Quantum superposition of magnetic flux states in a superconducting loop

被引：0
作者：
Il'ichev, E. [1 ]
机构：
[1] Inst Photon Technol IPHT, D-07745 Jena, Germany
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2012年 / 324卷 / 21期
关键词：
Josephson effect; Flux quantization; Clockwise and anticlockwise supercurrent; Coherence; Coherent tunneling; Tank circuit; Coplanar waveguide resonator; TRANSITIONS; JUNCTIONS; QUBIT;
D O I：
10.1016/j.jmmm.2012.02.066
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Results of the recent experiments have clear and convincingly demonstrated that superconducting circuits with certain parameters can be in quantum superposition of macroscopically distinct states. This has important implications, for instance, for the quantum measurement theory, for the description of the interaction between light and matter as well as for implementation of new generation of quantum limited detectors and quantum information processing devices. Here both - basic ideas and practical realization of superconducting qubits - are discussed. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：3464 / 3466
页数：3
相关论文
共 13 条
[1]   Reading out the state inductively and microwave spectroscopy of an interferometer-type charge qubit -: art. no. 180501 [J].
Born, D ;
Shnyrkov, VI ;
Krech, W ;
Wagner, T ;
Il'ichev, E ;
Grajcar, M ;
Hübner, U ;
Meyer, HG .
PHYSICAL REVIEW B, 2004, 70 (18) :1-4
[2]   Possible implementation of adiabatic quantum algorithm with superconducting flux qubits [J].
Grajcar, M ;
Izmalkov, A ;
Il'ichev, E .
PHYSICAL REVIEW B, 2005, 71 (14)
[3]   Method for direct observation of coherent quantum oscillations in a superconducting phase qubit [J].
Greenberg, YS ;
Izmalkov, A ;
Grajcar, M ;
Il'ichev, E ;
Krech, W ;
Meyer, HG .
PHYSICAL REVIEW B, 2002, 66 (22) :1-5
[4]   Phase dependence of the Josephson current in inhomogeneous high-Tc grain-boundary junctions [J].
Il'ichev, E ;
Zakosarenko, V ;
Ijsselsteijn, RPJ ;
Hoenig, HE ;
Meyer, HG ;
Fistul, MV ;
Müller, P .
PHYSICAL REVIEW B, 1999, 59 (17) :11502-11505
[5]   Radio-frequency method for investigation of quantum properties of superconducting structures [J].
Il'ichev, E ;
Oukhanski, N ;
Wagner, T ;
Meyer, HG ;
Smirnov, AY ;
Grajcar, M ;
Izmalkov, A ;
Born, D ;
Krech, W ;
Zagoskin, A .
LOW TEMPERATURE PHYSICS, 2004, 30 (7-8) :620-628
[6]   Characterization of superconducting structures designed for qubit realizations [J].
Il'ichev, E ;
Wagner, T ;
Fritzsch, L ;
Kunert, J ;
Schultze, V ;
May, T ;
Hoenig, HE ;
Meyer, HG ;
Grajcar, M ;
Born, D ;
Krech, W ;
Fistul, MV ;
Zagoskin, AM .
APPLIED PHYSICS LETTERS, 2002, 80 (22) :4184-4186
[7]   Weak continuous measurements of multiqubits systems [J].
Il'ichev, E. ;
van der Ploeg, S. H. W. ;
Grajcar, M. ;
Meyer, H. -G. .
QUANTUM INFORMATION PROCESSING, 2009, 8 (2-3) :133-153
[8]  
Il'ichev E., 2004, FIZ NIZK TEMP, V30, P823
[9]   Environmentally decoupled sds-wave Josephson junctions for quantum computing [J].
Ioffe, LB ;
Geshkenbein, VB ;
Feigel'man, MV ;
Fauchère, AL ;
Blatter, G .
NATURE, 1999, 398 (6729) :679-681
[10]   Observation of macroscopic Landau-Zener transitions in a superconducting device [J].
Izmalkov, A ;
Grajcar, M ;
Il'Ichev, E ;
Oukhanski, N ;
Wagner, T ;
Meyer, HG ;
Krech, W ;
Amin, MHS ;
Van Den Brink, AM ;
Zagoskin, AM .
EUROPHYSICS LETTERS, 2004, 65 (06) :844-849
12