里德堡态局域堵塞与环形腔极子调控的多波混频

项目名称： 里德堡态局域堵塞与环形腔极子调控的多波混频

项目编号： No.11474228

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 张彦鹏

作者单位： 西安交通大学

项目金额： 95万元

中文摘要： 里德堡态原子间由于具有强相互作用而产生局域堵塞现象，该机制使得里德堡态原子成为量子计算中量子比特的一种很好的载体，研究利用光场对里德堡态原子进行调控成为目前物理学中一个前沿问题。同时，腔中的非线性光学过程由于在量子信息处理方面有很重要的应用，因而也是目前量子信息研究的一个前沿方向。本项目首先在实验上研究里德堡态原子间强的范德瓦尔斯与偶极相互作用诱导的局域堵塞现象与原子相干产生的明暗态之间的相互作用，利用这种相互作用对电磁诱导透明增强的共存的多个多波混频的产生，时空干涉，增强抑制进行调控，进而探索该方法在产生里德堡态纠缠光子对与可控量子逻辑门方面的应用；其次，在环形腔系统中，实验研究原子相干产生的明暗态与腔模相互作用形成的腔极子，通过调控腔极子的方法来实现对多波混频的调控，进而研究利用腔中的多波混频来实现纠缠光与压缩光的方法。最后，本项目研究环形腔中里德堡态原子系统的多波混频调控.

中文关键词： 里德堡态；局域堵塞；电磁诱导透明；腔极子；多波混频

英文摘要： The phenomenon of local blockade due to strong interaction between atoms in Rydberg states, makes Rydberg atoms promising carriers for qubits in quantum computing. So exploring how to control the Rydberg atoms by light now becomes a frontier issue in Physics. Also, the nonlinear optical process in cavity becomes a frontier direction in the research of quantum information, because of its important application in quantum information processing. In this research proposal, we will first experimentally investigate the interaction between the local blockade induced by the strong van der Waals and dipole interactions between Rydberg atoms and the bright and dark states generated by atomic coherence, then control the generation, mutual competition, temporal and spatial interence, enhancement and suppression of coexisting multi-wave mixing (MWM) processes enhanced by the electromagnetically induced transparency, and further explore the applications of such control in the generation of Rydberg entangled photon pair and controllable quantum logic gate. Morover, we will experimentally study the cavity polariton generated by the interaction between the bright and dark states and cavity mode in ring cavity system, demonstrate the control of MWM processes by the control of cavity polariton, further explore the method to generate entangled and squeezed light beams by MWM in cavity. Finally, we will investigate the control of the Rydberg MWM process in ring cavity.

英文关键词： Rydberg state;local blockade;electromagnetically induced transparency;cavity polariton;multi-wave mixing