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  • Received: Sep. 29, 2014

    Accepted: Nov. 28, 2014

    Posted: Jan. 23, 2019

    Published Online: Sep. 25, 2018

    The Author Email: Shuang Wang (, Zhenqiang Yin (

    DOI: 10.3788/COL201513.021405

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    Manli Xu, Jingzheng Huang, Wenye Liang, Chunmei Zhang, Shuang Wang, Zhenqiang Yin, Wei Chen, Zhengfu Han. Adjustable unbalanced quantum random-number generator[J]. Chinese Optics Letters, 2015, 13(2): 021405

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Chinese Optics Letters, Vol. 13, Issue 2, 021405 (2015)

Adjustable unbalanced quantum random-number generator

Manli Xu1,2, Jingzheng Huang1,2, Wenye Liang1,2, Chunmei Zhang1,2, Shuang Wang1,2,*, Zhenqiang Yin1,2,**, Wei Chen1,2, and Zhengfu Han1,2

Author Affiliations

  • 1Key Laboratory of Quantum Information, Chinese Academy of Sciences (CAS), University of Science and Technology of China, Hefei 230026, China
  • 2Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China


We report an adjustable unbalanced quantum random-number generator based on the polarization of photons, which can produce nondeterministic true random unbalanced numbers. The underlying physical process is inherently quantum mechanical. To prove the quality of the output sequence of the proposed generator, we test the obtained bias-free sequence through the 3-standard-deviation criteria and the National Institutes of Standards and Technology test suite. Another type of nondeterministic unbalanced random-number generator is also studied in this work, to evaluate the quality of the output biased random numbers.

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