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Quantum coherence in a single-Cooper-pair box: experiments in the frequency and time domains

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Quantum coherence in a single-Cooper-pair box: experiments in the frequency and time domains. / Nakamura, Y; Pashkin, Yu.A; Tsai, J.S.
In: Physica B: Condensed Matter, Vol. 280, No. 1, 11.05.2000, p. 405-409.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Nakamura, Y, Pashkin, YA & Tsai, JS 2000, 'Quantum coherence in a single-Cooper-pair box: experiments in the frequency and time domains', Physica B: Condensed Matter, vol. 280, no. 1, pp. 405-409. https://doi.org/10.1016/S0921-4526

APA

Nakamura, Y., Pashkin, Y. A., & Tsai, J. S. (2000). Quantum coherence in a single-Cooper-pair box: experiments in the frequency and time domains. Physica B: Condensed Matter, 280(1), 405-409. https://doi.org/10.1016/S0921-4526

Vancouver

Nakamura Y, Pashkin YA, Tsai JS. Quantum coherence in a single-Cooper-pair box: experiments in the frequency and time domains. Physica B: Condensed Matter. 2000 May 11;280(1):405-409. doi: 10.1016/S0921-4526

Author

Nakamura, Y ; Pashkin, Yu.A ; Tsai, J.S. / Quantum coherence in a single-Cooper-pair box : experiments in the frequency and time domains. In: Physica B: Condensed Matter. 2000 ; Vol. 280, No. 1. pp. 405-409.

Bibtex

@article{26a74e57dd42434a8d7b45c3a532ba41,
title = "Quantum coherence in a single-Cooper-pair box: experiments in the frequency and time domains",
abstract = "In a small superconducting electrode connected to a reservoir via a Josephson junction, we can realize an artificial two-level system in which two charge-number states of the electrode are coupled by Cooper-pair tunneling. We have investigated quantum coherence in the two-level system through two complementary experiments: (i) photon-assisted Cooper-pair-tunneling spectroscopy of the energy-level splitting in the frequency domain, and (ii) pulsed-gate control of the quantum state to observe the coherent oscillations in the time domain. Our results demonstrate the existence and the persistence of the coherence for at least ∼30 cycles of the oscillation.",
keywords = "Coherent oscillations, Energy-level splitting, Josephson junction, Two-level system",
author = "Y Nakamura and Yu.A Pashkin and J.S Tsai",
year = "2000",
month = may,
day = "11",
doi = "10.1016/S0921-4526",
language = "English",
volume = "280",
pages = "405--409",
journal = "Physica B: Condensed Matter",
issn = "0921-4526",
publisher = "ELSEVIER SCIENCE BV",
number = "1",

}

RIS

TY - JOUR

T1 - Quantum coherence in a single-Cooper-pair box

T2 - experiments in the frequency and time domains

AU - Nakamura, Y

AU - Pashkin, Yu.A

AU - Tsai, J.S

PY - 2000/5/11

Y1 - 2000/5/11

N2 - In a small superconducting electrode connected to a reservoir via a Josephson junction, we can realize an artificial two-level system in which two charge-number states of the electrode are coupled by Cooper-pair tunneling. We have investigated quantum coherence in the two-level system through two complementary experiments: (i) photon-assisted Cooper-pair-tunneling spectroscopy of the energy-level splitting in the frequency domain, and (ii) pulsed-gate control of the quantum state to observe the coherent oscillations in the time domain. Our results demonstrate the existence and the persistence of the coherence for at least ∼30 cycles of the oscillation.

AB - In a small superconducting electrode connected to a reservoir via a Josephson junction, we can realize an artificial two-level system in which two charge-number states of the electrode are coupled by Cooper-pair tunneling. We have investigated quantum coherence in the two-level system through two complementary experiments: (i) photon-assisted Cooper-pair-tunneling spectroscopy of the energy-level splitting in the frequency domain, and (ii) pulsed-gate control of the quantum state to observe the coherent oscillations in the time domain. Our results demonstrate the existence and the persistence of the coherence for at least ∼30 cycles of the oscillation.

KW - Coherent oscillations

KW - Energy-level splitting

KW - Josephson junction

KW - Two-level system

U2 - 10.1016/S0921-4526

DO - 10.1016/S0921-4526

M3 - Journal article

VL - 280

SP - 405

EP - 409

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

IS - 1

ER -