Hybrid Cavity-QED with Rydberg Atoms and Microwave Circuits

具有里德伯原子和微波电路的混合腔 QED

基本信息

批准号：
EP/L019620/1
负责人：
Stephen Hogan
金额：
$ 66.84万
依托单位：
University College London
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2014
资助国家：
英国
起止时间：
2014 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FL019620%2F1
关键词：
Hybrid Cavity QED Rydberg Atoms

项目摘要

Atoms and molecules in highly-excited Rydberg states can exhibit very large electric dipole moments, on the order of 1000 Debye. These large dipole moments make them very well suited to studies of light-matter interactions at microwave frequencies, and long-range dipolar interactions in free-space and close to surfaces. They also make samples in high Rydberg states states very amenable to manipulation and trapping using inhomogeneous electric fields. The recent development of a new chip-based experimental architecture which exploits these large electric dipole moments to control the translational motion and internal quantum states of Rydberg atoms and molecules close to surfaces has opened up new opportunities in (i) the development of hybrid approaches to quantum information processing in which gas-phase and solid-state systems are combined, (ii) studies of long-range interactions between Rydberg atoms/molecules and surfaces, and (iii) the preparation and study of gas-phase molecular samples at low temperatures. In the work described in this proposal it is planned to exploit, and further develop, this architecture, in a manner which encompasses the first two of these areas, to perform experiments in a setting which can be described as a hybrid between traditional cavity-quantum-electrodynamics (cavity-QED), involving three-dimensional resonators and two-level quantum systems in the gas-phase, and purely solid-state circuit-QED.To achieve this helium atoms will be prepared in long-lived, circular Rydberg states. These states will then be coupled to microwave fields in the vicinity of chip-based co-planar microwave waveguides to study their coherence times and long-range Rydberg-atom--surface interactions. The off-resonant interaction of these atomic samples with chip-based superconducting microwave resonators will then be exploited for the realisation of new chip-based devices for non-destructive detection of the Rydberg samples.In the long term it is foreseen to use the gas-phase Rydberg atoms in this hybrid system as long-coherence-time quantum memories which are coupled via the chip-based microwave resonators to superconducting circuits in which fast operations can be performed. In this way, the challenges associated with exploiting each system individually for applications in quantum information processing will be circumvented.

高度兴奋的rydberg状态中的原子和分子可以在1000 debye的订单上表现出非常大的电偶极矩。这些大的偶极矩使它们非常适合于微波频率下的光 - 物质相互作用的研究，以及在自由空间和靠近表面的远程偶极相互作用。他们还将在高rydberg州的状态中制作样品，非常适合使用不均匀的电场操纵和捕获。最新的基于CHIP的实验架构的最新发展，该实验架构利用这些大型电偶极矩来控制Rydberg原子和靠近表面的分子的翻译运动和内部量子状态，在（i）（i）在量子和固体互动中（II）相互作用（II）相互作用的量子信息处理的混合方法的开发为（i）开发了（II）的量子。表面，（iii）在低温下气相分子样品的制备和研究。在本提案中描述的工作中，计划以包含这些领域的前两个区域的方式来开发和进一步发展，以在环境中进行实验，该环境可以被描述为传统的腔 - 量子 - 量子 - 电力动力学（腔动力学）之间的杂种，涉及三维量子和两维量子的固体和两极的固定系统，并固定了固定量的固定量和固定量。该氦原子将以长寿的圆形rydberg状态制备。然后，这些状态将与基于芯片的共同平面微波波指导附近的微波场耦合，以研究其相干时间和远距离rydberg-atom- s-serface的相互作用。 The off-resonant interaction of these atomic samples with chip-based superconducting microwave resonators will then be exploited for the realisation of new chip-based devices for non-destructive detection of the Rydberg samples.In the long term it is foreseen to use the gas-phase Rydberg atoms in this hybrid system as long-coherence-time quantum memories which are coupled via the chip-based微波谐振器可进行超导电路，可以在其中进行快速操作。这样，将规避与每个系统分别用于量子信息处理中应用程序相关的挑战。