Quantum deleting and Signalling

Details Quantum deleting and Signalling Quantum deleting and Signalling

2003-05-23

arxiv.org/abs/quant-ph/0305145v1

Phys. Lett. A Vol 315, 208 (2003)

Physics

Quantum Physics

Latex file, 6 pages, no figures

Scientific paper

10.1016/S0375-9601(03)01047-8

It is known that if we can clone an arbitrary state we can send signal faster
than light. Here, we show that deletion of unknown quantum state against a copy
can lead to superluminal signalling. But erasure of unknown quantum state does
not imply faster than light signalling.

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