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A new method is produced of directly measuring EPR beams. This measurement scheme can be used for measuring the correlation degree of EPR beams with correlated amplitude quadratures and anticorrelated phase quadratures without using local oscillators. Then a new scheme for quantum dense coding is proposed based on this measurement scheme.
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Keywords:
- entanglement /
- Bell state /
- squeezing
[1] Braunstein S L, Loock P V 2005 Rev. Mod. Phys. 77 513
[2] Ren J G, Yang B, Yi Z, Zhou F, Chen K, Peng C Z, Pan J W 2009 Chin. Phys. B 18 1674
[3] Furusawa A, Srensen J L, Braunstein S L, Fuchs C A, Kimble H J, Polzik E S 1998 Science 282 706
[4] Zhang J, Peng K C 2000 Phys. Rev. A 62 064302
[5] Li X Y, Pan Q, Jing J T, Zhang J, Xie C D, Peng K C 2002 Phys. Rev. Lett. 88 047904
[6] Vahlbruch H, Mehmet M, Chelkowski S, Hage B, Franzen A, Lastzka N, Gossler S, Danzmann K, Schnabel R 2008 Phys. Rev. Lett. 100 033602
[7] Zhang Y, Wang H, Li X Y, Jing J T, Xie C D, Peng K C 2000 Phys. Rev. A 62 023813
[8] Zhang Y, Su H, Xie C D, Peng K C 1999 Phys. Lett. A 259 171
[9] Fabre C, Giacobino E, Heidmann A, Reynaud S 1989 J. Phys. (France) 50 1209
[10] Villar A S, Cruz L S, Cassemiro K N, Martinelli M, Nussenzveig P 2005 Phys. Rev. Lett. 95 243603
[11] Su X L, Tan A H, Jia X J, Pan Q, Xie C D, Peng K C 2006 Opt. Lett. 31 1133
[12] Zhang Y, Zhang T C, Li T Y, Xie C D 2000 Acta Optica Sinica 20 465 (in Chinese) [张 云、 张天才、 李廷鱼、 谢常德 2000 光学学报 20 465]
[13] Wang D, Shang Y N, Jia X J, Xie C D, Peng K C 2008 J. Phys. B: At. Mol. Opt. Phys. 41 035502
[14] Wang D, Shang Y N, Yan Z H, Wang W Z, Jia X J, Xie C D, Peng K C 2008 Europhys. Lett. 82 24003
[15] Glckl O, Andersen U L, Lorenz S, Silberhorn Ch, Korolkova N, Leuchs G 2004 Opt. Lett. 29 1936
[16] Shang Y N, Wang D, Yan Z H, Wang W Z, Jia X J Peng K C 2008 Acta Phys. Sin. 57 3514 (in Chinese) [商娅娜、王 东、闫智辉、王文哲、贾晓军、彭堃墀 2008 物理学报 57 3514]
[17] Laurat J, Longchambon L, Fabre C, Coudreau T 2005 Opt. Lett. 30 1177
[18] Keller G, Auria VD, Treps N, Coudreau T, Laurat J, Fabre C 2008 Opt. Express 16 9351
[19] Li Y M, Fan Q Y, Zhang K S, Xie C D, Peng K C 2001 Acta Phys. Sin. 50 1493 (in Chinese) [李永民、 樊巧云、 张宽收、 谢常德、 彭堃墀 2001 物理学报 50 1493]
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[1] Braunstein S L, Loock P V 2005 Rev. Mod. Phys. 77 513
[2] Ren J G, Yang B, Yi Z, Zhou F, Chen K, Peng C Z, Pan J W 2009 Chin. Phys. B 18 1674
[3] Furusawa A, Srensen J L, Braunstein S L, Fuchs C A, Kimble H J, Polzik E S 1998 Science 282 706
[4] Zhang J, Peng K C 2000 Phys. Rev. A 62 064302
[5] Li X Y, Pan Q, Jing J T, Zhang J, Xie C D, Peng K C 2002 Phys. Rev. Lett. 88 047904
[6] Vahlbruch H, Mehmet M, Chelkowski S, Hage B, Franzen A, Lastzka N, Gossler S, Danzmann K, Schnabel R 2008 Phys. Rev. Lett. 100 033602
[7] Zhang Y, Wang H, Li X Y, Jing J T, Xie C D, Peng K C 2000 Phys. Rev. A 62 023813
[8] Zhang Y, Su H, Xie C D, Peng K C 1999 Phys. Lett. A 259 171
[9] Fabre C, Giacobino E, Heidmann A, Reynaud S 1989 J. Phys. (France) 50 1209
[10] Villar A S, Cruz L S, Cassemiro K N, Martinelli M, Nussenzveig P 2005 Phys. Rev. Lett. 95 243603
[11] Su X L, Tan A H, Jia X J, Pan Q, Xie C D, Peng K C 2006 Opt. Lett. 31 1133
[12] Zhang Y, Zhang T C, Li T Y, Xie C D 2000 Acta Optica Sinica 20 465 (in Chinese) [张 云、 张天才、 李廷鱼、 谢常德 2000 光学学报 20 465]
[13] Wang D, Shang Y N, Jia X J, Xie C D, Peng K C 2008 J. Phys. B: At. Mol. Opt. Phys. 41 035502
[14] Wang D, Shang Y N, Yan Z H, Wang W Z, Jia X J, Xie C D, Peng K C 2008 Europhys. Lett. 82 24003
[15] Glckl O, Andersen U L, Lorenz S, Silberhorn Ch, Korolkova N, Leuchs G 2004 Opt. Lett. 29 1936
[16] Shang Y N, Wang D, Yan Z H, Wang W Z, Jia X J Peng K C 2008 Acta Phys. Sin. 57 3514 (in Chinese) [商娅娜、王 东、闫智辉、王文哲、贾晓军、彭堃墀 2008 物理学报 57 3514]
[17] Laurat J, Longchambon L, Fabre C, Coudreau T 2005 Opt. Lett. 30 1177
[18] Keller G, Auria VD, Treps N, Coudreau T, Laurat J, Fabre C 2008 Opt. Express 16 9351
[19] Li Y M, Fan Q Y, Zhang K S, Xie C D, Peng K C 2001 Acta Phys. Sin. 50 1493 (in Chinese) [李永民、 樊巧云、 张宽收、 谢常德、 彭堃墀 2001 物理学报 50 1493]
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