Direct observation of Josephson capacitance -: art. no. 206806

被引：91

作者：

Sillanpää, MA ^{[1
]}

Lehtinen, T

Paila, A

Makhlin, Y

Roschier, L

Hakonen, PJ

机构：

[1] Aalto Univ, Low Temp Lab, FIN-02015 Helsinki, Finland

[2] LD Landau Theoret Phys Inst, Moscow 119334, Russia

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.95.206806

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effective capacitance has been measured in the split Cooper-pair box (CPB) over its phase-gate bias plane. Our low-frequency reactive measurement scheme allows us to probe purely the capacitive susceptibility due to the CPB band structure. The data are quantitatively explained using parameters determined independently by spectroscopic means. In addition, we show in practice that the method offers an efficient way to do nondemolition readout of the CPB quantum state.

引用

页数：4

共 22 条

[1] Nonequilibrium quasiparticles and 2e periodicity in single-Cooper-pair transistors -: art. no. 066802 [J].

Aumentado, J ;

Keller, MW ;

Martinis, JM ;

Devoret, MH .

PHYSICAL REVIEW LETTERS, 2004, 92 (06)

[2]

Averin D. V., 1985, Soviet Physics - JETP, V61, P407

[3] Variable electrostatic transformer: Controllable coupling of two charge qubits [J].

Averin, DV ;

Bruder, C .

PHYSICAL REVIEW LETTERS, 2003, 91 (05) :570031-570034

[4] Cavity quantum electrodynamics for superconducting electrical circuits: An architecture for quantum computation [J].

Blais, A ;

Huang, RS ;

Wallraff, A ;

Girvin, SM ;

Schoelkopf, RJ .

PHYSICAL REVIEW A, 2004, 69 (06) :062320-1

[5] Charge transfer induced persistent current and capacitance oscillations [J].

Buttiker, M ;

Stafford, CA .

PHYSICAL REVIEW LETTERS, 1996, 76 (03) :495-498

[6] Observation of quantum capacitance in the cooper-pair transistor [J].

Duty, T ;

Johansson, G ;

Bladh, K ;

Gunnarsson, D ;

Wilson, C ;

Delsing, P .

PHYSICAL REVIEW LETTERS, 2005, 95 (20)

[7] Coherent dynamics of a Josephson charge qubit [J].

Duty, T ;

Gunnarsson, D ;

Bladh, K ;

Delsing, P .

PHYSICAL REVIEW B, 2004, 69 (14) :140503-1

[8]

Landau LD., 1960, Mechanics

[9] THEORY OF THE BLOCH-WAVE OSCILLATIONS IN SMALL JOSEPHSON-JUNCTIONS [J].

LIKHAREV, KK ;

ZORIN, AB .

JOURNAL OF LOW TEMPERATURE PHYSICS, 1985, 59 (3-4) :347-382

[10] Quantum-state engineering with Josephson-junction devices [J].

Makhlin, Y ;

Schön, G ;

Shnirman, A .

REVIEWS OF MODERN PHYSICS, 2001, 73 (02) :357-400

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