The Experts below are selected from a list of 54570 Experts worldwide ranked by ideXlab platform
Hong Guo - One of the best experts on this subject based on the ideXlab platform.
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6 gbps real time optical quantum random Number Generator based on vacuum fluctuation
Review of Scientific Instruments, 2019Co-Authors: Ziyong Zheng, Yichen Zhang, Weinan Huang, Hong GuoAbstract:We demonstrate a 6 Gbps real-time optical quantum random Number Generator by measuring vacuum fluctuation. To address the common problem that speed gap exists between fast randomness generation and slow randomness extraction in most high-speed real-time quantum random Number Generator systems, we present an optimized extraction algorithm based on parallel implementation of Toeplitz hashing to reduce the influence of classical noise due to the imperfection of devices. Notably, the real-time rate of randomness extraction we have achieved reaches the highest speed of 12 Gbps by occupying less computing resources, and the algorithm has the ability to support hundreds of Gbps randomness extraction. By assuming that the eavesdropper with complete knowledge of the classical noise, our Generator has a randomness generation speed of 6.83 Gbps and this supports the generation of 6 Gbps information-theoretically provable quantum random Numbers, which are output in real-time through peripheral component interconnect express interface.
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experimental implementation of bias free quantum random Number Generator based on vacuum fluctuation
International Conference on Photonics Optics and Laser Technology, 2019Co-Authors: Ziyong Zheng, Yichen Zhang, Hong GuoAbstract:We experimentally demonstrate a bias-free optical quantum random Number Generator with real-time randomness extraction to directly output uniform distributed random Numbers by measuring the vacuum fluctuation of quantum state. A phase modulator is utilized in the scheme to effectively reduce the influence of deviations between two arms of the Generator caused by the imperfect practical devices, which is an innovative solution in the field of quantum random Number Generator. In the case where the feedback modulation frequency is much faster than the phase jitter, an unbiased result can be obtained by an additional subtraction between the compensation signal and its average value to eliminate residual deviation. A following randomness extractor is applied to eliminate the influence of residual side information introduced by the imperfect devices in practical system.
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bias free true random Number Generator
Optics Letters, 2009Co-Authors: Wei Wei, Hong GuoAbstract:We propose what we believe to be a new approach to nondeterministic random-Number generation. The randomness originated from the uncorrelated nature of consecutive laser pulses with Poissonian photon statistics and that of photon Number detections is used to generate random bit, and the von Neumann correction method is used to extract the final random bit. This method is proved to be bias free in randomness generation, provided that the single photon detections are mutually independent. Further, it has the advantage in fast random bit generation, since no postprocessing is needed. A true random-Number Generator based on this method is realized, and its randomness is tested and guaranteed using three statistical test batteries.
A J Shields - One of the best experts on this subject based on the ideXlab platform.
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simple source device independent continuous variable quantum random Number Generator
Physical Review A, 2019Co-Authors: P R Smith, D G Marangon, Marco Lucamarini, Zhiliang Yuan, A J ShieldsAbstract:Phase-randomized optical homodyne detection is a well-known technique for performing quantum state tomography. So far, it has been mainly considered a sophisticated tool for laboratory experiments but unsuitable for practical applications. In this work, we change the perspective and employ this technique to set up a practical continuous-variable quantum random Number Generator. We exploit a phase-randomized local oscillator realized with a gain-switched laser to bound the min-entropy and extract true randomness from a completely uncharacterized input, potentially controlled by a malicious adversary. Our proof-of-principle implementation achieves an equivalent rate of 270 Mbit/s. In contrast to other source-device-independent quantum random Number Generators, the one presented herein does not require additional active optical components, thus representing a viable solution for future compact, modulator-free, certified Generators of randomness.
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a high speed post processing free quantum random Number Generator
arXiv: Quantum Physics, 2008Co-Authors: J F Dynes, Z L Yuan, A W Sharpe, A J ShieldsAbstract:A quantum random Number Generator (QRNG) based on gated single photon detection of an InGaAs photodiode at GHz frequency is demonstrated. Owing to the extremely long coherence time of each photon, each photons' wavefuntion extends over many gating cycles of the photodiode. The collapse of the photon wavefunction on random gating cycles as well as photon random arrival time detection events are used to generate sequences of random bits at a rate of 4.01 megabits/s. Importantly, the random outputs are intrinsically bias-free and require no post-processing procedure to pass random Number statistical tests, making this QRNG an extremely simple device.
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a high speed postprocessing free quantum random Number Generator
Applied Physics Letters, 2008Co-Authors: J F Dynes, Z L Yuan, A W Sharpe, A J ShieldsAbstract:A quantum random Number Generator (QRNG) based on gated single photon detection of an In–GaAs photodiode at gigahertz frequency is demonstrated. Owing to the extremely long coherence time of each photon, each photons’ wave function extends over many gating cycles of the photodiode. The collapse of the photon wave function on random gating cycles as well as photon random arrival time detection events are used to generate sequences of random bits at a rate of 4.01Mbit∕s. Importantly, the random outputs are intrinsically biasfree and require no postprocessing procedure to pass random Number statistical tests, making this QRNG an extremely simple device.
Guo Hong - One of the best experts on this subject based on the ideXlab platform.
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Bias-free source-independent quantum random Number Generator
'The Optical Society', 2020Co-Authors: Zheng Ziyong, Yu Song, Zhang Yi-che, Mi Huang, Che Ziyang, Guo HongAbstract:A bias-free source-independent quantum random Number Generator scheme based on the measurement of vacuum fluctuation is proposed to realize the effective elimination of system bias and common mode noise introduced by the local oscillator. Optimal parameter settings are derived to avoid the system recording two canonically conjugate quadratures simultaneously in each measurement. In particular, it provides a new approach to investigate the performance difference between measuring two quadratures of equal and unequal intensity. It is experimentally demonstrated that the system supports 4.2 Gbps bias-free source-independent random Number generation, where its common mode rejection ratio reaches 61.17 dB. Furthermore, the scheme offers an all-optical method facilitating the integration of source-independent quantum random Number Generators into compact chips.Comment: 8 pages, 6 figure
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6 Gbps real-time optical quantum random Number Generator based on vacuum fluctuation
'AIP Publishing', 2019Co-Authors: Zheng Ziyong, Yu Song, Zhang Yi-che, Huang Weina, Guo HongAbstract:We demonstrate a 6 Gbps real-time optical quantum random Number Generator by measuring vacuum fluctuation. To address the common problem that speed gap exists between fast randomness generation and slow randomness extraction in most high-speed real-time quantum random Number Generator systems, we present an optimized extraction algorithm based on parallel implementation of Toeplitz hashing to reduce the influence of classical noise due to the imperfection of devices. Notably, the real-time rate of randomness extraction we have achieved reaches the highest speed of 12 Gbps by occupying less computing resources and the algorithm has the ability to support hundreds of Gbps randomness extraction. By assuming that the eavesdropper with complete knowledge of the classical noise, our Generator has a randomness generation speed of 6.83 Gbps and this supports the generation of 6 Gbps information-theoretically provable quantum random Numbers, which are output in real-time through peripheral component interconnect express interface.Comment: 8 pages,9 figure
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Experimental implementation of bias-free quantum random Number Generator based on vacuum fluctuation
2019Co-Authors: Zheng Ziyong, Zhang Yi-chen, Yu Song, Guo HongAbstract:We experimentally demonstrate a bias-free optical quantum random Number Generator with real-time randomness extraction to directly output uniform distributed random Numbers by measuring the vacuum fluctuation of quantum state. A phase modulator is utilized in the scheme to effectively reduce the influence of deviations between two arms of the Generator caused by the imperfect practical devices, which is an innovative solution in the field of quantum random Number Generator. In the case where the feedback modulation frequency is much faster than the phase jitter, an unbiased result can be obtained by an additional subtraction between the compensation signal and its average value to eliminate residual deviation. A following randomness extractor is applied to eliminate the influence of residual side information introduced by the imperfect devices in practical system.Comment: 7 pages, 3 figure
Hongyi Zhou - One of the best experts on this subject based on the ideXlab platform.
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integrated gbps quantum random Number Generator with real time extraction based on homodyne detection
Journal of The Optical Society of America B-optical Physics, 2019Co-Authors: Leilei Huang, Hongyi ZhouAbstract:High-speed quantum random Number Generators are highly demanded in cryptographic systems, whose bottleneck lies in the ease of implementation and the efficiency of real-time post-processing. Based on homodyne detection of a coherent state, we realize a compact Gbps real-time quantum random Number Generator with a silica planar light circuit. We integrate all the optical and electrical modules into a stand-alone device, use standard low-cost components, and make the whole system simple and robust. Homodyne detection and real-time hashing extraction circuits are built into compact electronics with a final generation rate of 1 Gbps. Our demonstration shows an economic, compact, robust, and high-speed quantum random Number Generator available for immediate commercialization.
I K Kominis - One of the best experts on this subject based on the ideXlab platform.
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quantum random Number Generator based on spin noise
Physical Review A, 2008Co-Authors: G E Katsoprinakis, M Polis, A Tavernarakis, A T Dellis, I K KominisAbstract:We present an implementation of a robust quantum random Number Generator based on the quantum fluctuations of the collective spin of an alkali-metal vapor. The achieved bit rate is limited by the spin relaxation rate of the alkali-metal atoms 1 /T2 to about 1 kbit/s. However, the same physical scheme, which is impervious to limitations posed by single-photon detectors used in current implementations and rests solely on threshold detection, can be extended to solid state systems with a bit rate higher than 1 Gbit/s.
