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Pulse imaging and nonadiabatic control of solid-state artificial atoms

Source: Phys. Rev. B 80, 220506(R) (2010); doi:10.1103/PhysRevB.80.220506

Published 23 December 2009

KEYWORDS and PACS
Keywords
PACS
  • 03.67.Lx
    Quantum computation architectures and implementations
  • 32.80.Qk
    Coherent control of atomic interactions with photons
  • 78.70.Gq
    Microwave and radio-frequency interactions with condensed matter
  • 85.25.Cp
    Josephson devices
  • YEAR: 2009
PUBLICATION DATA
Publisher:
AIP is a member of CrossRef APS
Jonas Bylander,1 Mark S. Rudner,2,3 Andrey V. Shytov,4 Sergio O. Valenzuela,5 David M. Berns,1,2 Karl K. Berggren,6 Leonid S. Levitov,2 and William D. Oliver1,6
1Research Laboratory of Electronics, Massachusetts Institute of Technology (MIT), 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
2Department of Physics, Massachusetts Institute of Technology (MIT), 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
3Department of Physics, Harvard University, 17 Oxford Street, Cambridge, Massachusetts 02138, USA
4Department of Physics, University of Utah, Salt Lake City, Utah 84112, USA
5Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology (MIT), 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
6MIT Lincoln Laboratory, 244 Wood Street, Lexington, Massachusetts 02420, USA
Transitions in an artificial atom, driven nonadiabatically through an energy-level avoided crossing, can be controlled by carefully engineering the driving protocol. We have driven a superconducting persistent-current qubit with a large-amplitude radio-frequency field. By applying a biharmonic wave form generated by a digital source, we demonstrate a mapping between the amplitude and phase of the harmonics produced at the source and those received by the device. This allows us to image the actual wave form at the device. This information is used to engineer a desired time dependence, as confirmed by the detailed comparison with a simulation. ©2009 The American Physical Society
History: Received 25 December 2008; published 23 December 2009
Permalink: http://link.aps.org/abstract/PRB/v80/e220506
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