Non -Destructive Bell State Measurement Based on Parity Gates

被引：2
|
作者：
Wang Jieqiong [1 ]
Zhang Yong [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China
来源：
ACTA OPTICA SINICA | 2021年 / 41卷 / 20期
关键词：
quantum optics; quantum information and processing; Bell state measurement; parity gate; quantum logic gate; EXPERIMENTAL ENTANGLEMENT; QUANTUM COMPUTATION; PHOTONS; SCHEME;
D O I：
10.3788/AOS202141.2027002
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Because Bell state Measurement is the prerequisite for quantum information processing, a non-destructive measurement scheme for Bell state is proposed. In this scheme, the parity gates are introduced as key components, and C-NOT gates and Toffoli gates are implemented using the property that parity gates do not change the states of the input photons. Then, Toffoli gates combined with Hadamard gates are used to measure the 4 Bell states deterministically. The proposed scheme can be used to measure two-photon entangled states and extended to the application scenarios of three-photon entangled state, providing a new idea for Bell state measurement and quantum information processing.
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页数：5
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