The Experts below are selected from a list of 160878 Experts worldwide ranked by ideXlab platform
Philippe Grangier - One of the best experts on this subject based on the ideXlab platform.
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the first Single Photon sources and Single Photon interference experiments
2019Co-Authors: Alain Aspect, Philippe GrangierAbstract:This chapter shows how the concept of Single-Photon sources has emerged, in the mid 1980s. We emphasize the difference between “Single-Photon wave-packets” and attenuated classical light pulses or light beams. The quantum behavior of Single Photons—they cannot yield more than one photodetection—is contrasted with the behavior of attenuated classical light, which always yields some possibility of a joint detection on both sides of a beam splitter. We describe the Single-Photon source that we developed in the mid 1980s at Institut d’Optique, as well as the quantitative criterion (“anticorrelation”) that we introduced to show that it was indeed a Single-Photon source. We contrast these results with the ones that we obtained with a source of classical light pulses produced by a strongly attenuated light emitting diode, in which the average number of Photons per pulse was much less than 1. We also describe the interference experiment we carried out with our Single-Photon source, illustrating the notion of wave-particle duality. We conclude with a brief overview of further developments in sources of Single-Photons, heralded or on-demand, as well as in wave-particle duality experiments, in particular Wheeler’s delayed choice experiments.
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Single Photon quantum cryptography
Physical Review Letters, 2002Co-Authors: Alexios Beveratos, Rosa Brouri, Jean Philippe Poizat, Andre Villing, Thierry Gacoin, Philippe GrangierAbstract:We report the full implementation of a quantum cryptography protocol using a stream of Single Photon pulses generated by a stable and efficient source operating at room temperature. The Single Photon pulses are emitted on demand by a Single nitrogen-vacancy color center in a diamond nanocrystal. The quantum bit error rate is less that $4.6%$ and the secure bit rate is $7700\text{ }\mathrm{\text{bits}}/\mathrm{s}$. The overall performances of our system reaches a domain where Single Photons have a measurable advantage over an equivalent system based on attenuated light pulses.
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Single Photon quantum cryptography.
Physical review letters, 2002Co-Authors: Alexios Beveratos, Rosa Brouri, Jean Philippe Poizat, Andre Villing, Thierry Gacoin, Philippe GrangierAbstract:We report the full implementation of a quantum cryptography protocol using a stream of Single Photon pulses generated by a stable and efficient source operating at room temperature. The Single Photon pulses are emitted on demand by a Single nitrogen-vacancy color center in a diamond nanocrystal. The quantum bit error rate is less that 4.6% and the secure bit rate is 7700 bits/s. The overall performances of our system reaches a domain where Single Photons have a measurable advantage over an equivalent system based on attenuated light pulses.
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a box for a Single Photon
Nature, 1999Co-Authors: Philippe GrangierAbstract:A Single Photon is an elusive object, and it used to be impossible to detect Photons without destroying them. A quantum non-demolition experiment now shows how to store a Single Photon, and more importantly how to watch it repeatedly.
Robert Henry Hadfield - One of the best experts on this subject based on the ideXlab platform.
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Single-Photon detectors for optical quantum information applications
Nature Photonics, 2009Co-Authors: Robert Henry HadfieldAbstract:The past decade has seen a dramatic increase in interest in new Single-Photon detector technologies. A major cause of this trend has undoubtedly been the push towards optical quantum information applications such as quantum key distribution. These new applications place extreme demands on detector performance that go beyond the capabilities of established Single-Photon detectors. There has been considerable effort to improve conventional Photon-counting detectors and to transform new device concepts into workable technologies for optical quantum information applications. This Review aims to highlight the significant recent progress made in improving Single-Photon detector technologies, and the impact that these developments will have on quantum optics and quantum information science.
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Single-Photon source characterization with twin infrared-sensitive superconducting Single-Photon detectors
Journal of Applied Physics, 2007Co-Authors: Robert Henry Hadfield, Martin J. Stevens, Richard P. MirinAbstract:We report on the high fidelity characterization, via spontaneous emission lifetime and g(2)(τ) measurements, of a cavity-coupled quantum dot Single-Photon source at 902nm using a pair of nanowire-based superconducting Single-Photon detectors (SSPDs). We analyze the suitability of the twin SSPD scheme reported here for the characterization of Single-Photon sources at telecommunications wavelengths (1310 and 1550nm).
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Single Photon source characterization with a superconducting Single Photon detector
Optics express, 2006Co-Authors: Robert Henry Hadfield, Robert E. Schwall, Martin J. Stevens, Steven S. Gruber, Aaron J. Miller, Richard P. MirinAbstract:We present the first use of a superconducting Single Photon detector in characterizing a Single Photon source. This detector offers excellent timing resolution (65 ps FWHM jitter) and operation into the infrared (1550 nm).
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Time-correlated Single-Photon counting with superconducting Single-Photon detectors
Advanced Photon Counting Techniques, 2006Co-Authors: Martin J. Stevens, Robert E. Schwall, Sae Woo Nam, Robert Henry Hadfield, Richard P. MirinAbstract:We report use of a niobium nitride superconducting Single-Photon detector in a time-correlated Single-Photon counting experiment. The detector has a timing jitter of 68 ± 3 ps full width at half maximum with a Gaussian temporal profile. The detector's dark count rate and detection efficiency can be tuned by adjusting the bias current applied to the device. Typical values include a detection efficiency of [similar to] 1-2% and a dark count rate below 100 Hz. We use this detector to measure time-resolved photoluminescence at wavelengths up to 1650 nm, well beyond the range of conventional silicon detectors. We also use this superconducting detector to measure the emission of a quantum dot Single-Photon source.
Richard P. Mirin - One of the best experts on this subject based on the ideXlab platform.
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Progress toward a high-resolution Single-Photon camera based on superconducting Single Photon detector arrays and compressive sensing
2015 Conference on Lasers and Electro-Optics (CLEO), 2015Co-Authors: Thomas Gerrits, Shane Allman, Varun Verma, John Howell, Richard P. MirinAbstract:We present our results on utilizing an SNSPD array and compressive imaging techniques to perform Single Photon imaging and present our progress toward a high-resolution Single-Photon camera for the mid-IR.
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Single-Photon and Photon-Number-Resolving Detectors
IEEE Photonics Journal, 2012Co-Authors: Richard P. Mirin, M. A. ItzlerAbstract:Several important advances were reported in Single-Photon detectors and Photon-number-resolving detectors in 2011. New materials with smaller superconducting gaps were demonstrated for superconducting nanowire Single-Photon detectors (SNSPDs) that led to improved signal-to-noise ratios and infrared performance. Faster superconducting transition edge sensors (TESs) were demonstrated by using normal metal heat sinks. Both TESs and SNSPDs were evanescently coupled with waveguides as a step toward demonstrating quantum Photonic integrated circuits. Photon-number resolution has been the goal in several demonstrations using semiconductor detectors, and recent results suggest a potential convergence of Geiger-mode and linear-mode avalanche diodes in exhibiting the high-gain, low-noise analog behavior necessary to reach this goal. There has also been progress focused on additional trends in Single-Photon avalanche diodes (SPADs) for high- rate counting and detector array scaling.
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Single-Photon source characterization with twin infrared-sensitive superconducting Single-Photon detectors
Journal of Applied Physics, 2007Co-Authors: Robert Henry Hadfield, Martin J. Stevens, Richard P. MirinAbstract:We report on the high fidelity characterization, via spontaneous emission lifetime and g(2)(τ) measurements, of a cavity-coupled quantum dot Single-Photon source at 902nm using a pair of nanowire-based superconducting Single-Photon detectors (SSPDs). We analyze the suitability of the twin SSPD scheme reported here for the characterization of Single-Photon sources at telecommunications wavelengths (1310 and 1550nm).
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Single Photon source characterization with a superconducting Single Photon detector
Optics express, 2006Co-Authors: Robert Henry Hadfield, Robert E. Schwall, Martin J. Stevens, Steven S. Gruber, Aaron J. Miller, Richard P. MirinAbstract:We present the first use of a superconducting Single Photon detector in characterizing a Single Photon source. This detector offers excellent timing resolution (65 ps FWHM jitter) and operation into the infrared (1550 nm).
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Time-correlated Single-Photon counting with superconducting Single-Photon detectors
Advanced Photon Counting Techniques, 2006Co-Authors: Martin J. Stevens, Robert E. Schwall, Sae Woo Nam, Robert Henry Hadfield, Richard P. MirinAbstract:We report use of a niobium nitride superconducting Single-Photon detector in a time-correlated Single-Photon counting experiment. The detector has a timing jitter of 68 ± 3 ps full width at half maximum with a Gaussian temporal profile. The detector's dark count rate and detection efficiency can be tuned by adjusting the bias current applied to the device. Typical values include a detection efficiency of [similar to] 1-2% and a dark count rate below 100 Hz. We use this detector to measure time-resolved photoluminescence at wavelengths up to 1650 nm, well beyond the range of conventional silicon detectors. We also use this superconducting detector to measure the emission of a quantum dot Single-Photon source.
Jung-tsung Shen - One of the best experts on this subject based on the ideXlab platform.
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Efficient Single-Photon frequency conversion using a sagnac interferometer
Physical Review Letters, 2012Co-Authors: Matthew Bradford, Kenechukwu C. Obi, Jung-tsung ShenAbstract:We propose a scheme for efficient optical frequency conversion at the Single-Photon power level. The scheme exploits the quantum interference of Single-Photon states at a three-level quantum emitter coupled to a Sagnac interferometer. We show that this device can achieve Single-Photon frequency up- or down-conversion with near unity efficiency.
Milos Toth - One of the best experts on this subject based on the ideXlab platform.
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solid state Single Photon emitters
Nature Photonics, 2016Co-Authors: Igor Aharonovich, Dirk Englund, Milos TothAbstract:This Review summarizes recent progress of Single-Photon emitters based on defects in solids and highlights new research directions. The photophysical properties of Single-Photon emitters and efforts towards scalable system integration are also discussed.
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Solid-state Single-Photon emitters
Nature Photonics, 2016Co-Authors: Igor Aharonovich, Dirk Englund, Milos TothAbstract:Single-Photon emitters play an important role in many leading quantum technologies. There is still no ‘ideal’ on-demand Single- Photon emitter, but a plethora of promising material systems have been developed, and several have transitioned from proof-of- concept to engineering efforts with steadily improving performance. Here, we review recent progress in the race towards true Single-Photon emitters required for a range of quantum information processing applications. We focus on solid-state systems including quantum dots, defects in solids, two-dimensional hosts and carbon nanotubes, as these are well positioned to benefit from recent breakthroughs in nanofabrication and materials growth techniques. We consider the main challenges and key advan- tages of each platform, with a focus on scalable on-chip integration and fabrication of identical sources on Photonic circuits.