Quantum analysis of a linear dc SQUID mechanical displacement detector

被引：49

作者：

Blencowe, M. P. ^{[1
]}

Buks, E.

机构：

[1] Dartmouth Coll, Dept Phys & Astron, Hanover, NH 03755 USA

[2] Technion Israel Inst Technol, Dept Elect Engn, IL-32000 Haifa, Israel

来源：

PHYSICAL REVIEW B | 2007年 / 76卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.76.014511

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We provide a quantum analysis of a dc SQUID mechanical displacement detector within the subcritical Josephson current regime. A segment of the SQUID loop forms the mechanical resonator and motion of the latter is transduced inductively through changes in the flux threading the loop. Expressions are derived for the detector signal response and noise, which are used to evaluate the position and force detection sensitivity. We also investigate cooling of the mechanical resonator due to detector back reaction.

引用

页数：16

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