Sample and hold strategy for quantum measurements of Josephson charge qubits -: art. no. 020505

被引：3
|
作者：
Schöllmann, V
Ågren, P
Haviland, DB
Hansson, TH
Karlhede, A
机构：
[1] Royal Inst Technol, Stockholm Ctr Phys Astron & Biotechnol, S-10691 Stockholm, Sweden
[2] Univ Stockholm, Stockholm Ctr Phys Astron & Biotechnol, Dept Phys, S-10691 Stockholm, Sweden
来源：
PHYSICAL REVIEW B | 2002年 / 65卷 / 02期
关键词：
D O I：
10.1103/PhysRevB.65.020505
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present a design for a charge qubit, and an associated "quantum sample and hold" measurement scheme. Using arrays of superconducting. islands, connected by tunable tunnel junctions, we can "sample" the charge states by turning off the Josephson coupling, and then "hold" a Cooper pair on an island for a very long time. This allows for a slow readout using a conventional weakly coupled low-frequency single-electron transistor.
引用
收藏
页码：205051 / 205054
页数：4
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