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20 December 2019 Controlling EPR correlations via a coherent signal injection
Jingyan Li, Qingping Hu, Yanqin Ren, Qing Ye
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Proceedings Volume 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019); 112092D (2019) https://doi.org/10.1117/12.2548264
Event: Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 2019, Xi'an, China
Abstract
In this paper, a cascaded optical parametric system combing degenerate optical parametric oscillation (OPO) and second harmonic generation (SHG) is investigated. By using the positive-P representation and standard input-output relations, and using quantum trajectory numerical simulation, we can analyse the quantum correlation behavior of the system above or below threshold. By injecting a small coherent signal in the lowest field mode, the threshold of the system can be changed. More importantly, the symmetry property of the EPR steering can also easily be controlled. Without signal injection, the EPR steering only occurs between two higher field modes below threshold, but it will disappear with injection. For EPR steering of other two pair bipartition is formerly not existent, while they occur with injection. Meanwhile, the steering property of the lowest mode and the highest mode becomes asymmetric by changing the value of the signal. The injection of the coherent signal allows for a simple means of control over the EPR steering properties of the system.
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Jingyan Li, Qingping Hu, Yanqin Ren, and Qing Ye "Controlling EPR correlations via a coherent signal injection", Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 112092D (20 December 2019); https://doi.org/10.1117/12.2548264
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KEYWORDS
Optical parametric oscillators
Second-harmonic generation
Harmonic generation
Stochastic processes
Nonlinear optics
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