arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1908.04456physics.optics
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光机械谐振腔中的综合规范场

Synthetic gauge field in a single optomechanical resonator

Yuan Chen, Yan-Lei Zhang, Zhen Shen, Chang-Ling Zou, Guang-Can Guo, Chun-Hua Dong

摘要:

最近出现了合成规范场,它是在量子模拟、拓扑物质和受保护的激发态传输过程中产生的。例如,超冷原子在光晶格中隧穿时会经历光诱导的有效磁场,并提供了模拟量子霍尔效应和拓扑绝缘体的平台。类似地,在耦合谐振器阵列中已经证明了与位点之间的光子传输相关联的磁场。在这里,我们报告的第一个实验演示的合成规范场的虚维玻色子模式在一个单一的光机械谐振器。利用简并顺时针(CW)和逆时针(CCW)光学模以及机械模,通过调节驱动激光器的相位,实现了可控的合成规范场。对于不同的合成磁通量,实现了三种模式之间的非互易转换。作为一个证明的原理演示,我们还显示了一个快速变化的合成规范场下的系统的动力学。我们的演示不仅提供了一个通用的和可控的平台,研究合成规范场在高维,但也使探索超快速规范场调谐与大的动态范围,这是有限的磁场。

英文摘要:

Synthetic gauge fields have recently emerged, arising in the context of quantum simulations, topological matter, and the protected transportation of excitations against defects. For example, an ultracold atom experiences a light-induced effective magnetic field when tunnelling in an optical lattice, and offering a platform to simulate the quantum Hall effect and topological insulators. Similarly, the magnetic field associated with photon transport between sites has been demonstrated in a coupled resonator array. Here, we report the first experimental demonstration of a synthetic gauge field in the virtual dimension of bosonic modes in a single optomechanical resonator. By employing degenerate clockwise (CW) and counter-clockwise (CCW) optical modes and a mechanical mode, a controllable synthetic gauge field is realized by tuning the phase of the driving lasers. The non-reciprocal conversion between the three modes is realized for different synthetic magnetic fluxes. As a proof-of-principle demonstration, we also show the dynamics of the system under a fast-varying synthetic gauge field. Our demonstration not only provides a versatile and controllable platform for studying synthetic gauge fields in high dimensions but also enables an exploration of ultra-fast gauge field tuning with a large dynamic range, which is restricted for a magnetic field.

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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