Gregg Jaeger | Boston University (original) (raw)
Papers by Gregg Jaeger
Proceedings of SPIE, Dec 1, 2002
AIP Conference Proceedings, 2012
We study the entanglement of multipartite quantum states. Some lower bounds of the multipartite c... more We study the entanglement of multipartite quantum states. Some lower bounds of the multipartite concurrence are reviewed. We further present more effective lower bounds for detecting and qualifying entanglement, by establishing functional relations between the concurrence and the generalized partial transpositions of the multipartite systems.
Quantum Communication and Information Technologies, 2003
A pair of photons generated in the nonlinear process of spontaneous parametric down conversion is... more A pair of photons generated in the nonlinear process of spontaneous parametric down conversion is, in general, entangled so as to contain strong energy, time, polarization, and momentum quantum correlations. This entanglement involving more than one pair of quantum variable, known as hyper-entanglement entanglement, serves as a powerful tool in fundamental studies of foundations of the quantum theory, in the development of novel information processing techniques, and in the construction of new quantum measurement technologies, such as quantum ellipsometry.
Physical Review Letters, 2010
arXiv (Cornell University), Dec 10, 2015
Abner Shimony was an exceptional human being and a remarkably lucid and penetrating thinker whose... more Abner Shimony was an exceptional human being and a remarkably lucid and penetrating thinker whose work centered on some of the most significant physical and philosophical questions of his era at their nexus. He approached these questions with an open, agile and critical mind, something quickly evident to anyone who had the privilege of conversing with him. His choice of problems to pursue, which for the most part involved epistemology and the relationships between mind, matter and space-time, was visionary. His standards, brought continually to bear, were sterling. He was also a charitable man, with great concern for the well being of others, and was politically active, particularly in promoting international peace in the 1980s. The work of Abner Shimony was driven in no respect by fashion, but by curiousity coupled with a sense of intellectual urgency. He possessed a rarely found range of sophisticated tools necessary for attacking interdisciplinary questions in the foundations of the human conception of the world, arguably one of the few with such capacity since the time of Descartes. He also saw morality in intellectual endeavors as of prime significance, as evidenced in his view that the moral character of his friend John Bell was primarily responsible for his discovery of Bell's Theorem. This character was something the two friends shared, Shimony considering Bell one of the most rigorously honest thinkers of all time. 1 Shimony possessed a singular manner of speaking and of precise English usage finely tuned to his task, communicating ideas with the highest fidelity; one who had the privilege of hearing him speak or conversing
Non-locality, Communication, and Entanglement.- Einstein locality.- Bell locality.- Communication... more Non-locality, Communication, and Entanglement.- Einstein locality.- Bell locality.- Communication.- Non-locality.- Entanglement.- Causation, Imprecision, and Indefiniteness.- Probability.- Causation.- Indeterminacy.- Imprecision.- Indefiniteness.- Individuals, Parts, and Wholes.- Potentiality.- Discernibility.- Individuation.- Persistence.- Parts and wholes.
The conceptual and mathematical bases of quantum potentiality and chance Quantum potentiality, a ... more The conceptual and mathematical bases of quantum potentiality and chance Quantum potentiality, a notion by Werner Heisenberg in his definitive statement of the Copenhagen Interpretation of quantum mechanics, is closely associated with chance and probability. Heisenberg s introduction into modern physics of this notion, which it is associated with the Aristotelian tradition, represents a break with a long development in natural philosophy, and so raises a number of deeply intriguing questions regarding causation and chance in this realm, several of which I have been addressing recently. My lecture will lay out these questions and explore answers to them and their pertinence to explanation in physics.
The European Physical Journal Special Topics
arXiv: History and Philosophy of Physics, 2015
Abner Shimony was an exceptional human being and a remarkably lucid and penetrating thinker whose... more Abner Shimony was an exceptional human being and a remarkably lucid and penetrating thinker whose work centered on some of the most significant physical and philosophical questions of his era at their nexus. He approached these questions with an open, agile and critical mind, something quickly evident to anyone who had the privilege of conversing with him. His choice of problems to pursue, which for the most part involved epistemology and the relationships between mind, matter and space-time, was visionary. Undoubtedly, most of the discussions of Abner Shimony's work in future will center on his enormous contribution to the investigation of the significance to physics, both theoretical and experimental, of quantum entanglement, the characteristic of physical entities on which his work came to concentrate, well represented in the Clauser--Horne--Shimony--Holt inequality. Also significant for physics is his pioneering development of the quantification of entanglement in the early-...
Foundations of Physics, 2021
The operation of fundamental forces in quantum field theory is explicated here as the exchange of... more The operation of fundamental forces in quantum field theory is explicated here as the exchange of particles, consistently with the standard methodology of particle physics. The particles involved are seen to bear little relation to any classical particle but, rather, comprise unified collections of compresent, conserved quantities indicated by propagators. The exchange particles, which supervene upon quantum fields, are neither more fundamental than fields nor replace them as has often previously been assumed in models of exchange forces. It is argued that this explication of quantum field-theoretic exchange forces definitively improves upon its predecessors.
Quantum Science and Technology, 2016
Many of the applications covered in this book involve attempts to mitigate disturbances to an opt... more Many of the applications covered in this book involve attempts to mitigate disturbances to an optical signal. Such disturbances may come from the propagation medium (dispersion and turbulence), from the optical instruments being used (aberration) or from random noise in the light source or detectors. However, there are disturbances that are inherent to any quantum system, which can not be eliminated or reduced beyond a fundamental limit; these stem from the Heisenberg uncertainty relations and from the inability to distinguish non-orthogonal states.
Quantum Science and Technology, 2016
In this chapter, the study of optical orbital angular momentum (OAM) is introduced, a topic whose... more In this chapter, the study of optical orbital angular momentum (OAM) is introduced, a topic whose literature has grown rapidly since the early 1990s, as a result of both the intrinsic scientific interest of the subject and of the potential applications in areas ranging from high capacity quantum cryptography to the creation of optical spanners for the manipulation of nanostructures. It is be shown that the use of correlated photon methods leads to improved results and new applications in this area as well.
Quantum Science and Technology, 2016
In the following sections, we look at the use of correlated-photon methods for the cancelation of... more In the following sections, we look at the use of correlated-photon methods for the cancelation of distortive effects in optical systems. These effects usually appear in the form of unwanted phase-shifts that arise as the light passes through the system. These phase shifts come in several varieties. (i) If they are functions of frequency, then the resulting distortion occurs in the form of dispersion ; dispersion cancelation is discussed in Sect. 3.2. (ii) If the phases are time-independent functions of position, then the distortion is aberration or spatial dispersion . Aberrations commonly occur, as a result of the properties of the optical system itself, such as imperfections in a lens. Aberration is discussed in detail in Sect. 3.4. (iii) Finally, the unwanted phases may also occur as random functions of both position and time, as a result of turbulence. Discussion of turbulence is postponed until Sect. 6.4
Quantum Science and Technology, 2016
Quantum Science and Technology, 2016
Ghost imaging , also known as two-photon or correlated-photon imaging, was first demonstrated in ... more Ghost imaging , also known as two-photon or correlated-photon imaging, was first demonstrated in the 1990s and quickly gained widespread attention due to the fact that it exhibits a highly non-intuitive effect: an image can be formed by looking at correlations between two beams of light, neither of which is capable of forming an image by itself.
Quantum Science and Technology, 2016
Polarization mode dispersion (PMD) is a polarization-dependent variation of a material’s index of... more Polarization mode dispersion (PMD) is a polarization-dependent variation of a material’s index of refraction. It leads to time delays and wavenumber differences between orthogonal polarization states of light at fixed wavelength. Classically, several methods have been developed for measuring PMD [1, 2, 3, 4, 5, 6, 7, 8]. Many of these methods use interferometric measurements to determine optical delays. However, the accuracy of these approaches are limited by the stability of the interferometer, the signal-to-noise level of the detector, and by the need to keep track of the number of interference fringes.
Quantum Science and Technology, 2016
Interferometry using various portions of the electromagnetic spectrum has a long history, extendi... more Interferometry using various portions of the electromagnetic spectrum has a long history, extending back to the beginning of the nineteenth century in the optical case, and expanding far into other parts of the electromagnetic spectrum by the mid-twentieth century. During this time, interferometry has been used both as a probe for investigating the properties of light itself and as a practical tool for making high-precision measurements of other objects and phenomena. The applications range from measurement of lattice structures in solids and determination of stellar diameters to searches for gravity waves, a luminiferous ether, and extra space-time dimensions.
AIP Conf. Proc, 2005
Skip to main content. CERN Logo CERN Document Server. Related links. CDS; Indico; Library; Bullet... more Skip to main content. CERN Logo CERN Document Server. Related links. CDS; Indico; Library; Bulletin; EDMS. Main navigation links: Search; Submit; Help; Your CDS: Your alerts; Your baskets; Your searches. login. Home > Articles & Preprints > Published Articles > Entangled States in Quantum Key Distribution. Information; Discussion (0); Files. Article. Title, Entangled States in Quantum Key Distribution. Author(s), Jaeger, Gregg ; Sergienko, Alexander. In: AIP Conf. Proc. 810 (2005) pp.161-167. ...
Quantum Science and Technology, 2016
Proceedings of SPIE, Dec 1, 2002
AIP Conference Proceedings, 2012
We study the entanglement of multipartite quantum states. Some lower bounds of the multipartite c... more We study the entanglement of multipartite quantum states. Some lower bounds of the multipartite concurrence are reviewed. We further present more effective lower bounds for detecting and qualifying entanglement, by establishing functional relations between the concurrence and the generalized partial transpositions of the multipartite systems.
Quantum Communication and Information Technologies, 2003
A pair of photons generated in the nonlinear process of spontaneous parametric down conversion is... more A pair of photons generated in the nonlinear process of spontaneous parametric down conversion is, in general, entangled so as to contain strong energy, time, polarization, and momentum quantum correlations. This entanglement involving more than one pair of quantum variable, known as hyper-entanglement entanglement, serves as a powerful tool in fundamental studies of foundations of the quantum theory, in the development of novel information processing techniques, and in the construction of new quantum measurement technologies, such as quantum ellipsometry.
Physical Review Letters, 2010
arXiv (Cornell University), Dec 10, 2015
Abner Shimony was an exceptional human being and a remarkably lucid and penetrating thinker whose... more Abner Shimony was an exceptional human being and a remarkably lucid and penetrating thinker whose work centered on some of the most significant physical and philosophical questions of his era at their nexus. He approached these questions with an open, agile and critical mind, something quickly evident to anyone who had the privilege of conversing with him. His choice of problems to pursue, which for the most part involved epistemology and the relationships between mind, matter and space-time, was visionary. His standards, brought continually to bear, were sterling. He was also a charitable man, with great concern for the well being of others, and was politically active, particularly in promoting international peace in the 1980s. The work of Abner Shimony was driven in no respect by fashion, but by curiousity coupled with a sense of intellectual urgency. He possessed a rarely found range of sophisticated tools necessary for attacking interdisciplinary questions in the foundations of the human conception of the world, arguably one of the few with such capacity since the time of Descartes. He also saw morality in intellectual endeavors as of prime significance, as evidenced in his view that the moral character of his friend John Bell was primarily responsible for his discovery of Bell's Theorem. This character was something the two friends shared, Shimony considering Bell one of the most rigorously honest thinkers of all time. 1 Shimony possessed a singular manner of speaking and of precise English usage finely tuned to his task, communicating ideas with the highest fidelity; one who had the privilege of hearing him speak or conversing
Non-locality, Communication, and Entanglement.- Einstein locality.- Bell locality.- Communication... more Non-locality, Communication, and Entanglement.- Einstein locality.- Bell locality.- Communication.- Non-locality.- Entanglement.- Causation, Imprecision, and Indefiniteness.- Probability.- Causation.- Indeterminacy.- Imprecision.- Indefiniteness.- Individuals, Parts, and Wholes.- Potentiality.- Discernibility.- Individuation.- Persistence.- Parts and wholes.
The conceptual and mathematical bases of quantum potentiality and chance Quantum potentiality, a ... more The conceptual and mathematical bases of quantum potentiality and chance Quantum potentiality, a notion by Werner Heisenberg in his definitive statement of the Copenhagen Interpretation of quantum mechanics, is closely associated with chance and probability. Heisenberg s introduction into modern physics of this notion, which it is associated with the Aristotelian tradition, represents a break with a long development in natural philosophy, and so raises a number of deeply intriguing questions regarding causation and chance in this realm, several of which I have been addressing recently. My lecture will lay out these questions and explore answers to them and their pertinence to explanation in physics.
The European Physical Journal Special Topics
arXiv: History and Philosophy of Physics, 2015
Abner Shimony was an exceptional human being and a remarkably lucid and penetrating thinker whose... more Abner Shimony was an exceptional human being and a remarkably lucid and penetrating thinker whose work centered on some of the most significant physical and philosophical questions of his era at their nexus. He approached these questions with an open, agile and critical mind, something quickly evident to anyone who had the privilege of conversing with him. His choice of problems to pursue, which for the most part involved epistemology and the relationships between mind, matter and space-time, was visionary. Undoubtedly, most of the discussions of Abner Shimony's work in future will center on his enormous contribution to the investigation of the significance to physics, both theoretical and experimental, of quantum entanglement, the characteristic of physical entities on which his work came to concentrate, well represented in the Clauser--Horne--Shimony--Holt inequality. Also significant for physics is his pioneering development of the quantification of entanglement in the early-...
Foundations of Physics, 2021
The operation of fundamental forces in quantum field theory is explicated here as the exchange of... more The operation of fundamental forces in quantum field theory is explicated here as the exchange of particles, consistently with the standard methodology of particle physics. The particles involved are seen to bear little relation to any classical particle but, rather, comprise unified collections of compresent, conserved quantities indicated by propagators. The exchange particles, which supervene upon quantum fields, are neither more fundamental than fields nor replace them as has often previously been assumed in models of exchange forces. It is argued that this explication of quantum field-theoretic exchange forces definitively improves upon its predecessors.
Quantum Science and Technology, 2016
Many of the applications covered in this book involve attempts to mitigate disturbances to an opt... more Many of the applications covered in this book involve attempts to mitigate disturbances to an optical signal. Such disturbances may come from the propagation medium (dispersion and turbulence), from the optical instruments being used (aberration) or from random noise in the light source or detectors. However, there are disturbances that are inherent to any quantum system, which can not be eliminated or reduced beyond a fundamental limit; these stem from the Heisenberg uncertainty relations and from the inability to distinguish non-orthogonal states.
Quantum Science and Technology, 2016
In this chapter, the study of optical orbital angular momentum (OAM) is introduced, a topic whose... more In this chapter, the study of optical orbital angular momentum (OAM) is introduced, a topic whose literature has grown rapidly since the early 1990s, as a result of both the intrinsic scientific interest of the subject and of the potential applications in areas ranging from high capacity quantum cryptography to the creation of optical spanners for the manipulation of nanostructures. It is be shown that the use of correlated photon methods leads to improved results and new applications in this area as well.
Quantum Science and Technology, 2016
In the following sections, we look at the use of correlated-photon methods for the cancelation of... more In the following sections, we look at the use of correlated-photon methods for the cancelation of distortive effects in optical systems. These effects usually appear in the form of unwanted phase-shifts that arise as the light passes through the system. These phase shifts come in several varieties. (i) If they are functions of frequency, then the resulting distortion occurs in the form of dispersion ; dispersion cancelation is discussed in Sect. 3.2. (ii) If the phases are time-independent functions of position, then the distortion is aberration or spatial dispersion . Aberrations commonly occur, as a result of the properties of the optical system itself, such as imperfections in a lens. Aberration is discussed in detail in Sect. 3.4. (iii) Finally, the unwanted phases may also occur as random functions of both position and time, as a result of turbulence. Discussion of turbulence is postponed until Sect. 6.4
Quantum Science and Technology, 2016
Quantum Science and Technology, 2016
Ghost imaging , also known as two-photon or correlated-photon imaging, was first demonstrated in ... more Ghost imaging , also known as two-photon or correlated-photon imaging, was first demonstrated in the 1990s and quickly gained widespread attention due to the fact that it exhibits a highly non-intuitive effect: an image can be formed by looking at correlations between two beams of light, neither of which is capable of forming an image by itself.
Quantum Science and Technology, 2016
Polarization mode dispersion (PMD) is a polarization-dependent variation of a material’s index of... more Polarization mode dispersion (PMD) is a polarization-dependent variation of a material’s index of refraction. It leads to time delays and wavenumber differences between orthogonal polarization states of light at fixed wavelength. Classically, several methods have been developed for measuring PMD [1, 2, 3, 4, 5, 6, 7, 8]. Many of these methods use interferometric measurements to determine optical delays. However, the accuracy of these approaches are limited by the stability of the interferometer, the signal-to-noise level of the detector, and by the need to keep track of the number of interference fringes.
Quantum Science and Technology, 2016
Interferometry using various portions of the electromagnetic spectrum has a long history, extendi... more Interferometry using various portions of the electromagnetic spectrum has a long history, extending back to the beginning of the nineteenth century in the optical case, and expanding far into other parts of the electromagnetic spectrum by the mid-twentieth century. During this time, interferometry has been used both as a probe for investigating the properties of light itself and as a practical tool for making high-precision measurements of other objects and phenomena. The applications range from measurement of lattice structures in solids and determination of stellar diameters to searches for gravity waves, a luminiferous ether, and extra space-time dimensions.
AIP Conf. Proc, 2005
Skip to main content. CERN Logo CERN Document Server. Related links. CDS; Indico; Library; Bullet... more Skip to main content. CERN Logo CERN Document Server. Related links. CDS; Indico; Library; Bulletin; EDMS. Main navigation links: Search; Submit; Help; Your CDS: Your alerts; Your baskets; Your searches. login. Home > Articles & Preprints > Published Articles > Entangled States in Quantum Key Distribution. Information; Discussion (0); Files. Article. Title, Entangled States in Quantum Key Distribution. Author(s), Jaeger, Gregg ; Sergienko, Alexander. In: AIP Conf. Proc. 810 (2005) pp.161-167. ...
Quantum Science and Technology, 2016