Phys. Rev. B 67, 100508 (2003) [4 pages]Josephson-phase qubit without tunneling |
PRL Celebrates 50 Years
This Week's Milestone Letters are from 1973: |
M. H. S. Amin *, A. Yu. Smirnov †, and Alec Maassen van den Brink ‡
D-Wave Systems Inc., 320-1985 W. Broadway, Vancouver, British Columbia, Canada V6J 4Y3
Received 12 December 2002; published 31 March 2003
We show that a complete set of one-bit gates can be realized by coupling the two logical states of a phase qubit to a third level (at higher energy) using microwave pulses. Thus, one can achieve coherent control without invoking any tunneling between the qubit levels. We propose two implementations, using rf-SQUIDs and d-wave Josephson junctions.
©2003 The American Physical Society
URL: http://link.aps.org/abstract/PRB/v67/e100508
DOI: 10.1103/PhysRevB.67.100508
PACS: 03.67.Lx, 85.25.Cp, 85.25.Dq, 74.72.-h
* Electronic address: amin@dwavesys.com
† Electronic address: anatoly@dwavesys.com
‡ Corresponding author. Electronic address: alec@dwavesys.com
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