Loss-tolerant measurement-device-independent quantum random number generation

Quantum random number generators (QRNGs) output genuine random numbers based upon the uncertainty principle. A QRNG contains two parts in general—a randomness source and a readout detector. How to remove detector imperfections has been one of the most important questions in practical randomness gene...

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Main Authors: Zhu Cao, Hongyi Zhou, Xiongfeng Ma
Format: Article
Language:English
Published: IOP Publishing 2015-01-01
Series:New Journal of Physics
Subjects:
Online Access:https://doi.org/10.1088/1367-2630/17/12/125011
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author Zhu Cao
Hongyi Zhou
Xiongfeng Ma
author_facet Zhu Cao
Hongyi Zhou
Xiongfeng Ma
author_sort Zhu Cao
collection DOAJ
description Quantum random number generators (QRNGs) output genuine random numbers based upon the uncertainty principle. A QRNG contains two parts in general—a randomness source and a readout detector. How to remove detector imperfections has been one of the most important questions in practical randomness generation. We propose a simple solution, measurement-device-independent QRNG, which not only removes all detector side channels but is robust against losses. In contrast to previous fully device-independent QRNGs, our scheme does not require high detector efficiency or nonlocality tests. Simulations show that our protocol can be implemented efficiently with a practical coherent state laser and other standard optical components. The security analysis of our QRNG consists mainly of two parts: measurement tomography and randomness quantification, where several new techniques are developed to characterize the randomness associated with a positive-operator valued measure.
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spelling doaj.art-ab66dfe630d1454f95f8858fc2dff6382023-08-08T14:23:15ZengIOP PublishingNew Journal of Physics1367-26302015-01-01171212501110.1088/1367-2630/17/12/125011Loss-tolerant measurement-device-independent quantum random number generationZhu Cao0Hongyi Zhou1Xiongfeng Ma2https://orcid.org/0000-0002-9441-4006Center for Quantum Information, Institute for Interdisciplinary Information Sciences , Tsinghua University, Beijing, People’s Republic of ChinaCenter for Quantum Information, Institute for Interdisciplinary Information Sciences , Tsinghua University, Beijing, People’s Republic of ChinaCenter for Quantum Information, Institute for Interdisciplinary Information Sciences , Tsinghua University, Beijing, People’s Republic of ChinaQuantum random number generators (QRNGs) output genuine random numbers based upon the uncertainty principle. A QRNG contains two parts in general—a randomness source and a readout detector. How to remove detector imperfections has been one of the most important questions in practical randomness generation. We propose a simple solution, measurement-device-independent QRNG, which not only removes all detector side channels but is robust against losses. In contrast to previous fully device-independent QRNGs, our scheme does not require high detector efficiency or nonlocality tests. Simulations show that our protocol can be implemented efficiently with a practical coherent state laser and other standard optical components. The security analysis of our QRNG consists mainly of two parts: measurement tomography and randomness quantification, where several new techniques are developed to characterize the randomness associated with a positive-operator valued measure.https://doi.org/10.1088/1367-2630/17/12/125011quantum randomnessmeasurement-device-independentmeasurement tomographyloss tolerant
spellingShingle Zhu Cao
Hongyi Zhou
Xiongfeng Ma
Loss-tolerant measurement-device-independent quantum random number generation
New Journal of Physics
quantum randomness
measurement-device-independent
measurement tomography
loss tolerant
title Loss-tolerant measurement-device-independent quantum random number generation
title_full Loss-tolerant measurement-device-independent quantum random number generation
title_fullStr Loss-tolerant measurement-device-independent quantum random number generation
title_full_unstemmed Loss-tolerant measurement-device-independent quantum random number generation
title_short Loss-tolerant measurement-device-independent quantum random number generation
title_sort loss tolerant measurement device independent quantum random number generation
topic quantum randomness
measurement-device-independent
measurement tomography
loss tolerant
url https://doi.org/10.1088/1367-2630/17/12/125011
work_keys_str_mv AT zhucao losstolerantmeasurementdeviceindependentquantumrandomnumbergeneration
AT hongyizhou losstolerantmeasurementdeviceindependentquantumrandomnumbergeneration
AT xiongfengma losstolerantmeasurementdeviceindependentquantumrandomnumbergeneration