A coherent all-electrical interface between polar molecules and mesoscopic superconducting resonators
A coherent all-electrical interface between polar molecules and mesoscopic superconducting resonators
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DOI：
10.1038/nphys386
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发表时间：
2006-09-01
期刊：
影响因子：
19.6
通讯作者：
Zoller, P.
中科院分区：
文献类型：
--
作者：
Andre, A.;Demille, D.;Zoller, P.
构建可扩展的量子处理器需要在大规模量子系统中对量子相干进行相干控制和保持。介观固态系统，如约瑟夫森结和量子点，具有使用局部电信号和不言而喻的标度的稳健控制技术；然而，一般而言，量子态在这里快速解码。相比之下，基于囚禁离子和中性原子的量子光学系统表现出更好的相干特性，但它们的小型化和与电子电路的集成仍然是一个挑战。在这里，我们描述了将单粒子系统--孤立的极性分子--与介观固态设备进行集成的方法，以产生强大的、连贯的、量子水平的控制。我们的装置提供了一种可扩展的腔-QED型量子计算机体系结构，其中存储在长寿命旋转分子态中的遥远量子比特的纠缠是通过微波光子交换实现的。
Building a scalable quantum processor requires coherent control and preservation of quantum coherence in a large-scale quantum system. Mesoscopic solid-state systems such as Josephson junctions and quantum dots feature robust control techniques using local electrical signals and self-evident scaling; however, in general the quantum states decohere rapidly. In contrast, quantum optical systems based on trapped ions and neutral atoms exhibit much better coherence properties, but their miniaturization and integration with electrical circuits remains a challenge. Here we describe methods for the integration of a single-particle system - an isolated polar molecule - with mesoscopic solid-state devices in a way that produces robust, coherent, quantum-level control. Our setup provides a scalable cavity-QED-type quantum computer architecture, where entanglement of distant qubits stored in long-lived rotational molecular states is achieved via exchange of microwave photons.