1. Generation of entangled states by a linear coupling coupler pumped in two modes induced by broadband laser.
- Author
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Oanh, Luong Thi Tu, Khoa, Doan Quoc, Lanh, Chu Van, Dong, Hoang Minh, Dung, Nguyen Thi, Thao, Nguyen Thi, and Cuong, Ngo Xuan
- Subjects
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NONLINEAR oscillations , *QUANTUM entanglement , *WHITE noise , *HILBERT space , *LASERS , *NONLINEAR oscillators - Abstract
• The influence of the laser width on the possibility of generation Bell states is considered. • Exact formulas determining complex probability amplitudes for the system were obtained. • Probabilities to the system exist in the Bell states are shown. • The parameter b 0 is an important parameter to play the controlling role position and value of probabilities the system. We research on a Kerr nonlinear coupler comprising two nonlinear oscillations linearly couple with each other. This coupler is pumped by external classical fields, which are supposed to be decomposed into two parts: a coherent part and a randomly fluctuating chaotic component (white noise). We can see that the quantum evolution of the pumped couplers is closed in a Hilbert space of two-qubit spanned by single-photon and vacuum states only. Hence, the pumped couplers can treat as a system of two-qubit. Analysis of time evolution of the quantum entanglement shows that maximally entangled states can be generated in the system and compare these results with that obtained previously by other authors. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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