Coherent oscillations in a Cooper-pair box

被引:27
作者
Choi, MS
Fazio, R
Siewert, J
Bruder, C
机构
[1] Univ Basel, Dept Phys & Astron, CH-4056 Basel, Switzerland
[2] Univ Catania, DMFCI, I-95125 Catania, Italy
[3] INFM, Unita Catania, Catania, Italy
[4] Korea Inst Adv Study, Seoul 130012, South Korea
来源
EUROPHYSICS LETTERS | 2001年 / 53卷 / 02期
关键词
D O I
10.1209/epl/i2001-00145-8
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
This paper is devoted to an analysis of the experiment by Nakamura et al. (Nature 398 (1999) 786) on the quantum state control in Josephson junctions devices. By considering the relevant processes involved in the detection of the charge state of the box and a realistic description of the gate pulse, we are able to analyze some aspects of the experiment (like the amplitude of the measurement current) in a quantitative way.
引用
收藏
页码:251 / 256
页数:6
相关论文
共 20 条
[11]   QUANTUM-MECHANICS VERSUS MACROSCOPIC REALISM - IS THE FLUX THERE WHEN NOBODY LOOKS [J].
LEGGETT, AJ ;
GARG, A .
PHYSICAL REVIEW LETTERS, 1985, 54 (09) :857-860
[12]   Josephson-junction qubits with controlled couplings [J].
Makhlin, Y ;
Schön, G ;
Shnirman, A .
NATURE, 1999, 398 (6725) :305-307
[13]   INFLUENCE OF CONTROLLED QUANTUM-MECHANICAL CHARGE AND PHASE FLUCTUATIONS ON JOSEPHSON TUNNELING [J].
MATTERS, M ;
ELION, WJ ;
MOOIJ, JE .
PHYSICAL REVIEW LETTERS, 1995, 75 (04) :721-724
[14]   Josephson persistent-current qubit [J].
Mooij, JE ;
Orlando, TP ;
Levitov, L ;
Tian, L ;
van der Wal, CH ;
Lloyd, S .
SCIENCE, 1999, 285 (5430) :1036-1039
[15]   Quantum coherence in a single-Cooper-pair box: experiments in the frequency and time domains [J].
Nakamura, Y ;
Pashkin, YA ;
Tsai, JS .
PHYSICA B, 2000, 280 (1-4) :405-409
[16]   Coherent control of macroscopic quantum states in a single-Cooper-pair box [J].
Nakamura, Y ;
Pashkin, YA ;
Tsai, JS .
NATURE, 1999, 398 (6730) :786-788
[17]  
NAKAMURA Y, COMMUNICATION
[18]   Quantum manipulations of small Josephson junctions [J].
Shnirman, A ;
Schon, G ;
Hermon, Z .
PHYSICAL REVIEW LETTERS, 1997, 79 (12) :2371-2374
[19]   COHERENT COOPER PAIR TUNNELING IN SYSTEMS OF JOSEPHSON-JUNCTIONS - EFFECTS OF QUASI-PARTICLE TUNNELING AND OF THE ELECTROMAGNETIC ENVIRONMENT [J].
VANDENBRINK, AM ;
ODINTSOV, AA ;
BOBBERT, PA ;
SCHON, G .
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1991, 85 (03) :459-467
[20]   COMBINED SINGLE-ELECTRON AND COHERENT-COOPER-PAIR TUNNELING IN VOLTAGE-BIASED JOSEPHSON-JUNCTIONS [J].
VANDENBRINK, AM ;
SCHON, G ;
GEERLIGS, LJ .
PHYSICAL REVIEW LETTERS, 1991, 67 (21) :3030-3033