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

• URL: http://arxiv.org/abs/2108.02436v1
• Date: Thu, 5 Aug 2021 08:12:08 GMT
• Title: Deterministic Time-Bin Entanglement between a Single Photon and an Atomic Ensemble
• Authors: Peng-Fei Sun, Yong Yu, Zi-Ye An, Jun Li, Chao-Wei Yang, Xiao-Hui Bao, Jian-Wei Pan
• Abstract summary: 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. 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%.
• Score: 14.48328955835803
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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