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arXiv · 2108.02436

Deterministic Time-Bin Entanglement between a Single Photon and an Atomic Ensemble

Peng-Fei Sun·Yong Yu·Zi-Ye An·Jun Li·Chao-Wei Yang·Xiao-Hui Bao·Jian-Wei Pan
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Abstract

Hybrid matter-photon entanglement is the building block for quantum networks. It is very favorable if the entanglement can be prepared with a high probability. In this paper, we report the deterministic creation of entanglement between an atomic ensemble and a single photon by harnessing Rydberg blockade. We design a scheme that creates entanglement between a single photon's temporal modes and the Rydberg levels that host a collective excitation, using a process of cyclical retrieving and patching. The hybrid entanglement is tested via retrieving the atomic excitation as a second photon and performing correlation measurements, which suggest an entanglement fidelity of 87.8%. Our source of matter-photon entanglement will enable the entangling of remote quantum memories with much higher efficiency.

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Peng-Fei Sun, Yong Yu, Zi-Ye An, Jun Li, Chao-Wei Yang, Xiao-Hui Bao, Jian-Wei Pan. 2021-08-05. Deterministic Time-Bin Entanglement between a Single Photon and an Atomic Ensemble. https://doi.org/10.1103/physrevlett.128.060502

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