期刊论文

Tan, Hua-Tang

英文

PHYSICAL REVIEW A

2469-9926

2011

83

6

062310

10.1103/PhysRevA.83.062310

National Science Council (NSC) of ROCMinistry of Science and Technology, Taiwan [NSC-99-2112-M-006-008-MY3]; National Center for Theoretical Science of NSC; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [10804035, 60878004, 11074087]; SRFDPSpecialized Research Fund for the Doctoral Program of Higher Education (SRFDP) [200805111014, 200805110002]; SDRF of CCNU [CCNU 09A01023]; Natural Science Foundation of Hubei ProvinceNatural Science Foundation of Hubei Province [2010CDA075]

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In this paper, we present a scheme for generating continuous-variable entanglement between two spatially separated nanocavities in photonic crystals, which are mediated by a coupled-resonator optical waveguide. The entanglement degree and purity of the generated states are investigated as varying the cavity frequencies, the cavity-waveguide coupling strength, and the location of the second cavity. It is shown that a steady and pure entanglement between separated nanocavities can be generated only with a weak cavity-waveguide coupling when the cavities are resonant with the band center of the w...