Linear Optics Quantum Communication over Long Distances

Details Linear Optics Quantum Communication over Long Distances Linear Optics Quantum Communication over Long Distances

2002-02-07

arxiv.org/abs/quant-ph/0202040v2

Physics

Quantum Physics

4 pages, no figure; comments are welcome / with refs. added and other changes

Scientific paper

We propose a feasible scheme for teleporting an arbitrary polarization state or entanglement of photons by requiring only single-photon (SP) sources, simple linear optical elements and SP quantum non-demolition measurements. An unknown SP polarization state can be faithfully teleported either to a duplicate polarization state or to an entangled state. Our proposal can be used to implement long-distance quantum communication in a simple way. The scheme is within the reach of current technology and significantly simplifies the realistc implementation of long-distance high-fidelity quantum communication with photon qubits.

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