Comprehensive test of entanglement for two-level systems via the indeterminacy relationship

被引:32
作者
Yu, SX [1 ]
Pan, JW
Chen, ZB
Zhang, YD
机构
[1] Univ Sci & Technol China, Dept Modern Phys, Hefei 230027, Peoples R China
[2] Univ Vienna, Inst Expt Phys, A-1090 Vienna, Austria
[3] CCAST, World Lab, Beijing 100080, Peoples R China
基金
中国国家自然科学基金;
关键词
D O I
10.1103/PhysRevLett.91.217903
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A 3-setting Bell-type inequality enforced by the indeterminacy relation of complementary local observables is proposed as an experimental test of 2-qubit entanglement. The proposed inequality has the advantage of being a sufficient and necessary criterion of separability. Therefore any entangled 2-qubit state cannot escape the detection by this kind of test. It turns out that the orientation of the local testing observables plays a crucial role in our perfect detection of entanglement.
引用
收藏
页数:4
相关论文
共 34 条
[1]  
Bell J. S., 1964, Physics Physique Fizika, V1, P195, DOI [DOI 10.1103/PHYSICSPHYSIQUEFIZIKA.1.195, 10.1103/Physics-PhysiqueFizika.1.195]
[2]   TELEPORTING AN UNKNOWN QUANTUM STATE VIA DUAL CLASSICAL AND EINSTEIN-PODOLSKY-ROSEN CHANNELS [J].
BENNETT, CH ;
BRASSARD, G ;
CREPEAU, C ;
JOZSA, R ;
PERES, A ;
WOOTTERS, WK .
PHYSICAL REVIEW LETTERS, 1993, 70 (13) :1895-1899
[3]   Experimental quantum teleportation [J].
Bouwmeester, D ;
Pan, JW ;
Mattle, K ;
Eibl, M ;
Weinfurter, H ;
Zeilinger, A .
NATURE, 1997, 390 (6660) :575-579
[4]  
CHEN ZB, QUANTPH0307143, P26607
[5]   PROPOSED EXPERIMENT TO TEST LOCAL HIDDEN-VARIABLE THEORIES [J].
CLAUSER, JF ;
HORNE, MA ;
SHIMONY, A ;
HOLT, RA .
PHYSICAL REVIEW LETTERS, 1969, 23 (15) :880-&
[6]   Bell-type inequalities to detect true n-body nonseparability -: art. no. 170405 [J].
Collins, D ;
Gisin, N ;
Popescu, S ;
Roberts, D ;
Scarani, V .
PHYSICAL REVIEW LETTERS, 2002, 88 (17) :1704051-1704054
[7]   Can quantum-mechanical description of physical reality be considered complete? [J].
Einstein, A ;
Podolsky, B ;
Rosen, N .
PHYSICAL REVIEW, 1935, 47 (10) :0777-0780
[8]   HIDDEN-VARIABLES, JOINT PROBABILITY, AND THE BELL INEQUALITIES [J].
FINE, A .
PHYSICAL REVIEW LETTERS, 1982, 48 (05) :291-295
[9]   BELL INEQUALITY HOLDS FOR ALL NON-PRODUCT STATES [J].
GISIN, N .
PHYSICS LETTERS A, 1991, 154 (5-6) :201-202
[10]   Bell inequality, Bell states and maximally entangled states for n qubits [J].
Gisin, N ;
Bechmann-Pasquinucci, H .
PHYSICS LETTERS A, 1998, 246 (1-2) :1-6