On the Teleportation of Continuous Variable

Details On the Teleportation of Continuous Variable On the Teleportation of Continuous Variable

1999-06-04

arxiv.org/abs/quant-ph/9906018v1

J.Exp.Theor.Phys. 89 (1999) 413-420; Zh.Eksp.Teor.Fiz. 116 (1999) 777-792

Physics

Quantum Physics

13 pages, no figures. To be published in JETP

Scientific paper

10.1134/1.558998

The measurement procedures used in quantum teleportation are analyzed from the viewpoint of the general theory of quantum-mechanical measurements. It is shown that to find the teleported state one should only know the identity resolution (positive operator-valued measure) generated by the corresponding instrument (quantum operation describing the system state change caused by the measurement) rather than the instrument itself. A quantum teleportation protocol based on a measurement associated with a non-orthogonal identity resolution is proposed for a system with non-degenerate continuous spectrum.

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