Experimental investigation of quantum key distribution with position and momentum of photon pairs

被引：29

作者：

Almeida, MP ^{[1
]}

Walborn, SP ^{[1
]}

Ribeiro, PHS ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, Inst Fis, BR-21941972 Rio De Janeiro, Brazil

来源：

PHYSICAL REVIEW A | 2005年 / 72卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.72.022313

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We investigate the utility of Einstein-Podolsky-Rosen correlations of the position and momentum of photon pairs from parametric down-conversion in the implementation of a secure quantum key distribution protocol. We show that security is guaranteed by the entanglement between down-converted pairs, and can be checked by either direct comparison of Alice and Bob's measurement results or evaluation of an inequality of the sort proposed by Mancini [Phys. Rev. Lett. 88, 120401 (2002)].

引用

页数：7

共 22 条

[1]

ALMEIDA MP, QUANTPH0312134

[2]

Bennett C.H., 1984, P IEEE INT C COMP SY, P175, DOI DOI 10.1016/J.TCS.2014.05.025

[3] QUANTUM CRYPTOGRAPHY WITHOUT BELL THEOREM [J].

BENNETT, CH ;

BRASSARD, G ;

MERMIN, ND .

PHYSICAL REVIEW LETTERS, 1992, 68 (05) :557-559

[4]

BOUWMEESTER D, 2000, PHYS QUANTUM INFORMA

[5] Identifying entanglement using quantum ghost interference and imaging [J].

D'Angelo, M ;

Kim, YH ;

Kulik, SP ;

Shih, Y .

PHYSICAL REVIEW LETTERS, 2004, 92 (23) :233601-1

[6] Can quantum-mechanical description of physical reality be considered complete? [J].

Einstein, A ;

Podolsky, B ;

Rosen, N .

PHYSICAL REVIEW, 1935, 47 (10) :0777-0780

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

EKERT, AK .

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

[8] Characterizing the entanglement of bipartite quantum systems [J].

Giovannetti, V ;

Mancini, S ;

Vitali, D ;

Tombesi, P .

PHYSICAL REVIEW A, 2003, 67 (02) :5

[9] Quantum cryptography [J].

Gisin, N ;

Ribordy, GG ;

Tittel, W ;

Zbinden, H .

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

[10] Continuous variable quantum cryptography using coherent states [J].

Grosshans, F ;

Grangier, P .

PHYSICAL REVIEW LETTERS, 2002, 88 (05) :4

← 1 2 3 →