Conclusive quantum steering with superconducting transition-edge sensors

被引：208

作者：

Smith, Devin H. ^{[1
,2
,3
]}

Gillett, Geoff ^{[1
,2
,3
]}

de Almeida, Marcelo P. ^{[1
,2
,3
]}

Branciard, Cyril ^{[3
]}

Fedrizzi, Alessandro ^{[1
,2
,3
]}

Weinhold, Till J. ^{[1
,2
,3
]}

Lita, Adriana ^{[4
]}

Calkins, Brice ^{[4
]}

Gerrits, Thomas ^{[4
]}

Wiseman, Howard M. ^{[5
]}

Nam, Sae Woo ^{[4
]}

White, Andrew G. ^{[1
,2
,3
]}

机构：

[1] Univ Queensland, Ctr Engn Quantum Syst, Brisbane, Qld 4072, Australia

[2] Univ Queensland, Ctr Quantum Computat & Commun Technol, Australian Res Council, Brisbane, Qld 4072, Australia

[3] Univ Queensland, Sch Math & Phys, Brisbane, Qld 4072, Australia

[4] Natl Inst Stand & Technol, Boulder, CO 80305 USA

[5] Griffith Univ, Ctr Quantum Computat & Commun Technol, Australian Res Council, Ctr Quantum Dynam, Brisbane, Qld 4111, Australia

来源：

NATURE COMMUNICATIONS | 2012年 / 3卷

基金：

澳大利亚研究理事会;

关键词：

CURRENT SITUATION; BELLS-INEQUALITY; VIOLATION; ENTANGLEMENT;

D O I：

10.1038/ncomms1628

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Quantum steering allows two parties to verify shared entanglement even if one measurement device is untrusted. A conclusive demonstration of steering through the violation of a steering inequality is of considerable fundamental interest and opens up applications in quantum communication. To date, all experimental tests with single-photon states have relied on post selection, allowing untrusted devices to cheat by hiding unfavourable events in losses. Here we close this 'detection loophole' by combining a highly efficient source of entangled photon pairs with superconducting transition-edge sensors. We achieve an unprecedented similar to 62% conditional detection efficiency of entangled photons and violate a steering inequality with the minimal number of measurement settings by 48 s.d.s. Our results provide a clear path to practical applications of steering and to a photonic loophole-free Bell test.

引用

页数：6

共 36 条

[1] Violation of Bell's inequality in Josephson phase qubits [J].

Ansmann, Markus ;

Wang, H. ;

Bialczak, Radoslaw C. ;

Hofheinz, Max ;

Lucero, Erik ;

Neeley, M. ;

O'Connell, A. D. ;

Sank, D. ;

Weides, M. ;

Wenner, J. ;

Cleland, A. N. ;

Martinis, John M. .

NATURE, 2009, 461 (7263) :504-506

[2]

Bell J. S., 1964, Physics, V1, P195, DOI [10.1103/physicsphysiquefizika.1.195, DOI 10.1103/PHYSICSPHYSIQUEFIZIKA.1.195, 10.1103/Physics-PhysiqueFizika.1.195]

[3]

Bell J.S., 1993, Speakable and unspeakable in quantum mechanics: collected papers on quantum philosophy

[4]

Bennet A. J., 2011, ARBITRARILY LOSS TOL

[5] Optimal collinear Gaussian beams for spontaneous parametric down-conversion [J].

Bennink, Ryan S. .

PHYSICAL REVIEW A, 2010, 81 (05)

[6] Experimental investigation of criteria for continuous variable entanglement [J].

Bowen, WP ;

Schnabel, R ;

Lam, PK ;

Ralph, TC .

PHYSICAL REVIEW LETTERS, 2003, 90 (04)

[7]

Branciard C., 2011, ONE SIDED DEVICE IND

[8] Experimental criteria for steering and the Einstein-Podolsky-Rosen paradox [J].

Cavalcanti, E. G. ;

Jones, S. J. ;

Wiseman, H. M. ;

Reid, M. D. .

PHYSICAL REVIEW A, 2009, 80 (03)

[9] Spin entanglement, decoherence and Bohm's EPR paradox [J].

Cavalcanti, E. G. ;

Drummond, P. D. ;

Bachor, H. A. ;

Reid, M. D. .

OPTICS EXPRESS, 2009, 17 (21) :18693-18702

[10] EXPERIMENTAL CONSEQUENCES OF OBJECTIVE LOCAL THEORIES [J].

CLAUSER, JF ;

HORNE, MA .

PHYSICAL REVIEW D, 1974, 10 (02) :526-535

← 1 2 3 4 →