Readout methods and devices for Josephson-junction-based solid-state qubits

被引：31

作者：

Johansson, G. ^{[1
]}

Tornberg, L. ^{[1
]}

Shumeiko, V. S. ^{[1
]}

Wendin, G. ^{[1
]}

机构：

[1] Chalmers Univ Technol, Dept Microtechnol & Nanosci, SE-41296 Gothenburg, Sweden

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2006年 / 18卷 / 21期

关键词：

D O I：

10.1088/0953-8984/18/21/S14

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We discuss the current situation concerning measurement and readout of Josephson-junction based qubits. In particular, we focus attention on dispersive low-dissipation techniques involving reflection of radiation from an oscillator circuit coupled to a qubit, allowing single-shot determination of the state of the qubit. In particular, we develop a formalism describing a charge qubit read out by measuring its effective (quantum) capacitance. To exemplify, we also give explicit formulas for the readout time.

引用

页码：S901 / S920

页数：20

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