Enhancement of Quantum Entanglement Between Twin Beams Via a Four-Wave Mixing Process with Double Feedback
Applied physics express(2024)
摘要
Two-port feedback has been theoretically studied and proved to be effective in enhancing the degree of entanglement of the output beams for a four-wave mixing process. Here, to further consider the loss effects and phase delays, we use a model that is closer to practical implementation. By reasonably tuning the feedback coefficients, we find that a higher degree of entanglement and higher power of the output beams can be achieved, and a loose requirement for phase-locking accuracy can be obtained. This scheme may have promising applications in practical quantum computation and quantum communication.
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关键词
quantum entanglement,quantum control,four-wave mixing,quantum optics
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