Diagnosis, prescription, and prognosis of a Bell-state filter by quantum process tomography

被引：90

作者：

Mitchell, MW

Ellenor, CW

Schneider, S

Steinberg, AM

机构：

[1] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada

[2] Univ Toronto, Dept Chem, Chem Phys Theory Grp, Toronto, ON M5S 3H6, Canada

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.91.120402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We apply the techniques of quantum process tomography to characterize errors and decoherence in a prototypical two-photon operation, a singlet-state filter. The quantum process tomography results indicate a large asymmetry in the process and also the required operation to correct for this asymmetry. We quantify residual errors and decoherence of the filtering operation after this modification.

引用

页码：120402 / 120402

页数：4

共 29 条

[1] Ancilla-assisted quantum process tomography [J].

Altepeter, JB ;

Branning, D ;

Jeffrey, E ;

Wei, TC ;

Kwiat, PG ;

Thew, RT ;

O'Brien, JL ;

Nielsen, MA ;

White, AG .

PHYSICAL REVIEW LETTERS, 2003, 90 (19) :4

[2] Experimental quantum teleportation [J].

Bouwmeester, D ;

Pan, JW ;

Mattle, K ;

Eibl, M ;

Weinfurter, H ;

Zeilinger, A .

NATURE, 1997, 390 (6660) :575-579

[3] Separability of very noisy mixed states and implications for NMR Quantum computing [J].

Braunstein, SL ;

Caves, CM ;

Jozsa, R ;

Linden, N ;

Popescu, S ;

Schack, R .

PHYSICAL REVIEW LETTERS, 1999, 83 (05) :1054-1057

[4] Realization of quantum process tomography in NMR [J].

Childs, AM ;

Chuang, IL ;

Leung, DW .

PHYSICAL REVIEW A, 2001, 64 (01) :123141-123147

[5] COMPLETELY POSITIVE LINEAR MAPS ON COMPLEX MATRICES [J].

CHOI, MD .

LINEAR ALGEBRA AND ITS APPLICATIONS, 1975, 10 (03) :285-290

[6]

Chuang IL, 1997, J MOD OPTIC, V44, P2455, DOI 10.1080/095003497152609

[7] Distributed entanglement [J].

Coffman, V ;

Kundu, J ;

Wootters, WK .

PHYSICAL REVIEW A, 2000, 61 (05) :5

[8]

*CVI LAS CORP, NONP PLAT BEAM SPLIT

[9]

DEMARTINI F, QUANTPH0207143

[10] QUANTUM COMPUTATION [J].

DIVINCENZO, DP .

SCIENCE, 1995, 270 (5234) :255-261

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