Statistics of states generated by quantum-scissors device

doi:10.1088/1674-1056/28/3/030302

中国物理B ›› 2019, Vol. 28 ›› Issue (3): 30302-030302.doi: 10.1088/1674-1056/28/3/030302

Statistics of states generated by quantum-scissors device

Ming-Hao Wang(王明浩), Guo-An Yan(闫国安)

1 State Key Laboratory of Magnetic Resonances and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China;
3 School of Physics and Technology, Wuhan University, Wuhan 430072, China

收稿日期:2018-11-16 修回日期:2018-12-26 出版日期:2019-03-05 发布日期:2019-03-05
通讯作者: Ming-Hao Wang, Guo-An Yan E-mail:wang_ming_hao@126.com;yanguoan@126.com
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11725524, 61471356, and 11674089).

Statistics of states generated by quantum-scissors device

Ming-Hao Wang(王明浩)^1,2, Guo-An Yan(闫国安)^1,3

1 State Key Laboratory of Magnetic Resonances and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China;
3 School of Physics and Technology, Wuhan University, Wuhan 430072, China

Received:2018-11-16 Revised:2018-12-26 Online:2019-03-05 Published:2019-03-05
Contact: Ming-Hao Wang, Guo-An Yan E-mail:wang_ming_hao@126.com;yanguoan@126.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11725524, 61471356, and 11674089).

摘要/Abstract

摘要： Generating desired states is a prerequisite in quantum information. Some desired states can be generated by a quantum-scissors device (QSD). We present a detailed analysis of the properties of the generated states, including average photon numbers and intensity gains. The theoretical analysis shows that there is a nondeterministic amplification in terms of the average photon number under the condition that the average photon number of the input state is less than 1. In contrast to the input states, the generated states show the nonclassical property described by the negativity of the Wigner function. Furthermore, we generalize the QSD to truncate arbitrary photon number terms of the input states, which may be useful in high-dimensional quantum information processing.

关键词: quantum state generation, nondeterministic amplification, nonclassical property, generalized quantum-scissors

Abstract: Generating desired states is a prerequisite in quantum information. Some desired states can be generated by a quantum-scissors device (QSD). We present a detailed analysis of the properties of the generated states, including average photon numbers and intensity gains. The theoretical analysis shows that there is a nondeterministic amplification in terms of the average photon number under the condition that the average photon number of the input state is less than 1. In contrast to the input states, the generated states show the nonclassical property described by the negativity of the Wigner function. Furthermore, we generalize the QSD to truncate arbitrary photon number terms of the input states, which may be useful in high-dimensional quantum information processing.

Key words: quantum state generation, nondeterministic amplification, nonclassical property, generalized quantum-scissors

中图分类号: (Quantum mechanics)

03.65.-w

03.67.-a (Quantum information) 89.70.-a (Information and communication theory) 41.85.-p (Beam optics)

王明浩, 闫国安. Statistics of states generated by quantum-scissors device[J]. 中国物理B, 2019, 28(3): 30302-030302.

Ming-Hao Wang(王明浩), Guo-An Yan(闫国安). Statistics of states generated by quantum-scissors device[J]. Chin. Phys. B, 2019, 28(3): 30302-030302.

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Statistics of states generated by quantum-scissors device

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