Quantum Logic Network for Probabilistic Teleportation of Two-Particle State of General Form
Gao Ting, Wang Zhi-xi, Yan Feng-li · 2003
A simplification scheme of probabilistic teleportation of two-particle state of general form is given. By means of the primitive operations consisting of single-qubit gates, two-qubit controlled-not gates, Von Neumann measurement and classically controlled operations, we construct an efficient quantum logical network for implementing the new scheme of probabilistic teleportation of a two-particle state of general form. PACS: 03.65.Bz, 03.67.Hk Quantum teleportation is one of the most striking progress of quantum information theory. 1 2,3 It will be useful in quantum computers. It can be used to transmit information reliably in noisy situations where a message would otherwise be degraded, and to transfer information from fleeting or hard-to-control carriers to particles more suitably for permanent storage. Moreover, it may have application in quantum cryptography and quantum dense coding. 4−8 In 1993, Bennett et al presented the theory of quantum teleportation which allows the transmission of an unknown qubit state from a sender ”Alice ” to a spatially distant receiver ”Bob” via a quantum channel with the aid of some classical communication. 1 Teleportation has drawn