Atomic Coherence Assisted Multipartite Entanglement Generation with DELC Four-Wave Mixing

• URL: http://arxiv.org/abs/2204.06291v1
• Date: Wed, 13 Apr 2022 10:41:14 GMT
• Title: Atomic Coherence Assisted Multipartite Entanglement Generation with DELC Four-Wave Mixing
• Authors: Yuliang Liu, Jiajia Wei, Mengqi Niu, Yixin Lin, Zhili Chen, Jin Yan, Binshuo Luo, Feng Li, Yin Cai, and Yanpeng Zhang
• Abstract summary: A four-wave mixing process is proposed to generate all-optical controlled multipartite entanglement within a single device. We find that the violation of the entanglement criteria inequalities is coherent-channel dependent, and the produced states can be directly modulated via atomic coherence. It may help provide a compact method for realizing large scale quantum networks.
• Score: 12.779813631790745
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Multipartite entanglement plays an important role in quantum information processing and quantum metrology. Here, the dressing-energy-level-cascaded (DELC) four-wave mixing (FWM) processes are proposed to generate all-optical controlled multipartite entanglement within a single device. The entanglement characteristics of the produced states of light are characterized by applying the Duan criterion and the positivity under partial transposition criterion. Moreover, by using an internal dressing field to modulate atomic coherence, multiple quantum coherent channels of FWM are simultaneously constructed, which result in a great extension of entanglement mode number and quantum information capacity. We find that the violation of the entanglement criteria inequalities is coherent-channel dependent, and the produced states can be directly modulated via atomic coherence. Our system can integrate the generation and modulation of the entangled states in one process. It may help provide a compact method for realizing large scale quantum networks.

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