Journal
PHYSICAL REVIEW B
Volume 81, Issue 17, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.81.174513
Keywords
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Funding
- National Security Agency
- Laboratory of Physical Sciences
- Army Research Office
- National Science Foundation [0726909]
- JSPS-RFBR [09-02-92114]
- RIKEN
- National Basic Research Program of China [2009CB929300]
- National Natural Science Foundation of China [10625416]
- ISTCP [2008DFA01930]
- Direct For Computer & Info Scie & Enginr
- Division of Computing and Communication Foundations [0726909] Funding Source: National Science Foundation
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We propose an experimental procedure to macroscopically test the Kochen-Specker theorem with superconducting qubits. This theorem, which has been experimentally tested with single photons and neutrons, elucidates the conflict between quantum mechanics and noncontextual hidden variable theories. Two Josephson charge qubits can be controllably coupled by using a two-level data bus built with a phase qubit. Then, by performing joint nondestructive quantum measurements of two distinct qubits, we show that the proposed circuits could demonstrate quantum contextuality at a macroscopic level.
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