N. Metwally | University of Bahrain (original) (raw)

Papers by N. Metwally

Quantum Information and Computation

In this manuscript, we show that it is possible to change the environment Markovianity/memory int... more In this manuscript, we show that it is possible to change the environment Markovianity/memory into non-Markovianity/memoryless, and vice versa. This idea is clarified by considering a system of a single two level quantum dot interacts locally with a magnetic field. The Markovianity of the environment depends on whether the coupling between the two systems is time dependent/independent and whether the systems suffering from damping or not. The amount of the lost/gained information and its scrambling depends on the energy gap spacing between the levels of the quantum dot, where the Skew information and the out-of-time ordered are used as quantifiers for both phenomena. Thermally, one can freeze the environment properties to be memory/ memoryless, where our results show the amount of exchanging information and its scrambling are constant as the temperature increases.

In this contribution, we investigated the possibility of teleporting classical/quantum masked inf... more In this contribution, we investigated the possibility of teleporting classical/quantum masked information, which may coded either in a single qubit or qutrit. For this purpose, different systems are used as quantum channels; two-qubit, three-qubit, two qutrit systems, and different protocols are applied. All the teleported masked information are retrieved as masked states at the receiver station. The number of operations that may be performed by the receiver are limited. It is shown that, one can teleport masked classical information with maximum fidelity, while for quantum information the maximization depends on the weight parameter of the tele-ported state. Teleporting the total masked state is better than teleporting its marginals, where the fidelity of total masked state is maximum. However, the fidelity of teleporting masking quantum information via three qubit systems may be maximized by controlling the weight of the initial masked state and the polarization of the mediator. I...

arXiv (Cornell University), Mar 9, 2018

We use a rectangular pulse to freeze the possibility of estimating the coherent parameters (θ, φ)... more We use a rectangular pulse to freeze the possibility of estimating the coherent parameters (θ, φ) of a single qubit and the encoded information. It is shown that, as the possibility of estimating the parameters increases, the amount of encoded information decreases. The pulse strength and the detuning between the qubit and the pulse have a different effect on the estimation degree and the encoded information. We show that if the weight parameter, θ is estimated, the encoded information depends on the initial state settings. Meanwhile, the encoded information doesn't depend on the estimated phase parameter,φ. These results may be useful in the context of quantum cryptography, teleportation and secure communication.

Dynamics of coded information over Bloch channels is investigated for different values of the cha... more Dynamics of coded information over Bloch channels is investigated for different values of the channel's parameters. We show that, the suppressing of the travelling coded information over Bloch channel can be increased by decreasing the equilibrium absolute value of information carrier and consequently decreasing the distilled information by eavesdropper. The amount of decoded information can be improved by increasing the equilibrium values of the two qubits and decreasing the ratio between longitudinal and transverse relaxation times. The robustness of coded information in maximum and partial entangled states is discussed. It is shown that the maximum entangled states are more robust than the partial entangled state over this type of channels.

of impurity, local and non-local information for two non

arXiv: Quantum Physics, 2016

The dynamics of Fisher information for an accelerated system initially prepared in the XXX-state ... more The dynamics of Fisher information for an accelerated system initially prepared in the XXX-state is discussed. An analytical solution, which consists of three parts: classical, the average over all pure states and a mixture of pure states is derived for the general state and for Werner state. It is shown that, the Unruh acceleration has a depleting effect on the Fisher information. This depletion depends on the degree of entanglement of the initial state settings. For the XXX-state, for some intervals of Unruh acceleration, the Fisher information remains constant, irrespective to the Unruh acceleration. In general, the possibility of estimating the state's parameters decreases as the acceleration increases. However, the precision of estimation can be maximized for certain values of the Unruh acceleration. We also investigate the contribution of the different parts of the Fisher information on the dynamics of the total Fisher information.

As an application of quantum information in Smart Cities, we introduce a technique to freeze the ... more As an application of quantum information in Smart Cities, we introduce a technique to freeze the accelerated information and consequently it is protected during the communication between the Smart Cities' users. It is assumed that, the two users share different dimension sizes of particles. The technique depends on local operations, where it is allowed that each particle interacts locally with a phase channel. We show that, the possibility of freezing the information of quantum channel between the users depends on the initial state setting parameters, and the initial acceleration parameter strength of the phase channel. It is shown that, one may increase the possibility of freezing the estimation degree of the parameters and consequently secure communication in the Smart Cities, if only the larger dimension system or both particles pass through the phase channel. Moreover, for small values of initial acceleration and large values of the channel strength, the size of the freezing...

A theoretical scheme is introduced to generate entangled network via Dzyaloshinskii-Moriya (DM)in... more A theoretical scheme is introduced to generate entangled network via Dzyaloshinskii-Moriya (DM)interaction. The dynamics of entanglement generated between different nodes by direct or indirect interaction is investigated. It is shown that, the direction of (DM) interaction and the location of the nodes have a sensational effect on the degree of entanglement. We quantify the minimum entanglement generated between all the nodes. The upper and lower bound of the entanglement of the generated network depends on the direction of DM interaction and the repetition of the behavior depends on the strength of DM. The generated entangled nodes are used as quantum channel to perform quantum teleportation, where we show that the fidelity of teleporting unknown information between the network members depends on the location of the members.

Quantum Information and Computation, 2021

The local and non local behavior of the accelerated Gisin state are investigated either before or... more The local and non local behavior of the accelerated Gisin state are investigated either before or after filtering process. It is shown that, the possibility of predicting the non-local behavior is forseen at large values of the weight of the Gisin and acceleration parameters. Due to the filtering process, the non-locality behavior of the Gisin state is predicted at small values of the weight parameter. The amount of non classical correlations are quantified by means of the local quantum uncertainty (LQU)and the concurrence, where the LQU is more sensitive to the non-locality than the concurrence. The phenomenon of the sudden changes is displayed for both quantifiers. Our results show that, the accelerated Gisin state could be used to mask information, where all the possible partitions of the masked state satisfy the masking criteria. Moreover, there is a set of states, which satisfy the masking condition, that is generated between each qubit and its masker qubit. For this set, the a...

The entangled behavior for different dimensional systems driven by classical external random fiel... more The entangled behavior for different dimensional systems driven by classical external random field are investigated. The amount of the survival entanglement between the components of each system is quantified. There are different behaviors of entanglement are come into view, as decay, sudden death, sudden birth and long-lived of entanglement. The maximum entangled states which can be generated from any of theses suggested systems are much fragile than the partially entangled ones. The larger dimensional systems are more robust than the smaller dimensional systems, where the entanglement decay smoothly, gradually and may vanishes for a very short time. For the class of 2times32\times 32times3 dimensional system, the one parameter family is more robust then the two parameters family class. Although the entanglement between systems of $ 2 \times 3$ dimensional is very sensitive to the classical external random field, one can generate long-lived entanglement.

We present an analytical expression for the response of a transient spectrum to a single-Cooper-p... more We present an analytical expression for the response of a transient spectrum to a single-Cooper-pair box biased by a classical voltage and irradiated by a single-mode quantized field. The exact solution of the model is obtained, by means of which we analyze the analytic form of the fluorescence spectrum using the transitions among the dressed states of the system. An interesting relation between the fluorescence spectrum and the dynamical evolution is found when the initial field states are prepared in binomial states.

Quantum Information Processing, 2013

The capacity of accelerated channel is investigated for different classes of initial states. It i... more The capacity of accelerated channel is investigated for different classes of initial states. It is shown that, the capacities of the travelling channels depend on the frame in which the accelerated channels are observed in and the initial shared state between the partners. In some frames, the capacities decay as the accelerations of both qubit increase. The decay rate is larger if the partners are initially share a maximum entangled state. The possibility of using the accelerated quantum channels to perform quantum coding protocol is discussed. The amount of decoded information is quantified for different cases, where it decays as the partner's accelerations increase to reach its minimum bound. This minimum bound depends on the initial shared states and it is large for maximum entangled state.

2019 8th International Conference on Modeling Simulation and Applied Optimization (ICMSAO), Apr 1, 2019

The Wigner function's behavior of accelerated and non-accelerated Greenberger-Horne-Zeilinger (GH... more The Wigner function's behavior of accelerated and non-accelerated Greenberger-Horne-Zeilinger (GHZ) state is discussed. For the non-accelerated GHZ state, the minimum/maximum peaks of the Wigner function depends on the distribution's angles, where they are displayed regularly at fixed values of the distribution's angles. We show that, for the accelerated GHZ state, the minimum bounds increases as the acceleration increases. The increasing rate depends on the number of accelerated qubits. Due to the positivity/ negativity behavior of the Wigner function, one can use it as an indicators of the presences of the classical/quantum correlations, respectively. The maximum bounds of the quantum and the classical correlations depend on the purity of the initial GHZ state. The classical correlation that depicted by the behavior of Wigner function independent of the acceleration, but depends on the degree of its purity.

Modern Physics Letters A

In this paper, the bidirectional steering between two accelerated partners sharing initially diff... more In this paper, the bidirectional steering between two accelerated partners sharing initially different classes of entangled states is discussed. Due to the decoherence, the steerability and its degree decrease either as the acceleration increases or the partners share initially a small amount of quantum correlations. The possibility of increasing the steerability is investigated by applying the filtering process. Our results show that by increasing the filtering strength, one can improve the upper bounds of the steerability and the range of acceleration at which the steerability is possible. Steering large coherent states is much better than steering less coherent ones.

To control the spread of a pandemic, preventive measures such as vaccination and social distancin... more To control the spread of a pandemic, preventive measures such as vaccination and social distancing are used. In this contribution a suggested model is discussed by using the game theory, where a payoff function is constructed in terms of the players’ available strategies. The relative cost of each strategy determines the most appropriate strategy for people to implement. In the absence of social distancing, vaccination is chosen when its cost equals the risk of infection for non-vaccinated individuals compared to vaccinated individuals. In the absence of vaccination, social distancing is chosen when its cost equals the risk of infection when social distancing is not applied. In the case of both vaccination and social distancing, the optimal strategy is to apply vaccination regardless of its cost. Through vaccination, it is possible to create a societal immunity capable of confronting the spread of COVID-19 throughout Bahrain.

Journal of Quantum Information Science, 2014

Dzyaloshiniskii-Moriya (DM) interaction in three directions (D x , D y and D z) is used to genera... more Dzyaloshiniskii-Moriya (DM) interaction in three directions (D x , D y and D z) is used to generate entangled network from partially entangled states in the presence of the spin-orbit coupling. The effect of the spin coupling on the entanglement between any two nodes of the network is investigated. The entanglement is quantified using Woottores concurrence method. It is shown that the entanglement decays as the coupling increases. For larger values of the spin coupling, the entanglement oscillates within finite bounds. For the initially entangled channels, the upper bound does not exceed its initial value, whereas the entanglement reaches its maximum value for the channels generated via indirect interaction.

Journal of Modern Optics, 2000

The state of an entangled q-bit pair is specified by 15 numerical parameters that are naturally r... more The state of an entangled q-bit pair is specified by 15 numerical parameters that are naturally regarded as the components of two 3-vectors and a 3 × 3-dyadic. There are easy-to-use criteria to check whether a given pair of 3-vectors plus a dyadic specify a 2-q-bit state; and if they do, whether the state is entangled; and if it is, whether it is a separable state. Some progress has been made in the search for analytical expressions for the degree of separability. We report, in particular, the answer in the case of vanishing 3-vectors.

Quantum Information Processing

The bidirectional steerability between different-size subsystems is discussed for a single parame... more The bidirectional steerability between different-size subsystems is discussed for a single parameter accelerated qubit-qutrit system. The decoherence due to the mixing and acceleration parameters is investigated, where for the total system and the qutrit, it increases as the mixing parameter increases, while it decreases for the qubit. The non-classical correlations are quantified by using the local quantum uncertainty, where it increases at large values of the acceleration parameter. The possibility that each subsystem steers each other is studied, where the behavior of the steering inequality predicts that the qubit has a large ability to steer the qutrit. The degree of steerability decays gradually when the qubit is accelerated. However, it decays suddenly when the qutrit or both subsystems are accelerated. The degree of steerability is shown for the qutrit/qubit vanishes at small/large values of the acceleration. The difference between the degrees of steerability depends on the initial state settings and the size of the accelerated subsystem.

The entanglement of atomic system consists of two atoms interacts with a deformed cavity mode is ... more The entanglement of atomic system consists of two atoms interacts with a deformed cavity mode is quantified by the means of Bloch vectors and the cross dyadic of the traveling state inside the cavity. For large value of the deformation the amplitude of Bloch vectors decrease very fast and consequently the traveling state turns into mixed state quickly. The generated entangled state is used as quantum channel to implement quantum teleportation protocol. It is shown that both of the deformed parameter and the number of photons inside the cavity play a central role on controlling the fidelity of the transmitted information.

The possibility of detracting the decoherence due to the acceleration process of the two-qutrit s... more The possibility of detracting the decoherence due to the acceleration process of the two-qutrit system is investigated, where we examined the behaviour of the relative entropy and the non-local information. For this purpose, the accelerated subsystems are allowed to pass through local or global noisy channels. It is shown that, the detraction potential depends on the type of the used noisy channel, local or global, and the initial settings of the accelerated qutrit systems, whether it is prepared in free or bound entangled intervals. The improving rate that depicted for systems prepared in the free entangled intervals is much better than those prepared in the bound entangled interval. The maximum bounds of the non-local information in the presence of the amplitude damping channels are larger than those passes in the dephasing channel.

Quantum Information and Computation

In this manuscript, we show that it is possible to change the environment Markovianity/memory int... more In this manuscript, we show that it is possible to change the environment Markovianity/memory into non-Markovianity/memoryless, and vice versa. This idea is clarified by considering a system of a single two level quantum dot interacts locally with a magnetic field. The Markovianity of the environment depends on whether the coupling between the two systems is time dependent/independent and whether the systems suffering from damping or not. The amount of the lost/gained information and its scrambling depends on the energy gap spacing between the levels of the quantum dot, where the Skew information and the out-of-time ordered are used as quantifiers for both phenomena. Thermally, one can freeze the environment properties to be memory/ memoryless, where our results show the amount of exchanging information and its scrambling are constant as the temperature increases.

In this contribution, we investigated the possibility of teleporting classical/quantum masked inf... more In this contribution, we investigated the possibility of teleporting classical/quantum masked information, which may coded either in a single qubit or qutrit. For this purpose, different systems are used as quantum channels; two-qubit, three-qubit, two qutrit systems, and different protocols are applied. All the teleported masked information are retrieved as masked states at the receiver station. The number of operations that may be performed by the receiver are limited. It is shown that, one can teleport masked classical information with maximum fidelity, while for quantum information the maximization depends on the weight parameter of the tele-ported state. Teleporting the total masked state is better than teleporting its marginals, where the fidelity of total masked state is maximum. However, the fidelity of teleporting masking quantum information via three qubit systems may be maximized by controlling the weight of the initial masked state and the polarization of the mediator. I...

arXiv (Cornell University), Mar 9, 2018

We use a rectangular pulse to freeze the possibility of estimating the coherent parameters (θ, φ)... more We use a rectangular pulse to freeze the possibility of estimating the coherent parameters (θ, φ) of a single qubit and the encoded information. It is shown that, as the possibility of estimating the parameters increases, the amount of encoded information decreases. The pulse strength and the detuning between the qubit and the pulse have a different effect on the estimation degree and the encoded information. We show that if the weight parameter, θ is estimated, the encoded information depends on the initial state settings. Meanwhile, the encoded information doesn't depend on the estimated phase parameter,φ. These results may be useful in the context of quantum cryptography, teleportation and secure communication.

Dynamics of coded information over Bloch channels is investigated for different values of the cha... more Dynamics of coded information over Bloch channels is investigated for different values of the channel's parameters. We show that, the suppressing of the travelling coded information over Bloch channel can be increased by decreasing the equilibrium absolute value of information carrier and consequently decreasing the distilled information by eavesdropper. The amount of decoded information can be improved by increasing the equilibrium values of the two qubits and decreasing the ratio between longitudinal and transverse relaxation times. The robustness of coded information in maximum and partial entangled states is discussed. It is shown that the maximum entangled states are more robust than the partial entangled state over this type of channels.

of impurity, local and non-local information for two non

arXiv: Quantum Physics, 2016

The dynamics of Fisher information for an accelerated system initially prepared in the XXX-state ... more The dynamics of Fisher information for an accelerated system initially prepared in the XXX-state is discussed. An analytical solution, which consists of three parts: classical, the average over all pure states and a mixture of pure states is derived for the general state and for Werner state. It is shown that, the Unruh acceleration has a depleting effect on the Fisher information. This depletion depends on the degree of entanglement of the initial state settings. For the XXX-state, for some intervals of Unruh acceleration, the Fisher information remains constant, irrespective to the Unruh acceleration. In general, the possibility of estimating the state's parameters decreases as the acceleration increases. However, the precision of estimation can be maximized for certain values of the Unruh acceleration. We also investigate the contribution of the different parts of the Fisher information on the dynamics of the total Fisher information.

As an application of quantum information in Smart Cities, we introduce a technique to freeze the ... more As an application of quantum information in Smart Cities, we introduce a technique to freeze the accelerated information and consequently it is protected during the communication between the Smart Cities' users. It is assumed that, the two users share different dimension sizes of particles. The technique depends on local operations, where it is allowed that each particle interacts locally with a phase channel. We show that, the possibility of freezing the information of quantum channel between the users depends on the initial state setting parameters, and the initial acceleration parameter strength of the phase channel. It is shown that, one may increase the possibility of freezing the estimation degree of the parameters and consequently secure communication in the Smart Cities, if only the larger dimension system or both particles pass through the phase channel. Moreover, for small values of initial acceleration and large values of the channel strength, the size of the freezing...

A theoretical scheme is introduced to generate entangled network via Dzyaloshinskii-Moriya (DM)in... more A theoretical scheme is introduced to generate entangled network via Dzyaloshinskii-Moriya (DM)interaction. The dynamics of entanglement generated between different nodes by direct or indirect interaction is investigated. It is shown that, the direction of (DM) interaction and the location of the nodes have a sensational effect on the degree of entanglement. We quantify the minimum entanglement generated between all the nodes. The upper and lower bound of the entanglement of the generated network depends on the direction of DM interaction and the repetition of the behavior depends on the strength of DM. The generated entangled nodes are used as quantum channel to perform quantum teleportation, where we show that the fidelity of teleporting unknown information between the network members depends on the location of the members.

Quantum Information and Computation, 2021

The local and non local behavior of the accelerated Gisin state are investigated either before or... more The local and non local behavior of the accelerated Gisin state are investigated either before or after filtering process. It is shown that, the possibility of predicting the non-local behavior is forseen at large values of the weight of the Gisin and acceleration parameters. Due to the filtering process, the non-locality behavior of the Gisin state is predicted at small values of the weight parameter. The amount of non classical correlations are quantified by means of the local quantum uncertainty (LQU)and the concurrence, where the LQU is more sensitive to the non-locality than the concurrence. The phenomenon of the sudden changes is displayed for both quantifiers. Our results show that, the accelerated Gisin state could be used to mask information, where all the possible partitions of the masked state satisfy the masking criteria. Moreover, there is a set of states, which satisfy the masking condition, that is generated between each qubit and its masker qubit. For this set, the a...

The entangled behavior for different dimensional systems driven by classical external random fiel... more The entangled behavior for different dimensional systems driven by classical external random field are investigated. The amount of the survival entanglement between the components of each system is quantified. There are different behaviors of entanglement are come into view, as decay, sudden death, sudden birth and long-lived of entanglement. The maximum entangled states which can be generated from any of theses suggested systems are much fragile than the partially entangled ones. The larger dimensional systems are more robust than the smaller dimensional systems, where the entanglement decay smoothly, gradually and may vanishes for a very short time. For the class of 2times32\times 32times3 dimensional system, the one parameter family is more robust then the two parameters family class. Although the entanglement between systems of $ 2 \times 3$ dimensional is very sensitive to the classical external random field, one can generate long-lived entanglement.

We present an analytical expression for the response of a transient spectrum to a single-Cooper-p... more We present an analytical expression for the response of a transient spectrum to a single-Cooper-pair box biased by a classical voltage and irradiated by a single-mode quantized field. The exact solution of the model is obtained, by means of which we analyze the analytic form of the fluorescence spectrum using the transitions among the dressed states of the system. An interesting relation between the fluorescence spectrum and the dynamical evolution is found when the initial field states are prepared in binomial states.

Quantum Information Processing, 2013

The capacity of accelerated channel is investigated for different classes of initial states. It i... more The capacity of accelerated channel is investigated for different classes of initial states. It is shown that, the capacities of the travelling channels depend on the frame in which the accelerated channels are observed in and the initial shared state between the partners. In some frames, the capacities decay as the accelerations of both qubit increase. The decay rate is larger if the partners are initially share a maximum entangled state. The possibility of using the accelerated quantum channels to perform quantum coding protocol is discussed. The amount of decoded information is quantified for different cases, where it decays as the partner's accelerations increase to reach its minimum bound. This minimum bound depends on the initial shared states and it is large for maximum entangled state.

2019 8th International Conference on Modeling Simulation and Applied Optimization (ICMSAO), Apr 1, 2019

The Wigner function's behavior of accelerated and non-accelerated Greenberger-Horne-Zeilinger (GH... more The Wigner function's behavior of accelerated and non-accelerated Greenberger-Horne-Zeilinger (GHZ) state is discussed. For the non-accelerated GHZ state, the minimum/maximum peaks of the Wigner function depends on the distribution's angles, where they are displayed regularly at fixed values of the distribution's angles. We show that, for the accelerated GHZ state, the minimum bounds increases as the acceleration increases. The increasing rate depends on the number of accelerated qubits. Due to the positivity/ negativity behavior of the Wigner function, one can use it as an indicators of the presences of the classical/quantum correlations, respectively. The maximum bounds of the quantum and the classical correlations depend on the purity of the initial GHZ state. The classical correlation that depicted by the behavior of Wigner function independent of the acceleration, but depends on the degree of its purity.

Modern Physics Letters A

In this paper, the bidirectional steering between two accelerated partners sharing initially diff... more In this paper, the bidirectional steering between two accelerated partners sharing initially different classes of entangled states is discussed. Due to the decoherence, the steerability and its degree decrease either as the acceleration increases or the partners share initially a small amount of quantum correlations. The possibility of increasing the steerability is investigated by applying the filtering process. Our results show that by increasing the filtering strength, one can improve the upper bounds of the steerability and the range of acceleration at which the steerability is possible. Steering large coherent states is much better than steering less coherent ones.

To control the spread of a pandemic, preventive measures such as vaccination and social distancin... more To control the spread of a pandemic, preventive measures such as vaccination and social distancing are used. In this contribution a suggested model is discussed by using the game theory, where a payoff function is constructed in terms of the players’ available strategies. The relative cost of each strategy determines the most appropriate strategy for people to implement. In the absence of social distancing, vaccination is chosen when its cost equals the risk of infection for non-vaccinated individuals compared to vaccinated individuals. In the absence of vaccination, social distancing is chosen when its cost equals the risk of infection when social distancing is not applied. In the case of both vaccination and social distancing, the optimal strategy is to apply vaccination regardless of its cost. Through vaccination, it is possible to create a societal immunity capable of confronting the spread of COVID-19 throughout Bahrain.

Journal of Quantum Information Science, 2014

Dzyaloshiniskii-Moriya (DM) interaction in three directions (D x , D y and D z) is used to genera... more Dzyaloshiniskii-Moriya (DM) interaction in three directions (D x , D y and D z) is used to generate entangled network from partially entangled states in the presence of the spin-orbit coupling. The effect of the spin coupling on the entanglement between any two nodes of the network is investigated. The entanglement is quantified using Woottores concurrence method. It is shown that the entanglement decays as the coupling increases. For larger values of the spin coupling, the entanglement oscillates within finite bounds. For the initially entangled channels, the upper bound does not exceed its initial value, whereas the entanglement reaches its maximum value for the channels generated via indirect interaction.

Journal of Modern Optics, 2000

The state of an entangled q-bit pair is specified by 15 numerical parameters that are naturally r... more The state of an entangled q-bit pair is specified by 15 numerical parameters that are naturally regarded as the components of two 3-vectors and a 3 × 3-dyadic. There are easy-to-use criteria to check whether a given pair of 3-vectors plus a dyadic specify a 2-q-bit state; and if they do, whether the state is entangled; and if it is, whether it is a separable state. Some progress has been made in the search for analytical expressions for the degree of separability. We report, in particular, the answer in the case of vanishing 3-vectors.

Quantum Information Processing

The bidirectional steerability between different-size subsystems is discussed for a single parame... more The bidirectional steerability between different-size subsystems is discussed for a single parameter accelerated qubit-qutrit system. The decoherence due to the mixing and acceleration parameters is investigated, where for the total system and the qutrit, it increases as the mixing parameter increases, while it decreases for the qubit. The non-classical correlations are quantified by using the local quantum uncertainty, where it increases at large values of the acceleration parameter. The possibility that each subsystem steers each other is studied, where the behavior of the steering inequality predicts that the qubit has a large ability to steer the qutrit. The degree of steerability decays gradually when the qubit is accelerated. However, it decays suddenly when the qutrit or both subsystems are accelerated. The degree of steerability is shown for the qutrit/qubit vanishes at small/large values of the acceleration. The difference between the degrees of steerability depends on the initial state settings and the size of the accelerated subsystem.

The entanglement of atomic system consists of two atoms interacts with a deformed cavity mode is ... more The entanglement of atomic system consists of two atoms interacts with a deformed cavity mode is quantified by the means of Bloch vectors and the cross dyadic of the traveling state inside the cavity. For large value of the deformation the amplitude of Bloch vectors decrease very fast and consequently the traveling state turns into mixed state quickly. The generated entangled state is used as quantum channel to implement quantum teleportation protocol. It is shown that both of the deformed parameter and the number of photons inside the cavity play a central role on controlling the fidelity of the transmitted information.

The possibility of detracting the decoherence due to the acceleration process of the two-qutrit s... more The possibility of detracting the decoherence due to the acceleration process of the two-qutrit system is investigated, where we examined the behaviour of the relative entropy and the non-local information. For this purpose, the accelerated subsystems are allowed to pass through local or global noisy channels. It is shown that, the detraction potential depends on the type of the used noisy channel, local or global, and the initial settings of the accelerated qutrit systems, whether it is prepared in free or bound entangled intervals. The improving rate that depicted for systems prepared in the free entangled intervals is much better than those prepared in the bound entangled interval. The maximum bounds of the non-local information in the presence of the amplitude damping channels are larger than those passes in the dephasing channel.