Bloch Oscillations of Hybrid Light‐Matter Particles in a Waveguide Array
Bloch Oscillations of Hybrid Light‐Matter Particles in a Waveguide Array
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DOI：
10.1002/adom.202100126
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发表时间：
2020-12
影响因子：
9
通讯作者：
J. Beierlein;O. Egorov;T. Harder;P. Gagel;M. Emmerling;Schneider;S. Höfling;U. Peschel;S. Klembt
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文献类型：
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作者：
J. Beierlein;O. Egorov;T. Harder;P. Gagel;M. Emmerling;Schneider;S. Höfling;U. Peschel;S. Klembt
布洛赫振荡是量子力学中众所周知的现象，其中晶格中的电子在存在电场梯度的情况下经历振荡运动。在这里，作者报告了混合轻物质粒子的布洛赫振荡，称为激子-极化激元（极化激元），被限制在耦合微腔波导阵列中。为此，波导宽度和它们的相互耦合被仔细地设计，使得垂直于传播的极化激元的运动方向诱导恒定的能量梯度。这种技术使我们能够直接观察和研究真实的-和动量-空间中的布洛赫振荡。此外，实验结果支持基于修改后的Gross-Pitaevskii方法的数值模拟。这项工作提供了一个重要的转移的基本概念的量子力学集成固态器件，使用量子流体的光。
Bloch oscillations are a phenomenon well known from quantum mechanics where electrons in a lattice experience an oscillatory motion in the presence of an electric field gradient. Here, the authors report on Bloch oscillations of hybrid light−matter particles, called exciton‐polaritons (polaritons), being confined in an array of coupled microcavity waveguides. To this end, the waveguide widths and their mutual couplings are carefully designed such that a constant energy gradient is induced perpendicular to the direction of motion of the propagating polaritons. This technique allows us to directly observe and study Bloch oscillations in real‐ and momentum‐space. Furthermore, the experimental findings are supported by numerical simulations based on a modified Gross–Pitaevskii approach. This work provides an important transfer of basic concepts of quantum mechanics to integrated solid state devices, using quantum fluids of light.