超导量子比特的耦合研究进展  

Progress of coupled superconducting qubits

作　　者：赵娜[1,2] 刘建设[1,2] 李铁夫[1,2] 陈炜[1,2] 

机构地区：[1]清华大学微电子学研究所,北京100084 [2]清华信息科学与技术国家实验室,北京100084

出　　处：《物理学报》2013年第1期6-20,共15页Acta Physica Sinica

基　　金：国家重点基础研究发展计划(批准号:2011CBA00304);国家自然科学基金(批准号:60836001)资助的课题~~

摘　　要：超导量子比特以其在可控性、低损耗以及可扩展性等方面的优势被认为是最有希望实现量子计算机的固态方式之一.量子比特之间的相干可控耦合是实现大规模的量子计算的必要条件.本文介绍了超导量子比特耦合方式的研究进展,包括利用电容或电感实现量子比特的局域耦合,着重介绍一维传输线谐振腔作为量子总线实现多个量子比特的可控耦合的电路量子电动力学体系,并对最新的三维腔与超导量子比特的耦合结构的研究进展进行了论述.对各种耦合体系的哈密顿量进行了比较详细的分析,并按照局域性和可控性对不同耦合机制进行了分类.Quantum system based on superconducting circuit is considered as one of the most promising schemes to realize quantum com- puters due to its controllability, low dissipation and scalability. To implement large scale quantum computation, coherent coupling between qubits is crucial for controlling and transferring quantum states. In this review paper, we summarize the progress of cou- pled superconducting qubits, including local coupling via capacitance or inductance, multiple qubits coherent interaction through one-dimensional resonator as circuit quantum electrodynamics, and superconducting qubits in a three-dimensional waveguide cavity. Hamiltonians of various coupling schemes are analyzed and classification of these coupling structures is summarized based on the coupling range and tunability.

关 键 词：量子计算 超导量子比特 腔量子电动力学 耦合 

分 类 号：O413.1[理学—理论物理]