Quantum teleportation requires 2 cbits to be sent from Alice to Bob in order to transmit an unknown qubit provided they share an entangled EPR pair. Classical teleportation requires 2.19 cbits to be sent from Alice to Bob in order to simulate a known qubit provided they share local hidden variables. We show that there is a simple scheme which requires 1 cbit to be sent from Alice to Bob for sim...

Both complete protocol and optical setup for experimental realization of quantum teleportation of unknown single-photon wave packet are proposed. Quantum mechanics prohibits cloning (copying) an unknown quantum state (no cloning theorem [1]). Is it possible to transmit to a distant user a previously unknown quantum state without sending that state itself? Strictly speaking, any measurement aime...

Quantum teleportation, the faithful transfer of an unknown input state onto a remote quantum system, is key component in long distance communication protocols and distributed computing. At same time, high frequency nano-optomechanical systems hold great promise as nodes future network, operating on-chip at low-loss optical telecom wavelengths with mechanical lifetimes. Recent demonstrations inc...

We report the experimental realization of the ”active” quantum teleportation (QST) of a one-particle entangled qubit. This demonstration completes the original QST protocol and renders it available for actual implementation in quantum computation networks. It is accomplished by implementing a 8m optical delay line and a single-photon triggered fast Electro-Optic Pockels cell. A large value of t...

We address the issue of totally teleporting the quantum state of an external particle, as opposed to studies on partial teleportation of external single-particle states, total teleportation of coherent states and encoded single-particle states, and intramolecular teleportation of nuclear spin states. We find a set of commuting observables whose measurement directly projects onto the Bell-basis ...

A scheme is proposed for simultaneous intraportation of many unknown quantum states within a quantum computing network. It is shown that our scheme, much different from the teleportation in the strict sense, can be very similar to the original teleportation proposal[Phys.Rev.Lett.70 (1993)1895)] and the efficiency of the scheme for quantum state transmission is very high. The possible applicati...

We report on a quantum optical experimental implementation of teleportation of unknown pure quantum states. This realizes all the nonlocal aspects of the original scheme proposed by Bennett et al. and is equivalent to it up to a local operation. We exhibit results for the teleportation of a linearly polarised state and of an elliptically polarised state. We show that the experimental results ca...