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arXiv 2006.11490quant-ph
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量子点激子耦合光机械半导体谐振腔中周期调制对量子和纠缠动力学的相干控制

Coherent control of quantum and entanglement dynamics via periodic modulations in optomechanical semi-conductor resonator coupled to quantum-dot excitons

Vijay Bhatt, Pradip K. Jha, Aranya B. Bhattacherjee, Souri Banerjee

摘要:

系统地研究了同时调制输入激光强度和量子点(QD)谐振频率对嵌入QD的光机械半导体谐振腔中的平均场动力学、涨落能量转移和纠缠的影响。我们表明,调制和混合系统可以被设计成达到所需的平均场值,控制波动能量转移和纠缠之间的各个自由度。通过仅调制QD频率可以实现非常高的纠缠度。两种调制之间的相互作用导致纠缠,其位于仅通过调制QD或泵浦激光强度产生的纠缠之间。当我们打开调制时,会发生从低静态到大动态纠缠的转变。这项研究为最优控制策略开辟了新的可能性,可用于量子通信平台中的数据信号传输和存储。

英文摘要:

We systematically study the influence of simultaneously modulating the input laser intensity and quantum dot (QD) resonance frequecy on the mean-field dynamics, fluctuation energy transfer and entanglement in a optomechanical semi-conductor resonator embedded with a QD. We show that the modulation and the hybrid system can be engineered to attain the desired mean-field values, control the fluctuation energy transfer and the entanglement between the various degrees of freedom. A remarkably high degree of entanglement can be achieved by modulating only the QD frequency. The interplay between the two modulations leads to an entanglement which lies between that generated solely by modulating either the QD or the pump laser intensity. A transition from low stationary to large dynamical entanglement occurs as we switch on the modulation. This study opens up new possibilities for optimal control strategies and can be used for data signal transfer and storage in quantum communication platforms.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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