Violation of Bell's inequality in Josephson phase qubits

Nature

Volumn 461, Issue 7263, 2009, Pages 504-506

  Ansmann, Markus ^a   Wang, H ^a   Bialczak, Radoslaw C ^a   Hofheinz, Max ^a   Lucero, Erik ^a   Neeley, M ^a   O'Connell, A D ^a   Sank, D ^a   Weides, M ^a   Wenner, J ^a   Cleland, A N ^a   Martinis, John M ^a  

^a UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

QUANTUM DOT;

CORRELATION; ELECTRIC FIELD; EXPERIMENTAL STUDY; MEASUREMENT METHOD; PARTICLE MOTION; QUANTUM MECHANICS; SPATIAL ANALYSIS; STATISTICAL ANALYSIS;

AMPLITUDE MODULATION; ARTICLE; PRIORITY JOURNAL; PROBABILITY; QUANTITATIVE ANALYSIS; QUANTUM MECHANICS; QUANTUM THEORY; SOLID STATE;

EID: 70349466477     PISSN: 00280836     EISSN: 14764687     Source Type: Journal    
DOI: 10.1038/nature08363     Document Type: Article

References (27)

1. Bell, J. On the Einstein-Podolsky-Rosen paradox. Physics 1, 195-200 (1964).
2. Roos, C. F. et al. Bell states of atoms with ultralong lifetimes and their tomographic state analysis. Phys. Rev. Lett. 92, 220402 (2004).
3. Kocher, C. A. & Commins, E. D. Polarization correlation of photons emitted in an atomic cascade. Phys. Rev. Lett. 18, 575 (1967).
4. Aspect, A. et al. Experimental tests of realistic local theories via Bell's theorem. Phys. Rev. Lett. 47, 460-463 (1981).
5. Devoret, M. H. & Martinis, J. M. Implementing qubits with superconducting integrated circuits. Quantum Inf. Process. 3, 163-203 (2004).
6. Martinis, J. Superconducting phase qubits. Quant. Inf. Process. 8, 81-103 (2009).
7. Clarke, J. & Wilhelm, F. K. Superconducting quantum bits. Nature 453, 1031-1042 (2008).
8. DiCarlo, L. et al. Demonstration of two-qubit algorithms with a superconducting quantum processor. Nature 460, 240-244 (2009).
9. Wei, L. F., Liu, Y. X., Storcz, M. J. & Nori, F. Macroscopic Einstein-Podolsky-Rosen pairs in superconducting circuits. Phys. Rev. A 73, 052307 (2006).
10. Clauser, J. F., Horne, M. A., Shimony, A. & Holt, R. A. Proposed experiment to test local hidden-variable theories. Phys. Rev. Lett. 23, 880-884 (1969).
11. Pearle, P. M. Hidden-variable example based upon data rejection. Phys. Rev. D 2, 1418-1425 (1970).
12. Einstein, A., Podolsky, B. & Rosen, N. Can the quantum-mechanical description of physical reality be considered complete? Phys. Rev. 47, 777-780 (1935).
13. Weihs, G., Jennewein, T., Simon, C., Weinfurter, H. & Zeilinger, A. Violation of Bell's inequality under strict Einstein locality conditions. Phys. Rev. Lett. 81, 5039-5043 (1998).
14. Rowe, M. A. et al. Experimental violation of a Bell's inequality with efficient detection. Nature 409, 791-794 (2001).
15. Matsukevich, D. N., Maunz, P., Moehring, D. L., Olmschenk, S. & Monroe, C. Bell inequalityviolationwithtworemoteatomicqubits.Phys. Rev.Lett.100,150404 (2008).
16. Sillanpaa, M. A., Park, J. I. & Simmonds, R. W. Coherent quantum state storage and transfer between two phase qubits via a resonant cavity. Nature 449, 438-442 (2007).
17. Majer, J. et al. Coupling superconducting qubits via a cavity bus. Nature 449, 443-447 (2007).
18. Lucero, E. et al. High-fidelity gates in a Josephson qubit. Phys. Rev. Lett. 100, 247001 (2008).
19. Steffen, M. et al. Measurement of the entanglement of two superconducting qubits via state tomography. Science 313, 1423-1425 (2006).
20. McDermott, R. et al. Simultaneous state measurement of coupled Josephson phase qubits. Science 307, 1299-1302 (2005).
21. Kofman, A. G. & Korotkov, A. N. Analysis of Bell inequality violation in superconducting phase qubits. Phys. Rev. B 77, 104502 (2008).
22. Cooper, K. B. et al. Observation of quantum oscillations between a Josephson phase qubit and a microscopic resonator using fast readout. Phys. Rev. Lett. 93, 180401 (2004).
23. Hofheinz, M. et al. Synthesizing arbitrary quantum states in a superconducting resonator. Nature 459, 546-549 (2004).
24. Hofheinz, M. et al. Generation of Fock states in a superconducting quantum circuit. Nature 454, 310-314 (2008).
25. Hill, S. & Wootters, W. K. Entanglement of a pair of quantum bits. Phys. Rev. Lett. 78, 5022-5025 (1997).
26. Bialczak, R. C. et al. 1/f flux noise in Josephson phase qubits. Phys. Rev. Lett. 99, 187006 (2007).
27. DiVincenzo, D. P. The physical implementation of quantum computation. Preprint at Æhttp://arxiv.org/abs/quant-ph/0002077æ (2000).