Magnetic flux in a mesoscopic SQUID controlled by nonclassical electromagnetic fields

被引：4

作者：

Dajka, Jerzy ^{[1
]}

Luczka, Jerzy ^{[1
]}

机构：

[1] Silesian Univ, Inst Phys, PL-40007 Katowice, Poland

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 17期

关键词：

Bell theorem; electromagnetic fields; fluctuations in superconductors; magnetic flux; quantum entanglement; quantum optics; SQUIDs; JOSEPHSON-PARAMETRIC-AMPLIFIER; PERSISTENT CURRENTS; JUNCTIONS; SUPERCURRENT; DYNAMICS; STATES; NOISE;

D O I：

10.1103/PhysRevB.80.174529

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We analyze SQUID coupled to a nonclassical electromagnetic field (NEM) and show that properties of the SQUID can be manipulated by a choice of a state of NEM. In particular, energy or fluctuations of magnetic flux threading the loop of the SQUID can be resolved into separate lines for each photon number state of one-mode NEM. The impact of two-mode NEM prepared in entangled Bell states is discussed. The findings suggest an experimental method of detection of photon states: the SQUID response is dependent on the number of photons in one-mode NEM and on the Bell states of a two-mode NEM.

引用

页数：6

共 27 条

[1]

Alicki R., 1987, Lecture Notes in Physics

[2]

Barone A., 1982, Physics and Applications of the Josephson Effect

[3] Coherent and collective quantum optical effects in mesoscopic systems [J].