提出一种利用部分纠缠粒子对作为量子通道实现量子隐形传态的方案.在此方案中,若发送者施一旋转操作于被传态的粒子并对该粒子和她拥有的部分纠缠粒子对之一实施计算基测量,则该粒子所处的未知量子态被传送给接收者,其态的保真度为1,成功几率与部分纠缠粒子对的两个Schmidt系数有关.此方案可推广到隐形传送N粒子的未知量子态.
A scheme for teleporting an unknown quantum state via a partially entangled particle pair is proposed. We show that teleportation can be successful realized with unit fidelity but less than unit probability if the sender performs a rotational operation on the teleported qubit and then performs computation basis measurements on the teleported particle and the half of the entangled particle pair respectively. The probability of successful teleportation is determined by both Schmidt coefficients of the entangled pair. This method can be generalized to the teleportation of an arbitrary and unknown multi-qubit state.
参考文献
| [1] | Bennett C.H. et al. [J]. Teleporting an unknown quantum state via dual classical and Einstein-Podolsky-Rosen channels [J]. Phys. Rev. Lett., 1993, 70: 1895. |
| [2] | Bouwmeester D, Pan J W, Mattle K, et al. Experimental quantum teleportation [J]. Nature, 1997, 390: 575. |
| [3] | Li W L, et al. Probabilistic teleportation and entanglement matching [J]. Phys. Rev. A, 2000, 61: 034301. |
| [4] | Lu H. Probabilistic teleportation of the three-particle entangled state via entanglement swapping [J]. Chin. Phys.Lett., 2001, 18: 1004. |
| [5] | Lu H, Guo G C. Teleportation of the two-particle entangled state via entanglement swapping [J]. Phys. Lett. A,2000, 276: 209. |
| [6] | Gu Y J, et al. Probabilistic teleportation of an arbitrary two-particle state [J]. Chin. Phys. Lett., 2001, 18: 1543. |
| [7] | Ye L, Yao C M, Guo G C. Teleportation of a two-particle entangled state [J]. Chin. Phys., 2001, 10: 1001. |
| [8] | Chen L B. Teleportation of an arbitrary three-particle state [J]. Chin. Phys., 2002, 11: 999. |
| [9] | Mor T. TelePOVM-new faces of teleportation [OL], quant-ph/9608005; Mor T, Horodecki P. Teleportation via generalized measurements, and conclusive teleportation [OL]. quant-ph/9906039. |
| [10] | Agrawal P, Pati A K. Probabilistic quantum teleportation [OL]. quant-ph/0210004 |
| [11] | Bandyopadhyay S. Teleportation and secret sharing with pure entangled states [J]. Phys. Rev. A, 2000, 62:012308. |
| [12] | Vaidman L, Yoran N. Methods for reliable teleportation [J]. Phys. Rev. A, 1999, 59: 116. |
| [13] | @@Lu tkenhaus N,@@ et al.## Bell measurements for teleportation [J].$$ Phys. Rev. A,** 1999,)) 59:&& 3295; |
| [14] | Calsamiglia J, et al. Maximum efficiency of a linear-optical Bell-state analyzer [OL]. quant-ph/0007058 |
| [15] | Chefles A, Gilson C R, Barnett S M. Entanglement, information, and multiparticle quantum operations [J]. Phys.Rev. A, 2001, 63: 032314. |
| [16] | Grover L K. Quantum Telecomputation [OL]. quant-ph/9704012. |
| [17] | Cirac J I, et al. Distributed quantum computation over noisy channels [J]. Phys. Rev. A, 1999, 59: 064294. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%