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He G, Sun Y, Hu L, Zhang R, Chen X, Wang J. Five-partite entanglement generation between two optical frequency combs in a quasi-periodic χ (2) nonlinear optical crystal. Sci Rep 2017; 7:9054. [PMID: 28831163 PMCID: PMC5567341 DOI: 10.1038/s41598-017-09346-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 07/17/2017] [Indexed: 11/09/2022] Open
Abstract
We theoretically prove five-partite entanglement can be produced among modes of two simultaneously generated optical frequency combs via second-order nonlinear interaction in a designed periodically poled lithium niobat (PPLN) crystal. An extendible model is proposed to analyze the entanglement characteristics of generated comb modes by applying van Loock and Furusawa criteria. Our proposal provides a potential approach for generating multipartite entangled states, the so-called cluster states, which are the key resources for quantum computation. Moreover, simultaneously generation of two entangled combs can provide much higher efficiency to generate cluster states.
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Affiliation(s)
- Guangqiang He
- State Key Laboratory of Advanced Optical Communication Systems and Networks, Electronic Engineering Department, Shanghai Jiao Tong University, Shanghai, 200240, China.
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, 200062, China.
- State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences, Beijing, 100093, China.
| | - Yu Sun
- State Key Laboratory of Advanced Optical Communication Systems and Networks, Electronic Engineering Department, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Linxi Hu
- State Key Laboratory of Advanced Optical Communication Systems and Networks, Electronic Engineering Department, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Renhui Zhang
- State Key Laboratory of Advanced Optical Communication Systems and Networks, Electronic Engineering Department, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xikun Chen
- State Key Laboratory of Advanced Optical Communication Systems and Networks, Electronic Engineering Department, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jindong Wang
- Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou, 510006, PR China.
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