[3] FURU SAWA A,SORENSEN J L,BRAUNSTEIN S L,et al.Unconditional quantum teleportation[J].Science,1998,282(5389):706-709.
[4] BRAUNSTEIN S L,KIMBLE H J.Teleportation of continuous quantum variables[J].Phys Rev Lett,1998,80(4):869-872.
[5] LI X,PAN Q,JING J,et al.Quantum dense coding exploiting a bright einstein-podolsky-rosen beam[J].Phys Rev Lett,2002,88(4):047904-1-047904-4.
[6] JING J,ZHANG J,YAN Y,et al.Experimental demonstration of tripartite entanglement and controlled dense coding for continuous variables[J].Phys Rev Lett,2003,90(16):167903-1-167903-4.
[7] JIA X,SUN X,PAN Q,et al.Experimental demonstration of unconditional entanglement swapping for continuous variables[J].Phys Rev Lett,2004,93(25):250503-1-250503-4.
[8] OU Z Y,PEREIRA S F,KIMBLE H J,et al.Realization of the einstein-podolsky-rosen paradox for continuous variables[J].Phys Rev Lett,1992,68(25):3663-3666.
[9] AOKI T,TAKEI N,YONEZAWA H,et al.Experimental creation of a fully inseparable tripartite continuous-variable state[J].Phys Rev Lett,2003,91 (8):080404-1-080404-4.
[10] SIMON C,BOUWMEESTER D.Theory of an entanglement laser[J].Phys Rev Lett,2003,91(5):053601-1-053601-4.
[11] JOSSE V,DANTAN A,BRAMATI A,et al.Continuous variable entanglement using cold atoms[J].Phys Rev Lett,2001,92(12):123601-1-123601-4.
[12] SILBERHORN CH,LAM P K,WEIB O,et al.Generation of continuous variable einstein-podolsky-rosen entanglement via the kerr nonlinearity in an optical fiber[J].Phys Rev Lett,2001,86(9):4267-4270.
[13] LI G X,YANG Y P,ALLAART K,et al.Entanglement for excitons in two quantum dots in a cavity injected with squeezed vacuum[J].Phys Rev A,2004,69 (1):014301-1-014301-4.
[14] LI G X,WU S P,HUANG G M.Generation of entanglement and squeezing in the system of two ions trapped in a cavity[J].Phys Rev A,2005,71(6):063817-1-063817-9.
[15] PERINA J JR,PERINA J.Progress in optics ed E wolf[M].Amsterdam:Elsevier,2000:64-106.
[16] FIURASEK J,PERINA J.Coherence and statistics of photos and atoms ed perina[M].J New York:Wiley,2001:65-65.
[17] ASSANTO G,LAURETI-PALMA A,SIBILIA C,et al.AlL optical switching via second harmonic generation in a nonlinearly asymmetric directional coupler[J] Opt Commun,1994,110(5-6):599-603.
[19] YANG C C.All-optical ultrafast logic gates that use asymmetric nonlinear directional couplers[J].Opt Lett,1991,16 (21):1641-1643.
[20] PERINA J.Quantum-statistical properties of a nonlinear asymmetric directional coupler[J].J Mod Opt,1995,42(7):1517-1522.
[21] CHEFFES A,BARNETT S M.Quantum theory of two-mode nonlinear directional couplers[J].J Mod Opt,1996,43 (4):709-727.
[22] FIURASEK J,PERINA J.Substituting scheme for nonlinear couplers:a group approach[J].Phys Rev A,2000,62(3):033808-1-033808-13.
[23] OLSEN M K,DRUMMOND P D.Entanglement and the einstein-podolsky-rosen paradox with coupled intracavity optical down-converters[J].Phys Rev A,2005,71 (5):053803-1-053803-9.
[24] LEONSKI W,et al.Kerr non-linear coupler and entanglement[J].J Opt B:Quantum Semiclass Opt,2004,6(6):S37-S42.
[25] BARNETT S M,RADMORE P M.Methods in theoretical quantumn optics[M].Oxford:Clarendon Press,1997:125-125.
[26] PENG J S,LI G X.Introduction to modern quantum optics[M].Singapore:Word Scientific,1998:160-162.
[27] OLIVEIRA M C de.P-representable subset of all bipartite gaussian separable states[J].Phys Rev A,2004,70 (3):034303-1-034303-4.
[28] LI F L,LI H R.An intuitive expression for inseparability condition of a two-mode squeezed vacuum state in a thermal environment[J].Chinese Physics Letters,2004,21 (6):991-994.
[29] SIMON R.Peres-horodecki separability criterion for continuous variable systems[J].Phys Rev Lett,2000,84 (12):2726-2729.