Synthesizing arbitrary quantum states in a superconducting resonator

Max Hofheinz, H. Wang, M. Ansmann, Radoslaw C. Bialczak, Erik Lucero, M. Neeley, A. D. O'Connell, D. Sank, J. Wenner, John M. Martinis and A. N. Cleland ()
Additional contact information
Max Hofheinz: University of California, Santa Barbara, California 93106, USA
H. Wang: University of California, Santa Barbara, California 93106, USA
M. Ansmann: University of California, Santa Barbara, California 93106, USA
Radoslaw C. Bialczak: University of California, Santa Barbara, California 93106, USA
Erik Lucero: University of California, Santa Barbara, California 93106, USA
M. Neeley: University of California, Santa Barbara, California 93106, USA
A. D. O'Connell: University of California, Santa Barbara, California 93106, USA
D. Sank: University of California, Santa Barbara, California 93106, USA
J. Wenner: University of California, Santa Barbara, California 93106, USA
John M. Martinis: University of California, Santa Barbara, California 93106, USA
A. N. Cleland: University of California, Santa Barbara, California 93106, USA

Nature, 2009, vol. 459, issue 7246, 546-549

Abstract: Super states The superposition principle is a fundamental tenet of quantum mechanics, allowing a quantum system to be 'in two places at the same time'. The preparation and use of superposed states forms the basis of quantum computation and simulation. Max Hofheinz and colleagues now demonstrate the technically challenging preparation and measurement of arbitrary quantum states in an electromagnetic resonator. States with different numbers of photons are superposed in a completely controlled and deterministic manner.

Date: 2009
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DOI: 10.1038/nature08005

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