Classical teleportation is defined as a scenario where the sender is given the classical description of an arbitrary quantum state while the receiver simulates any measurement on it. This scenario is shown to be achievable by transmitting only a few classical bits if the sender and receiver initially share local hidden variables. Specifically, a communication of 2.19 bits is sufficient on avera...

In recent years quantum entanglement [1] has found many exciting applications which have considerable bearing on the emerging fields of quantum information [2] and quantum computing [3]. Two such key applications are quantum teleportation [4] and quantum secret sharing [9]. Quantum teleportation involves secure transfer of an unknown qubit from one place to another and in quantum secret sharing...

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 a single copy of a mixed state of two qubits and derive the optimal trace-preserving local operations assisted by classical communication such as to maximize the fidelity of teleportation that can be achieved with this state. These optimal local operations turn out to be implementable by one-way communication and always yield a teleportation fidelity larger than 2/3 if the original ...

This study reports an experimental realization of non-local classical optical correlation from the Bell's measurement used in tests of quantum non-locality. Based on such a classical Einstein-Podolsky-Rosen optical correlation, a classical analogy has been implemented to the true meaning of quantum teleportation. In the experimental teleportation protocol, the initial teleported information can...

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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...

We expose the information flow capabilities of pure bipartite entanglement as a theorem — which embodies the exact statement on the ‘seemingly acausal flow of information’ in protocols such as teleportation [14]. We use this theorem to redesign and analyze known protocols (e.g. logic gate teleportation [10] and entanglement swapping [15]) and show how to produce some new ones (e.g. parallel com...

In this paper, we theoretically realize bidirectional controlled quantum teleportation by using ten-qubit entangled state method. This paper uses a case to introduce the specific process of realizing teleportation: Alice sends an unknown four-qubit GHZ Bob, and Bob arbitrary three-qubit Alice. addition, Charlie controls transfer ensure integrity protocol. A channel is constructed used in paper....

We study the amount of classical communication needed for distributed quantum information processing. In particular, we introduce the concept of ”remote preparation” of a quantum state. Given an ensemble of states, Alice’s task is to help Bob in a distant laboratory to prepare a state of her choice. We find several examples of an ensemble with an entropy S where the remote preparation can be do...