Generation and Detection of Quantum Correlation in Semiconductor Nanostructures

我们成功地开发了一种高灵敏度的介观系统电流波动测量系统，并将其应用于电子干涉仪、量子点和量子线等各种半导体纳米结构的动态输运测量。这些纳米结构最近被设想为创造和探测电子纠缠的一个很好的平台。我们展示了量子状态下“涨落定理”的第一个实验验证和极化核系统的产生。我们的研究结果令人信服地证实了精确的噪声测量对于解决纠缠和非平衡输运现象是必不可少的。

We have successfully developed a high-sensitive measurement system for current fluctuation in mesoscopic systems, which was applied to measure the dynamical transport through various semiconductor nanostructures such as electron interferometers, quantum dots, and quantum wires. These nanostructures are recently envisaged to be a nice stage to create and detect electronic entanglement. We demonstrated the first experimental test of "fluctuation theorem" in quantum regime and the generation of the polarized nuclear systems. Our achievement convincingly confirms that the precise noise measurement is indispensible to address the entanglement and the nonequilibrium transport phenomena.