Determination of relaxation time of a Josephson junction qubit

Physical Review B - Condensed Matter and Materials Physics

Volumn 70, Issue 14, 2004, Pages

  Dutta, S K ^a   Xu, H ^a   Berkley, A J ^a   Ramos, R C ^a   Gubrud, M A ^a   Anderson, J R ^a   Lobb, C J ^a   Wellstood, F C ^a  

^a Bldg 142   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; CALCULATION; DEVICE; ELECTRIC POTENTIAL; ENERGY; MOLECULAR DYNAMICS; QUANTUM THEORY; TEMPERATURE;

EID: 19944399715     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevB.70.140502     Document Type: Article

References (20)

1. R. F. Voss and R. A. Webb, Phys. Rev. Lett. 47, 265 (1981).
2. J. M. Martinis, M. H. Devoret, and J. Clarke, Phys. Rev. Lett. 55, 1543 (1985).
3. R. C. Ramos, M. A. Gubrud, A. J. Berkley, J. R. Anderson, C. J. Lobb, and F. C. Wellstood, IEEE Trans. Appl. Supercond. 11, 998 (2001).
4. Y. Yu, S. Han, X. Chu, S. Chu, and Z. Wang, Science 296, 889 (2002).
5. J. M. Martinis, S. Nam, J. Aumentado, and C. Urbina, Phys. Rev. Lett. 89, 117901 (2002).
6. A. J. Berkley, H. Xu, R. C. Ramos, M. A. Gubrud, F. W. Strauch, P. R. Johnson, J. R. Anderson, A. J. Dragt, C. J. Lobb, and F. C. Wellstood, Science 300, 1548 (2003).
7. A. J. Berkley, H. Xu, M. A. Gubrud, R. C. Ramos, J. R. Anderson, C. J. Lobb, and F. C. Wellstood, Phys. Rev. B 68, 060502(R) (2003).
8. K. M. Lang, S. Nam, J. Aumentado, C. Urbina, and J. M. Martinis, IEEE Trans. Appl. Supercond. 13, 989 (2003).
9. S. Han, Y. Yu, X. Chu, S. Chu, and Z. Wang, Science 293, 1457 (2001).
10. P. Silvestrini, V. G. Palmieri, B. Ruggiero, and M. Russo, Phys. Rev. Lett. 79, 3046 (1997).
11. B. Ruggiero, M. G. Castellano, G. Torrioli, C. Cosmelli, F. Chiarello, V. G. Palmieri, C. Granata, and P. Silvestrini, Phys. Rev. B 59, 177 (1999).
12. C. Cosmelli, P. Carelli, M. G. Castellano, F. Chiarello, G. Diambrini Palazzi, R. Leoni, and G. Torrioli, Phys. Rev. Lett. 82, 5357 (1999); S. Han and R. Rouse, ibid. 86, 4191 (2001).
13. C. Cosmelli, P. Carelli, M. G. Castellano, F. Chiarello, G. Diambrini Palazzi, R. Leoni, and G. Torrioli, Phys. Rev. Lett. 82, 5357 (1999); S. Han and R. Rouse, ibid. 86, 4191 (2001).
14. See, e.g., M. Tinkham, Introduction to Superconductivity, 2nd. ed. (McGraw-Hill, New York, 1996).
15. A. I. Larkin and Yu. N. Ovchinnikov, Zh. Eksp. Teor. Fiz. 91, 318 (1986) [Sov. Phys. JETP 64, 185 (1986)].
16. A. I. Larkin and Yu. N. Ovchinnikov, Zh. Eksp. Teor. Fiz. 91, 318 (1986) [Sov. Phys. JETP 64, 185 (1986)].
17. K. S. Chow, D. A. Browne, and V. Ambegaokar, Phys. Rev. B 37, 1624 (1988).
18. The junction was capacitively coupled to an identical junction, for use in two-qubit studies. This extra junction was kept out of resonance with the experimental junction for the duration of the present work, by fixing its bias current to zero, so that ΔE/h>20 GHz.
19. A. J. Berkley, H. Xu, M. A. Gubrud, R. C. Ramos, J. R. Anderson, C. J. Lobb, and F. C. Wellstood, IEEE Trans. Appl. Supercond. 13, 952 (2003).
20. T. A. Fulton and L. N. Dunkleberger, Phys. Rev. B 9, 4760 (1974).