메뉴 건너뛰기




Volumn 78, Issue 10, 2008, Pages

Two-resonator circuit quantum electrodynamics: A superconducting quantum switch

Author keywords

[No Author keywords available]

Indexed keywords


EID: 52249089809     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.78.104508     Document Type: Article
Times cited : (176)

References (101)
  • 4
  • 15
    • 0037112028 scopus 로고    scopus 로고
    • SCIEAS 0036-8075 10.1126/science.1078446
    • H. Mabuchi and A. C. Doherty, Science SCIEAS 0036-8075 10.1126/science.1078446 298, 1372 (2002).
    • (2002) Science , vol.298 , pp. 1372
    • Mabuchi, H.1    Doherty, A.C.2
  • 26
  • 28
    • 27544445288 scopus 로고    scopus 로고
    • PHTOAD 0031-9228
    • J. Q. You and F. Nori, Phys. Today PHTOAD 0031-9228 58 (11), 42 (2005).
    • (2005) Phys. Today , vol.58 , Issue.11 , pp. 42
    • You, J.Q.1    Nori, F.2
  • 30
    • 52249110999 scopus 로고    scopus 로고
    • arXiv:cond-mat/0508729 (unpublished).
    • see also arXiv:cond-mat/0508729 (unpublished).
  • 32
    • 0038788090 scopus 로고    scopus 로고
    • edited by D. V. Averin, B. Ruggiero, and P. Silvestrini (Kluwer, New York
    • O. Buisson and F. W. J. Hekking, in Macroscopic Quantum Coherence and Computing, edited by, D. V. Averin,,, B. Ruggiero,, and, P. Silvestrini, (Kluwer, New York, 2001), pp. 137-146.
    • (2001) Macroscopic Quantum Coherence and Computing , pp. 137-146
    • Buisson, O.1    Hekking, F.W.J.2
  • 33
    • 4043178882 scopus 로고    scopus 로고
    • PLRAAN 1050-2947 10.1103/PhysRevA.67.042311
    • C. P. Yang, S.-I Chu, and S. Han, Phys. Rev. A PLRAAN 1050-2947 10.1103/PhysRevA.67.042311 67, 042311 (2003).
    • (2003) Phys. Rev. a , vol.67 , pp. 042311
    • Yang, C.P.1    Chu S.-I2    Han, S.3
  • 34
    • 0043206132 scopus 로고    scopus 로고
    • PRBMDO 0163-1829 10.1103/PhysRevB.67.224514
    • F. Plastina and G. Falci, Phys. Rev. B PRBMDO 0163-1829 10.1103/PhysRevB.67.224514 67, 224514 (2003).
    • (2003) Phys. Rev. B , vol.67 , pp. 224514
    • Plastina, F.1    Falci, G.2
  • 35
    • 0141728423 scopus 로고    scopus 로고
    • PRBMDO 0163-1829 10.1103/PhysRevB.68.064509
    • J. Q. You and F. Nori, Phys. Rev. B PRBMDO 0163-1829 10.1103/PhysRevB.68. 064509 68, 064509 (2003).
    • (2003) Phys. Rev. B , vol.68 , pp. 064509
    • You, J.Q.1    Nori, F.2
  • 36
    • 0346584381 scopus 로고    scopus 로고
    • JMOPEW 0950-0340 10.1080/09500340210133144
    • A. Messina, S. Maniscalco, and A. Napoli, J. Mod. Opt. JMOPEW 0950-0340 10.1080/09500340210133144 50, 1 (2003).
    • (2003) J. Mod. Opt. , vol.50 , pp. 1
    • Messina, A.1    Maniscalco, S.2    Napoli, A.3
  • 37
    • 33144485555 scopus 로고    scopus 로고
    • PLRAAN 1050-2947 10.1103/PhysRevA.73.022318
    • C. P. Sun, L. F. Wei, Yu Xi Liu, and F. Nori, Phys. Rev. A PLRAAN 1050-2947 10.1103/PhysRevA.73.022318 73, 022318 (2006).
    • (2006) Phys. Rev. a , vol.73 , pp. 022318
    • Sun, C.P.1    Wei, L.F.2    Liu Y. Xi3    Nori, F.4
  • 40
    • 35448959998 scopus 로고    scopus 로고
    • PELNFM 1386-9477 10.1016/j.physe.2007.05.014
    • M. Wubs, S. Kohler, and P. Hänggi, Physica E (Amsterdam) PELNFM 1386-9477 10.1016/j.physe.2007.05.014 40, 187 (2007).
    • (2007) Physica e (Amsterdam) , vol.40 , pp. 187
    • Wubs, M.1    Kohler, S.2    Hänggi, P.3
  • 45
    • 0042919238 scopus 로고    scopus 로고
    • PRLTAO 0031-9007 10.1103/PhysRevLett.91.057003
    • D. V. Averin and C. Bruder, Phys. Rev. Lett. PRLTAO 0031-9007 10.1103/PhysRevLett.91.057003 91, 057003 (2003).
    • (2003) Phys. Rev. Lett. , vol.91 , pp. 057003
    • Averin, D.V.1    Bruder, C.2
  • 53
    • 0000103660 scopus 로고
    • PLRAAN 1050-2947 10.1103/PhysRevA.29.1419
    • B. Yurke and J. S. Denker, Phys. Rev. A PLRAAN 1050-2947 10.1103/PhysRevA.29.1419 29, 1419 (1984).
    • (1984) Phys. Rev. a , vol.29 , pp. 1419
    • Yurke, B.1    Denker, J.S.2
  • 54
    • 1642270408 scopus 로고    scopus 로고
    • PRBMDO 0163-1829 10.1103/PhysRevB.69.064503
    • G. Burkard, R. H. Koch, and D. P. DiVincenzo, Phys. Rev. B PRBMDO 0163-1829 10.1103/PhysRevB.69.064503 69, 064503 (2004).
    • (2004) Phys. Rev. B , vol.69 , pp. 064503
    • Burkard, G.1    Koch, R.H.2    Divincenzo, D.P.3
  • 55
    • 28744446115 scopus 로고    scopus 로고
    • PRBMDO 0163-1829 10.1103/PhysRevB.71.144511
    • G. Burkard, Phys. Rev. B PRBMDO 0163-1829 10.1103/PhysRevB.71.144511 71, 144511 (2005).
    • (2005) Phys. Rev. B , vol.71 , pp. 144511
    • Burkard, G.1
  • 57
    • 52249112117 scopus 로고    scopus 로고
    • arXiv:cond-mat/0409626 (unpublished).
    • see arXiv:cond-mat/0409626 (unpublished).
  • 58
    • 34748905945 scopus 로고    scopus 로고
    • LTPHEG 1063-777X 10.1063/1.2780165
    • G. Wendin and V. S. Shumeiko, Low Temp. Phys. LTPHEG 1063-777X 10.1063/1.2780165 33, 724 (2007).
    • (2007) Low Temp. Phys. , vol.33 , pp. 724
    • Wendin, G.1    Shumeiko, V.S.2
  • 61
    • 52249117947 scopus 로고    scopus 로고
    • In two of our previous works (Refs.), we studied charge qubits in multiresonator systems. In that case, we performed numerical simulations to study the geometric first-order capacitance between two resonators [in a configuration similar to that of Fig. 1]. We found a scattering matrix element Sab-50 dB at approximately 4 GHz, which gives CAB =c=3× 10-3 CBB. Assuming CAQ ≈ CQB, we can easily compare c to the second-order cross capacitance between A and B and obtain c/ (C AQ 2 / CQQ) 0.9. For these calculations, we use CBB 2.2 pF, CAQ 22 fF, and CQQ 67 fF from Ref.. In particular, we find c7 fF and CAQ CQB / CQQ 7.5 fF. In this case, an example of third-order cross capacitance is CAQ CQB CBQ / CQQ CBB 76 aF, which is negligible.
    • In two of our previous works (Refs.), we studied charge qubits in multiresonator systems. In that case, we performed numerical simulations to study the geometric first-order capacitance between two resonators [in a configuration similar to that of Fig. 1]. We found a scattering matrix element Sab -50 dB at approximately 4 GHz, which gives CAB =c=3× 10-3 CBB. Assuming CAQ ≈ CQB, we can easily compare c to the second-order cross capacitance between A and B and obtain c/ (C AQ 2 / CQQ) 0.9. For these calculations, we use CBB 2.2 pF, CAQ 22 fF, and CQQ 67 fF from Ref.. In particular, we find c7 fF and CAQ CQB / CQQ 7.5 fF. In this case, an example of third-order cross capacitance is CAQ CQB CBQ / CQQ CBB 76 aF, which is negligible.
  • 67
    • 52249122892 scopus 로고    scopus 로고
    • In the definition of self-capacitance, we neglect the capacitance of the island itself because it is small compared to the other capacitances, Cisl min {Cga, 2 CJ, Cgb}.
    • In the definition of self-capacitance, we neglect the capacitance of the island itself because it is small compared to the other capacitances, Cisl min {Cga, 2 CJ, Cgb}.
  • 68
    • 52249090077 scopus 로고    scopus 로고
    • The remaining two interaction terms, when quantizing the ac excitations, result in a displacement-type operator (Ref.), which act on the two resonators' coordinates. These operators reduce to zero right at the charge degeneracy point (i.e., for ng dc =1/2). In general, these terms are small and can thus be neglected (Ref.).
    • The remaining two interaction terms, when quantizing the ac excitations, result in a displacement-type operator (Ref.), which act on the two resonators' coordinates. These operators reduce to zero right at the charge degeneracy point (i.e., for ng dc =1/2). In general, these terms are small and can thus be neglected (Ref.).
  • 71
    • 0037768775 scopus 로고    scopus 로고
    • PLRAAN 1050-2947 10.1103/PhysRevA.67.053801
    • C. Wildfeuer and D. H. Schiller, Phys. Rev. A PLRAAN 1050-2947 10.1103/PhysRevA.67.053801 67, 053801 (2003).
    • (2003) Phys. Rev. a , vol.67 , pp. 053801
    • Wildfeuer, C.1    Schiller, D.H.2
  • 73
    • 4744358554 scopus 로고    scopus 로고
    • EULEEJ 0295-5075 10.1209/epl/i2004-10144-3
    • Yu-xi Liu, L. F. Wei, and F. Nori, Europhys. Lett. EULEEJ 0295-5075 10.1209/epl/i2004-10144-3 67, 941 (2004).
    • (2004) Europhys. Lett. , vol.67 , pp. 941
    • Liu, Y.1    Wei, L.F.2    Nori, F.3
  • 76
    • 33745307086 scopus 로고    scopus 로고
    • PRLTAO 0031-9007 10.1103/PhysRevLett.96.246803
    • L. F. Wei, Yu-Xi Liu, and F. Nori, Phys. Rev. Lett. PRLTAO 0031-9007 10.1103/PhysRevLett.96.246803 96, 246803 (2006).
    • (2006) Phys. Rev. Lett. , vol.96 , pp. 246803
    • Wei, L.F.1    Liu, Y.2    Nori, F.3
  • 77
    • 26944466059 scopus 로고    scopus 로고
    • PLRAAN 1050-2947 10.1103/PhysRevA.71.063820
    • Yu-xi Liu, L. F. Wei, and F. Nori, Phys. Rev. A PLRAAN 1050-2947 10.1103/PhysRevA.71.063820 71, 063820 (2005).
    • (2005) Phys. Rev. a , vol.71 , pp. 063820
    • Liu, Y.1    Wei, L.F.2    Nori, F.3
  • 84
    • 52249115673 scopus 로고    scopus 로고
    • At the qubit degeneracy point, the scenario can be quite different and energy relaxation can become the dominating source of decoherence. However, qubit energy relaxation rates are typically 10 MHz in this situation. Thus, a reasonable operating time for the quantum switch is guaranteed.
    • At the qubit degeneracy point, the scenario can be quite different and energy relaxation can become the dominating source of decoherence. However, qubit energy relaxation rates are typically 10 MHz in this situation. Thus, a reasonable operating time for the quantum switch is guaranteed.
  • 93
    • 52249120181 scopus 로고    scopus 로고
    • However, in order to avoid unwanted reflections, all on-chip transmission lines connected to the resonators via the input and output capacitors have to be properly engineered to be 50 Ω matched.
    • However, in order to avoid unwanted reflections, all on-chip transmission lines connected to the resonators via the input and output capacitors have to be properly engineered to be 50 Ω matched.
  • 94
    • 52249088036 scopus 로고    scopus 로고
    • FASTHENRY, Inductance Analysis Program, RLE Computational Prototyping Group, Boston;
    • FASTHENRY, Inductance Analysis Program, RLE Computational Prototyping Group, Boston
  • 96
    • 52249088704 scopus 로고    scopus 로고
    • see also http://www.wrcad.com/freestuff.html
    • see also http://www.fastfieldsolvers.com and and http://www.wrcad.com/ freestuff.html
  • 98
    • 52249095997 scopus 로고    scopus 로고
    • Obviously, this does not mean that sharp edges of the microwave on-chip structures are needed (which would imply unwanted radiation effects). It only means that the lines of the two resonators have to rapidly depart from each other.
    • Obviously, this does not mean that sharp edges of the microwave on-chip structures are needed (which would imply unwanted radiation effects). It only means that the lines of the two resonators have to rapidly depart from each other.
  • 101
    • 52249097064 scopus 로고    scopus 로고
    • In all our calculations and simulations, for the permittivity of vacuum we use the standard value provided by the National Institute of Standards and Technology (NIST), retaining all given decimal digits. The same applies for all other fundamental physical constants, which can be found at
    • In all our calculations and simulations, for the permittivity of vacuum we use the standard value provided by the National Institute of Standards and Technology (NIST), retaining all given decimal digits. The same applies for all other fundamental physical constants, which can be found at http://physics.nist. gov/cuu/Constants/


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.