Quantum nondemolition measurements of a qubit

被引：37

作者：

Averin, DV ^{[1
]}

机构：

[1] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.88.207901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The concept of quantum nondemolition (QND) measurement is extended to coherent oscillations in an individual two-state system. Such a measurement enables direct observation of an intrinsic spectrum of these oscillations avoiding the detector-induced dephasing that affects the standard (non-QND) measurements. The suggested scheme can be realized in Josephson-junction qubits which combine flux and charge dynamics.

引用

页码：4 / 207901

页数：4

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