Quantum Integrated Photonics (original) (raw)
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IEEE Journal of Selected Topics in Quantum Electronics, 2000
This paper reviews recent advances in integrated waveguide circuits, lithographically fabricated for quantum optics. With the increase in complexity of realizable quantum architectures, the need for stability and high quality nonclassical interference within large optical circuits has become a matter of concern in modern quantum optics. Using integrated waveguide structures, we demonstrate a high performance platform from which to further develop quantum technologies and experimental quantum physics using single photons. We review the performance of directional couplers in Hong-Ou-Mandel experiments, together with inherently stable interferometers with controlled phase shifts for quantum state preparation, manipulation, and measurement as well as demonstrating the first on-chip quantum metrology experiments. These fundamental components of optical quantum circuits are used together to construct integrated linear optical realizations of two-photon quantum controlled logic gates. The high quality quantum mechanical performance observed at the single photon level signifies their central role in future optical quantum technologies.
Guest Editorial Integrated Photonics for Quantum Applications
Journal of Lightwave Technology
Guest Editorial Integrated Photonics for Quantum Applications A S GUEST Editors, we are pleased to introduce this Special Issue of the Journal of Lightwave Technology (JLT) on Integrated Photonics for Quantum Applications. This JLT Special Issue covers topics in the field of integrated photonics for emerging quantum applications such as communications, computing, networking, and sensing and aims to provide a global audience with the newest developments in these rapidly evolving fields. Integrated photonics such as fiber or integrated photonic waveguides, quantum light sources, detectors, and others are considered key to miniaturize bulky bench-top experiments down to chip-level and integrate them into larger systems, achieving essential improvements in performance and practical deployment for the various quantum applications. With this first Special Issue of JLT on this topic, we are delighted to have captured the latest state of the art of Integrated Photonics for Quantum Applications, bringing closer two communities that can greatly benefit from each other: the classical optical communications and the quantum. This Special Issue hosts 17 papers, including two invited papers and three tutorial papers. The papers cover several hot topics in integrated photonics for quantum applications, among which, the following are particularly worthy of mention: integrated quantum key distribution and quantum random noise generation photonic technologies, on-chip quantum communication devices, nonlinear quantum photonics with AlGaAs Bragg-reflection waveguides, diamond integrated quantum nanophotonics, and superconducting singlephoton and photon-number resolving detectors. We take advantage of this Editorial to thank all those who have made the publication of this Special Issue possible: all the esteemed authors of the several submitted papers, the voluntary expert reviewers, and the editorial team at JLT. We believe this Special Issue will captivate the readers that are already experts in the field of integrated quantum photonics, as well as stimulate the interest of newcomers in using the potential of photonics to the benefit of several quantum applications.
Integrated quantum photonics: State of the Art & Perspectives
HAL (Le Centre pour la Communication Scientifique Directe), 2022
BROUILLON : In this paper, we discuss recent progress toward the development of integrated quantum photonic technologies and discuss current challenges and future directions. This Perspective paper describes state-of-the-art experiments, and highlights the potential of such devices for quantum technologies. This article outlines a selection of current and emerging directions in integrated quantum photonics research. It aims at providing a pedagogical and forward-looking introduction for researchers new to the field and a road map of open challenges and future directions that may appeal to those established in the area.
Topics in Applied Physics, 2016
Silicon integrated quantum photonics has recently emerged as a promising approach to realising complex and compact quantum circuits, where entangled states of light are generated and manipulated on-chip to realise applications in sensing, communication and computation. Recent highlights include chip-to-chip quantum communications, programmable quantum circuits, chip-based quantum simulations and routes to scalable quantum information processing.
Integrated photonics has enabled much progress towards quantum technologies. However, many applications, e.g. quantum communication, sensing, and distributed and cloud quantum computing, require coherent photonic interconnection between separate sub-systems, with high-fidelity distribution and manipulation of entanglement between multiple devices being one of the most stringent requirements of the interconnected system. Coherently interconnecting separate chips is challenging due to the fragility of these quantum states and the demanding challenges of transmitting photons in at least two media within a single coherent system. Here, we report a quantum photonic interconnect demonstrating high-fidelity entanglement distribution and manipulation between two separate chips, implemented using state-of-the-art silicon photonics. Entangled states are generated and manipulated on-chip, and distributed between the chips by interconverting between path-encoding and polarisation-encoding. We u...
Electronic-photonic integrated circuits on the CMOS platform
Silicon Photonics, 2006
The optical components industry stands at the threshold of a major expansion that will restructure its business processes and sustain its profitability for the next three decades. This growth will establish a cost effective platform for the partitioning of electronic and photonic functionality to extend the processing power of integrated circuits. BAE Systems, Lucent Technologies, Massachusetts Institute of Technology, and Applied Wave Research are participating in a high payoff research and development program for the Microsystems Technology Office (MTO) of DARPA. The goal of the program is the development of technologies and design tools necessary to fabricate an application-specific, electronicphotonic integrated circuit (AS-EPIC). As part of the development of this demonstration platform we are exploring selected functions normally associated with the front end of mixed signal receivers such as modulation, detection, and filtering. The chip will be fabricated in the BAE Systems CMOS foundry and at MIT's Microphotonics Center. We will present the latest results on the performance of multi-layer deposited High Index Contrast Waveguides, CMOS compatible modulators and detectors, and optical filter slices. These advances will be discussed in the context of the Communications Technology Roadmap that was recently released by the MIT Microphotonics Center Industry Consortium.
Integrated Photonics Research and Applications/Nanophotonics for Information Systems, 2005
The integration scale in Photonic Integrated Circuits will be pushed to VLSI-level in the coming decade. Key technologies for reduction of device dimensions are high resolution lithography and deep waveguide etching technology. In this paper developments in Photonic Integration are reviewed and the limits for reduction of device dimensions are discussed.
New Optical Chip for Quantum Computer
2015
Now, researchers from the University of Bristol in the UK and Nippon Telegraph and Telephone (NTT) in Japan, have pulled off the same feat for light in the quantum world by developing an optical chip that can process photons in an infinite number of ways. [7] While physicists are continually looking for ways to unify the theory of relativity, which describes large-scale phenomena, with quantum theory, which describes small-scale phenomena, computer scientists are searching for technologies to build the quantum computer. The accelerating electrons explain not only the Maxwell Equations and the Special Relativity, but the Heisenberg Uncertainty Relation, the Wave-Particle Duality and the electron's spin also, building the Bridge between the Classical and Quantum Theories. The Planck Distribution Law of the electromagnetic oscillators explains the electron/proton mass rate and the Weak and Strong Interactions by the diffraction patterns. The Weak Interaction changes the diffraction patterns by moving the electric charge from one side to the other side of the diffraction pattern, which violates the CP and Time reversal symmetry. The diffraction patterns and the locality of the self-maintaining electromagnetic potential explains also the Quantum Entanglement, giving it as a natural part of the Relativistic Quantum Theory and making possible to build the Quantum Computer.