Communicating continuous quantum variables between different Lorentz frames

Details Communicating continuous quantum variables between different Lorentz frames Communicating continuous quantum variables between different Lorentz frames

2004-06-29

arxiv.org/abs/quant-ph/0406219v2

Quant. Inf. Comput. Vol. 5, 239-246 (2005)

Physics

Quantum Physics

4 pages, 1 figure

Scientific paper

We show how to communicate Heisenberg-limited continuous (quantum) variables between Alice and Bob in the case where they occupy two inertial reference frames that differ by an unknown Lorentz boost. There are two effects that need to be overcome: the Doppler shift and the absence of synchronized clocks. Furthermore, we show how Alice and Bob can share Doppler-invariant entanglement, and we demonstrate that the protocol is robust under photon loss.

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