Dance of the Photons: From Einstein to Quantum Teleportation

Mendel Sachs

Ping Koy Lam, Warwick P. Bowen, Timothy C. Ralph

Yu Guo, Xiaobing Luo

We propose protocols for quantum teleportation of superposed coherent states of atomic Bose—Einstein condensates. We use the photon entanglement states as the quantum channel, which makes it possible to realize the distant teleportation of atomic states. Two robust protocols are introduced: one is a single-photon scheme in which an entangled single-photon state serves as the quantum channel, and the other is a multi-photon scheme where an entangled coherent state of the probe lasers is used as the quantum channel.

Nicolás Brehm, Katrin Kroeger, Natascha Hedrich

Glen I. Harris, Warwick P. Bowen

Luiz Carlos Ryff

It is shown that quantum teleportation and entanglement swapping can be easily derived from Einstein-Podolsky-Rosen correlations and special relativity. This raises the question of what is really teleported in a teleportation experiment. It is also shown that the behavior of two photons that arrive together at a beam splitter can be seen as a particular case of a nonlocal effect in which they arrive ``together'' at two different beam splitters.