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Volumn 65, Issue 14, 2002, Pages 1-7

Decoherence and relaxation of a superconducting quantum bit during measurement

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EID: 85038347289     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.65.144516     Document Type: Article
Times cited : (7)

References (28)
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    • 0000842757 scopus 로고
    • S. Lloyd, Science 261, 1589 (1993);
    • (1993) Science , vol.261 , pp. 1589
    • Lloyd, S.1
  • 2
    • 0028269694 scopus 로고
    • ScienceS. Lloyd263, 695 (1994);
    • (1994) Science , vol.263 , pp. 695
    • Lloyd, S.1
  • 16
    • 16844373573 scopus 로고
    • We use the thermal escape rates to calculate the probabilities and histogram of switching; a detailed calculation of the escape rate near the thermal-to-quantum crossover temperature shows a very small difference
    • J. M. Martinis, M. H. Devoret, and J. Clarke, Phys. Rev. B 35, 4682 (1987). We use the thermal escape rates to calculate the probabilities and histogram of switching; a detailed calculation of the escape rate near the thermal-to-quantum crossover temperature shows a very small difference.
    • (1987) Phys. Rev. B , vol.35 , pp. 4682
    • Martinis, J.M.1    Devoret, M.H.2    Clarke, J.3
  • 19
    • 85038278465 scopus 로고    scopus 로고
    • Similar to the qubit’s intrinsic noise, the most significant noise on the inner oscillator comes from nuclear spins and flux fluctuation. As the size of the SQUID loop is of the same order as that of the qubit, the direct noise on the inner oscillator is of the same order as the direct noise on the qubit. When transferred to the qubit, this noise is reduced by a factor of (formula presented) and is negligible. The external oscillator is exposed to a much more noisy environment as it interacts directly with external electronics
    • Similar to the qubit’s intrinsic noise, the most significant noise on the inner oscillator comes from nuclear spins and flux fluctuation. As the size of the SQUID loop is of the same order as that of the qubit, the direct noise on the inner oscillator is of the same order as the direct noise on the qubit. When transferred to the qubit, this noise is reduced by a factor of (formula presented) and is negligible. The external oscillator is exposed to a much more noisy environment as it interacts directly with external electronics.
  • 25
    • 0004264796 scopus 로고    scopus 로고
    • edited by S. Reynaud, E. Giacobino, and J. Zinn-Justin, Elsevier Science, Amsterdam
    • M. H. Devoret, in Quantum Fluctuations, edited by S. Reynaud, E. Giacobino, and J. Zinn-Justin (Elsevier Science, Amsterdam, 1997).
    • (1997) Quantum Fluctuations
    • Devoret, M.H.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.