| Title | Increasing Spectroscopic Coherence Times of a DC SQUID Phase Qubit by Operating Deeper in the Potential Well |
| Publication Type | Journal Article |
| Year of Publication | 2007 |
| Authors | R. M. Lewis, S. K. Dutta, T. A. Palomaki, B. K. Cooper, A. J. Przybysz, A. J. Dragt, J. R. Anderson, C. J. Lobb, and F. C. Wellstood |
| Journal | IEEE Transactions on Applied Superconductivity |
| Volume | 17 |
| Pagination | 101–104 |
| Date Published | jun |
| ISSN | 1051-8223 |
| Keywords | 2007, Multiple Fellows |
| Abstract | We present measurements of the spectroscopic coherence time, T2* of a Nb-AlOx-Nb dc SQUID phase qubit. T2* is calculated from the spectroscopic width of the |0rang to |1rang transition measured at 25 mK. We find that T2*increases at higher transition frequencies corresponding to measurements deeper in the potential well. The measured are consistent with root mean square current noise saturating at 4 nA. |
| URL | http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=4277555 |
