Noiseless linear amplification of polarization-encoded quantum states with efficient quantum scissors

被引：0

作者：

Feng, Ya-Peng ^{[1
,2
]}

Gu, Jing-Qiu ^{[1
,2
]}

Zhou, Lan ^{[3
]}

Zhong, Wei ^{[4
]}

Du, Ming-Ming ^{[1
,2
]}

Li, Xi-Yun ^{[3
]}

Sheng, Yu-Bo ^{[1
,2
,4
]}

机构：

[1] Nanjing Univ Posts & Telecommun, Coll Elect & Opt Engn, Nanjing 210023, Peoples R China

[2] Nanjing Univ Posts & Telecommun, Coll Flexible Elect Future Technol, Nanjing 210023, Peoples R China

[3] Nanjing Univ Posts & Telecommun, Coll Sci, Nanjing 210023, Peoples R China

[4] Nanjing Univ Posts & Telecommun, Inst Quantum Informat & Technol, Nanjing 210003, Peoples R China

来源：

QUANTUM INFORMATION PROCESSING | 2024年 / 23卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Noiseless linear amplification; Quantum communication; Photon transmission loss; Local-quadrature squeezing; Polarization-encoding; CRYPTOGRAPHY;

D O I：

10.1007/s11128-024-04416-8

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Polarization-encoded single-photon qubit and single-photon entanglement are important resources of quantum communication. In practical long-distance quantum communication, photon transmission loss caused by the channel noise is a big obstacle. Noiseless linear amplification (NLA) is a useful method to solve the photon transmission loss problem. In the paper, we propose two efficient NLA protocols for the polarization-encoded single-photon qubit and single-photon entanglement, respectively. Our NLA protocols can increase the fidelity of the target photon state and perfectly preserve the encoded polarization feature. Moreover, local-quadrature squeezing operation is introduced into the NLA protocols to further improve the amplification. Our NLA protocols have important application in future quantum communication field.

引用

页数：22

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