Polarization-Independent Coherent Spatial-Temporal Interface with Low Loss
Polarization-Independent Coherent Spatial-Temporal Interface with Low Loss
复制标题
低损耗的偏振无关相干时空接口
DOI:
10.1103/physrevapplied.12.064058
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发表时间:
2019-12
影响因子:
4.6
通讯作者:
Guo Guang-Can
中科院分区:
文献类型:
--
作者:
Tang Jun-Feng;Hou Zhibo;Xu Qi-Fan;Xiang Guo-Yong;Li Chuan-Feng;Guo Guang-Can
A coherent interface between temporal and spatial degrees of freedom (DOFs) allows one to use photons to take advantage of both types of DOF in quantum information processing. Previous interfaces either suffer from a typical loss of 1–3 dB or disturb the polarization DOF in the conversion process. Here we realize a low-loss polarization-independent coherent interface between temporal and spatial DOFs, specifically the time-bin and path modes. The experimental loss is 0.2 dB, and the fidelity of the conversion process is found by tomography to be 0.970 (0.947) without (with) considering the polarization DOF. As an application, our interface transforms a time-bin qubit output from an entanglement distribution channel to a path qubit, which allows postselection-loophole-free measurement of the Bell inequality. With its low loss and polarization independence, our interface promises applications in coherent conversion from hybrid temporal-polarization states to spatial-polarization states and could be put into a cavity to boost the generation rate of multiphoton polarization-entangled sources or enhance the scalability of sequential quantum metrology.
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DOI:
10.4018/978-1-7998-6677-0.ch001
发表时间:
2021
期刊:
Limitations and Future Applications of Quantum Cryptography
影响因子:
--
作者:
S. Billewar;G. Londhe;Sunil Ghane
通讯作者:
S. Billewar;G. Londhe;Sunil Ghane
影响因子:
2.9
作者:
C. Kupchak;P. Bustard;K. Heshami;J. Erskine;M. Spanner;D. England;B. Sussman
通讯作者:
C. Kupchak;P. Bustard;K. Heshami;J. Erskine;M. Spanner;D. England;B. Sussman
影响因子:
13.6
作者:
Vedovato F;Agnesi C;Schiavon M;Dequal D;Calderaro L;Tomasin M;Marangon DG;Stanco A;Luceri V;Bianco G;Vallone G;Villoresi P
通讯作者:
Villoresi P
影响因子:
8.6
作者:
Zhong Han-Sen;Li Yuan;Li Wei;Peng Li-Chao;Su Zu-En;Hu Yi;He Yu-Ming;Ding Xing;Zhang Weijun;Li Hao;Zhang Lu;Wang Zhen;You Lixing;Wang Xi-Lin;Jiang Xiao;Li Li;Chen Yu-Ao;Liu Nai-Le;Lu Chao-Yang;Pan Jian-Wei
通讯作者:
Pan Jian-Wei
影响因子:
8.6
作者:
Donohue, John M.;Agnew, Megan;Resch, Kevin J.
通讯作者:
Resch, Kevin J.