Effects of atmospheric turbulence on the entanglement of spatial two-qubit states

被引：50

作者：

Jha, Anand K. ^{[1
]}

Tyler, Glenn A. ^{[2
]}

Boyd, Robert W. ^{[1
]}

机构：

[1] Univ Rochester, Inst Opt, Rochester, NY 14627 USA

[2] Opt Sci Co, Anaheim, CA 92825 USA

来源：

PHYSICAL REVIEW A | 2010年 / 81卷 / 05期

关键词：

BELL INEQUALITY; QUANTUM; PROPAGATION; VIOLATION;

D O I：

10.1103/PhysRevA.81.053832

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the effects of atmospheric turbulence on the entanglement of spatial two-qubit states that are prepared using the signal and idler photons produced by parametric down-conversion. Such states are the basic ingredients of quantum information protocols and can be prepared, for example, by making down-converted photons pass through a pair of double-apertures. We make use of the Kolmogorov model for atmospheric turbulence and quantify the entanglement of the two-qubit state in terms of Wootters's concurrence. We restrict our analysis to the two-qubit states that can be represented by density matrices having only two nonzero diagonal elements.

引用

收藏

页数：4

相关论文

共 31 条

[1] COMMUNICATION VIA ONE-PARTICLE AND 2-PARTICLE OPERATORS ON EINSTEIN-PODOLSKY-ROSEN STATES [J].

BENNETT, CH ;

WIESNER, SJ .

PHYSICAL REVIEW LETTERS, 1992, 69 (20) :2881-2884

[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] Pulsed energy-time enangled twin-photon source for quantum communication [J].

Brendel, J ;

Gisin, N ;

Tittel, W ;

Zbinden, H .

PHYSICAL REVIEW LETTERS, 1999, 82 (12) :2594-2597

[4] Quantum repeaters:: The role of imperfect local operations in quantum communication [J].

Briegel, HJ ;

Dür, W ;

Cirac, JI ;

Zoller, P .

PHYSICAL REVIEW LETTERS, 1998, 81 (26) :5932-5935

[5] Practical free-space quantum key distribution over 1 km [J].

Buttler, WT ;

Hughes, RJ ;

Kwiat, PG ;

Lamoreaux, SK ;

Luther, GG ;

Morgan, GL ;

Nordholt, JE ;

Peterson, CG ;

Simmons, CM .

PHYSICAL REVIEW LETTERS, 1998, 81 (15) :3283-3286

[6] QUANTUM CRYPTOGRAPHY BASED ON BELL THEOREM [J].

EKERT, AK .

PHYSICAL REVIEW LETTERS, 1991, 67 (06) :661-663

[7] OPTICAL RESOLUTION THROUGH A RANDOMLY INHOMOGENEOUS MEDIUM FOR VERY LONG AND VERY SHORT EXPOSURES [J].

FRIED, DL .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 1966, 56 (10) :1372-&

[8] Vortex beam propagation through atmospheric turbulence and topological charge conservation [J].

Gbur, Greg ;

Tyson, Robert K. .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 2008, 25 (01) :225-230

[9] Free-space information transfer using light beams carrying orbital angular momentum [J].

Gibson, G ;

Courtial, J ;

Padgett, MJ ;

Vasnetsov, M ;

Pas'ko, V ;

Barnett, SM ;

Franke-Arnold, S .

OPTICS EXPRESS, 2004, 12 (22) :5448-5456

[10] Quantum cryptography [J].

Gisin, N ;

Ribordy, GG ;

Tittel, W ;

Zbinden, H .

REVIEWS OF MODERN PHYSICS, 2002, 74 (01) :145-195

← 1 2 3 4 →