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More randomness from a prepare-and-measure scenario with independent devices

How to generate genuine quantum randomness from untrusted devices is an important problem in quantum information processing. Inspired by previous work on a self-testing quantum random number generator [T. Lunghi et al., Phys. Rev. Lett. 114, 150501 (2015)], we present a method to generate quantum ra... Full description

Journal Title: arXiv.org Apr 7, 2016
Main Author: Yun-Guang, Han
Other Authors: Zhen-Qiang, Yin , Hong-Wei, Li , Chen, Wei , Wang, Shuang , Zheng-Fu, Han
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: DOI: 10.1103/PhysRevA.93.032332
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title: More randomness from a prepare-and-measure scenario with independent devices
format: Article
creator:
  • Yun-Guang, Han
  • Zhen-Qiang, Yin
  • Hong-Wei, Li
  • Chen, Wei
  • Wang, Shuang
  • Zheng-Fu, Han
subjects:
  • Quantum Theory
  • Numbers
  • Randomness
  • Random Numbers
  • Quantum Phenomena
  • Entropy
  • Data Processing
  • Mathematical Analysis
  • Self Testing
  • Computer Simulation
ispartof: arXiv.org, Apr 7, 2016
description: How to generate genuine quantum randomness from untrusted devices is an important problem in quantum information processing. Inspired by previous work on a self-testing quantum random number generator [T. Lunghi et al., Phys. Rev. Lett. 114, 150501 (2015)], we present a method to generate quantum randomness from a prepare-and-measure scenario with independent devices. In existing protocols, the quantum randomness depends only on a witness value (e.g., Clauser-Horne-Shimony-Holt value), which is calculated with the observed probabilities. Differently, here all the observed probabilities are directly used to calculate the min-entropy in our method. Through numerical simulation, we find that the min-entropy of our proposed scheme is higher than that in the previous work when a typical untrusted Bennett-Brassard 1984 (BB84) setup is used. Consequently, thanks to the proposed method, more genuine quantum random numbers may be obtained than before.
language: eng
source:
identifier: DOI: 10.1103/PhysRevA.93.032332
fulltext: fulltext_linktorsrc
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identifierDOI: 10.1103/PhysRevA.93.032332
subjectQuantum Theory ; Numbers ; Randomness ; Random Numbers ; Quantum Phenomena ; Entropy ; Data Processing ; Mathematical Analysis ; Self Testing ; Computer Simulation
descriptionHow to generate genuine quantum randomness from untrusted devices is an important problem in quantum information processing. Inspired by previous work on a self-testing quantum random number generator [T. Lunghi et al., Phys. Rev. Lett. 114, 150501 (2015)], we present a method to generate quantum randomness from a prepare-and-measure scenario with independent devices. In existing protocols, the quantum randomness depends only on a witness value (e.g., Clauser-Horne-Shimony-Holt value), which is calculated with the observed probabilities. Differently, here all the observed probabilities are directly used to calculate the min-entropy in our method. Through numerical simulation, we find that the min-entropy of our proposed scheme is higher than that in the previous work when a typical untrusted Bennett-Brassard 1984 (BB84) setup is used. Consequently, thanks to the proposed method, more genuine quantum random numbers may be obtained than before.
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titleMore randomness from a prepare-and-measure scenario with independent devices
descriptionHow to generate genuine quantum randomness from untrusted devices is an important problem in quantum information processing. Inspired by previous work on a self-testing quantum random number generator [T. Lunghi et al., Phys. Rev. Lett. 114, 150501 (2015)], we present a method to generate quantum randomness from a prepare-and-measure scenario with independent devices. In existing protocols, the quantum randomness depends only on a witness value (e.g., Clauser-Horne-Shimony-Holt value), which is calculated with the observed probabilities. Differently, here all the observed probabilities are directly used to calculate the min-entropy in our method. Through numerical simulation, we find that the min-entropy of our proposed scheme is higher than that in the previous work when a typical untrusted Bennett-Brassard 1984 (BB84) setup is used. Consequently, thanks to the proposed method, more genuine quantum random numbers may be obtained than before.
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abstractHow to generate genuine quantum randomness from untrusted devices is an important problem in quantum information processing. Inspired by previous work on a self-testing quantum random number generator [T. Lunghi et al., Phys. Rev. Lett. 114, 150501 (2015)], we present a method to generate quantum randomness from a prepare-and-measure scenario with independent devices. In existing protocols, the quantum randomness depends only on a witness value (e.g., Clauser-Horne-Shimony-Holt value), which is calculated with the observed probabilities. Differently, here all the observed probabilities are directly used to calculate the min-entropy in our method. Through numerical simulation, we find that the min-entropy of our proposed scheme is higher than that in the previous work when a typical untrusted Bennett-Brassard 1984 (BB84) setup is used. Consequently, thanks to the proposed method, more genuine quantum random numbers may be obtained than before.
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pubCornell University Library, arXiv.org
doi10.1103/PhysRevA.93.032332
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date2016-04-07