Teleportation of quantum gates is a critical step for the implementation of quantum networking and teleportation-based models of quantum computation. We report an experimental demonstration of teleportation of the prototypical quantum controlled-NOT (CNOT) gate. Assisted with linear optical manipulations, photon entanglement produced from parametric down-conversion, and postselection from the c...

We show how to teleport reliably an arbitrary superposition of n = 0 and n = 1 vibrational number state between two distant ions. This is done by first mapping the vibrational state to be teleported into the internal degrees of freedom of a given ion. Then we handle with the internal superposition state following Bennett’s original protocol and a recently proposed technique for teleportation of...

We present a dynamic logic for reasoning about information flow in quantum programs. In particular, we give a finitary syntax and a relational semantics for a Logic of Quantum Programs (LQP ), that is capable of dealing with quantum measurements, unitary evolutions and entanglements in compound quantum systems. We present a sound proof system for this logic, and we show how to characterize by l...

We consider the implementation of an arbitrary unitary operation U upon a distant quantum system. This teleportation of U can be viewed as a quantum remote control. We investigate protocols which achieve this using local operations , classical communication and shared entanglement (LOCCSE). Lower bounds on the necessary entanglement and classical communication are determined using causality and...

Teleportation of finite dimensional quantum states by a non-local entangled state is studied. For a generally given entangled state, an explicit equation that governs the teleportation is presented. Detailed examples and the roles played by the dimensions of the Hilbert spaces related to the sender, receiver and the auxiliary space are discussed. PACS numbers: 03.67.-a, 89.70.+c, 03.65.-w AMS c...

A quantum communication system is proposed that uses polarization-entangled photons and trapped-atom quantum memories. This system is capable of long-distance, highfidelity teleportation, and long-duration quantum storage.

We present a model of quantum teleportation protocol based on one-dimensional quantum dots system. Three quantum dots with three electrons are used to perform teleportation, the unknown qubit is encoded using one electron spin on quantum dot A, the other two dots B and C are coupled to form a mixed space-spin entangled state. By choosing the Hamiltonian for the mixed space-spin entangled system...

In the original one-to-one teleportation protocol of Bennett et al. [1], an observer Alice transmits the information of a d-level system to another observer Bob with perfect ˇdelity, by using a maximally entangled state. We introduce a generalization called the many-to-many teleportation, where the information is sent from N observers to M receivers situated at different locations. One of the m...