Superconducting persistent-current qubit
Superconducting persistent-current qubit
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DOI：
10.1103/physrevb.60.15398
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发表时间：
1999-12-01
影响因子：
3.7
通讯作者：
Mazo, JJ
中科院分区：
文献类型：
--
作者：
Orlando, TP;Mooij, JE;Mazo, JJ
我们提出了一种超导量子比特的设计，它的两个状态具有相反符号的循环电流。该电路由三个纳米级铝约瑟夫森结组成，连接在超导环路中，并由磁场控制。该量子比特的优点是它对衬底中的背景电荷模式不敏感，两种状态下的通量：可以用超导量子干涉装置检测，并且可以用磁场操纵状态。本文还讨论了量子比特的耦合系统以及退相干的来源。[s0163 - 1829(99) 00746 - 8]。
We present the design of a superconducting qubit that has circulating currents of opposite sign as its two states. The circuit consists of three nanoscale aluminum Josephson junctions connected in a superconducting loop and controlled by magnetic fields. The advantages of this qubit are that it can be mode insensitive to background charges in the substrate, the flux in the two states: can be detected with a superconducting quantum interference device, and the states can he manipulated with magnetic fields. Coupled systems of qubits are also discussed as well as sources of decoherence. [S0163-1829(99)00746-8].