Generation of high-purity telecom-band entangled photon pairs in dispersion-shifted fiber

被引：94

作者：

Lee, KF ^{[1
]}

Chen, J ^{[1
]}

Liang, C ^{[1
]}

Li, XY ^{[1
]}

Voss, PL ^{[1
]}

Kumar, P ^{[1
]}

机构：

[1] Northwestern Univ, Ctr Photon Commun & Comp, Dept Elect Engn & Comp Sci, Evanston, IL 60208 USA

来源：

OPTICS LETTERS | 2006年 / 31卷 / 12期

关键词：

D O I：

10.1364/OL.31.001905

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the purity of correlated photon pairs generated in a dispersion-shifted fiber at various temperatures. The ratio of coincidence to accidental-coincidence counts greater than 100 can be obtained as the fiber is cooled to liquid-nitrogen temperature (77 K). We then generate polarization-entangled photon pairs by using a compact counterpropagating scheme. Two-photon interference with visibility > 98% and Bell's inequality violation by > 8 standard deviations of measurement uncertainty are observed at 77K, without subtracting the accidental-coincidence counts due to background Raman photons. (c) 2006 Optical Society of America

引用

页码：1905 / 1907

页数：3

共 14 条

[1] PROPOSED EXPERIMENT TO TEST LOCAL HIDDEN-VARIABLE THEORIES [J].

CLAUSER, JF ;

HORNE, MA ;

SHIMONY, A ;

HOLT, RA .

PHYSICAL REVIEW LETTERS, 1969, 23 (15) :880-&

[2] Generation of correlated photon pairs in a microstructure fiber [J].

Fan, J ;

Dogariu, A ;

Wang, LJ .

OPTICS LETTERS, 2005, 30 (12) :1530-1532

[3] All-fiber photon-pair source for quantum communications [J].

Fiorentino, M ;

Voss, PL ;

Sharping, JE ;

Kumar, P .

IEEE PHOTONICS TECHNOLOGY LETTERS, 2002, 14 (07) :983-985

[4]

Kumar P., 2005, U. S. Patent, Patent No. 6897434

[5] Temperature-dependent gain and noise in fiber Raman amplifiers [J].

Lewis, SAE ;

Chernikov, SV ;

Taylor, JR .

OPTICS LETTERS, 1999, 24 (24) :1823-1825

[6]

LI XF, IN PRESS PHYS REV A

[7] Storage and long-distance distribution of telecommunications-band polarization entanglement generated in an optical fiber [J].

Li, XY ;

Voss, PL ;

Chen, J ;

Sharping, JE ;

Kumar, P .

OPTICS LETTERS, 2005, 30 (10) :1201-1203

[8] Optical-fiber source of polarization-entangled photons in the 1550 nm telecom band [J].

Li, XY ;

Voss, PL ;

Sharping, JE ;

Kumar, P .

PHYSICAL REVIEW LETTERS, 2005, 94 (05)

[9] Measurement of co- and cross-polarized Raman spectra in silica fiber for small detunings [J].

Li, XY ;

Voss, PL ;

Chen, J ;

Lee, KF ;

Kumar, P .

OPTICS EXPRESS, 2005, 13 (06) :2236-2244

[10] All-fiber photon-pair source for quantum communications: Improved generation of correlated photons [J].

Li, XY ;

Chen, J ;

Voss, P ;

Sharping, J ;

Kumar, P .

OPTICS EXPRESS, 2004, 12 (16) :3737-3744

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