Generation of an optical Schrodinger-cat-like state in a nonideal cavity by injecting opposite-phase atomic dipoles
- Authors
- Yang, Daeho; Kim, Junki; Lee, Moonjoo; Chough, Young-Tak; An, Kyungwon
- Issue Date
- Aug-2016
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW A, v.94, no.2
- Journal Title
- PHYSICAL REVIEW A
- Volume
- 94
- Number
- 2
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/87342
- DOI
- 10.1103/PhysRevA.94.023826
- ISSN
- 2469-9926
- Abstract
- We propose a method for generating an optical Schrodinger-cat-like state in a cavity in a substantial decoherence regime. Even when the cavity decay rate is considerably large, a cat-like state can be generated in a laser-like setting if the gain for the field is larger than the loss. Under the condition that opposite-phase atomic dipoles repeatedly traverse the cavity, the cavity field converges to a squeezed vacuum state in a steady state. A Schrodinger-cat-like state is then generated when a single photon decay occurs. The phase-space distribution of the cat state can be revealed in homodyne detection by using the decaying photon as a herald event. Quantum trajectory simulation was used to identify the conditions for the Schrodinger-cat-like state formation as well as to analyze the properties of those states. Based on these simulations, possible experiments are proposed within the reach of the current technology.
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