Liu Bing, Li Dong-Xiao, Shao Xiao-Qiang
Center for Quantum Sciences and School of Physics, Northeast Normal University, Changchun 130024, China.
Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, China.
Entropy (Basel). 2019 Apr 16;21(4):402. doi: 10.3390/e21040402.
A scheme is proposed to generate maximally entangled states of two Λ -type atoms trapped in separate overdamped optical cavities using quantum-jump-based feedback. This proposal can stabilize not only the singlet state, but also the other three triplet states by alternating the detuning parameter and relative phase of the classical fields. Meanwhile it is convenient to manipulate atoms, and much more robust against spontaneous emission of atoms. The parameters related to the potential experiment are analyzed comprehensively and it is confirmed that the quantum feedback technology is a significant tool for entanglement production with a high fidelity.
提出了一种利用基于量子跃迁的反馈来生成被困在单独过阻尼光学腔中的两个Λ型原子的最大纠缠态的方案。该方案不仅可以通过交替失谐参数和经典场的相对相位来稳定单重态，还可以稳定其他三个三重态。同时，它便于操纵原子，并且对原子的自发辐射具有更强的鲁棒性。对与潜在实验相关的参数进行了全面分析，并证实量子反馈技术是产生高保真度纠缠的重要工具。
