Sample and hold strategy for quantum measurements of Josephson charge qubits -: art. no. 020505

被引：3
|
作者：
Schöllmann, V
Ågren, P
Haviland, DB
Hansson, TH
Karlhede, A
机构：
[1] Royal Inst Technol, Stockholm Ctr Phys Astron & Biotechnol, S-10691 Stockholm, Sweden
[2] Univ Stockholm, Stockholm Ctr Phys Astron & Biotechnol, Dept Phys, S-10691 Stockholm, Sweden
来源：
PHYSICAL REVIEW B | 2002年 / 65卷 / 02期
关键词：
D O I：
10.1103/PhysRevB.65.020505
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present a design for a charge qubit, and an associated "quantum sample and hold" measurement scheme. Using arrays of superconducting. islands, connected by tunable tunnel junctions, we can "sample" the charge states by turning off the Josephson coupling, and then "hold" a Cooper pair on an island for a very long time. This allows for a slow readout using a conventional weakly coupled low-frequency single-electron transistor.
引用
收藏
页码：205051 / 205054
页数：4
相关论文
共 50 条
  • [21] Entanglement of remote atomic qubits -: art. no. 030405
    Matsukevich, DN
    Chanelière, T
    Jenkins, SD
    Lan, SY
    Kennedy, TAB
    Kuzmich, A
    PHYSICAL REVIEW LETTERS, 2006, 96 (03)
  • [22] Two superconducting phases in CeRh1-xIrxIn5 -: art. no. 020505
    Nicklas, M
    Sidorov, VA
    Borges, HA
    Pagliuso, PG
    Sarrao, JL
    Thompson, JD
    PHYSICAL REVIEW B, 2004, 70 (02) : 020505 - 1
  • [23] Nonlocality of cluster states of qubits -: art. no. 042325
    Scarani, V
    Acín, A
    Schenck, E
    Aspelmeyer, M
    PHYSICAL REVIEW A, 2005, 71 (04):
  • [24] The loss of fidelity due to quantum leakage for Josephson charge qubits
    Liang, XT
    Xiong, YJ
    MODERN PHYSICS LETTERS B, 2005, 19 (7-8): : 371 - 378
  • [25] Accuracy of circular polarization as a measure of spin polarization in quantum dot qubits -: art. no. 257901
    Pryor, CE
    Flatté, ME
    PHYSICAL REVIEW LETTERS, 2003, 91 (25)
  • [26] Quantum coherence and interaction-free measurements -: art. no. 060101
    Pötting, S
    Lee, ES
    Schmitt, W
    Rumyantsev, I
    Mohring, B
    Meystre, P
    PHYSICAL REVIEW A, 2000, 62 (06): : 060101 - 060101
  • [27] Measurements of 1/f noise in Josephson junctions at zero voltage:: Implications for decoherence in superconducting quantum bits -: art. no. 012510
    Mück, M
    Korn, M
    Mugford, CGA
    Kycia, JB
    Clarke, J
    APPLIED PHYSICS LETTERS, 2005, 86 (01) : 012510 - 1
  • [28] Direct observation of Josephson capacitance -: art. no. 206806
    Sillanpää, MA
    Lehtinen, T
    Paila, A
    Makhlin, Y
    Roschier, L
    Hakonen, PJ
    PHYSICAL REVIEW LETTERS, 2005, 95 (20)
  • [29] Magnetic properties of the intermediate state in small type-I superconductors -: art. no. 020505
    Hernández, AD
    Domínguez, D
    PHYSICAL REVIEW B, 2005, 72 (02):
  • [30] Controlled source of entangled photonic qubits -: art. no. 062311
    Saavedra, C
    Gheri, KM
    Törmä, P
    Cirac, JI
    Zoller, P
    PHYSICAL REVIEW A, 2000, 61 (06): : 13
12345