Quantum deleting and signalling

Pati, Arun K. ; Braunstein, Samuel L. (2003) Quantum deleting and signalling Physics Letters A, 315 (3-4). pp. 208-212. ISSN 0375-9601

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/S0375-9601(03)01047-8


It is known that if one could clone an arbitrary quantum state then one could send signals faster than the speed of light. Here, we show that deletion of an unknown quantum state for which two copies are available would also lead to superluminal signalling. However, the (Landauer) erasure of an unknown quantum state does not allow faster-than-light communication.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Linearity; Cloning; Deleting; Signalling
ID Code:105103
Deposited On:09 Mar 2018 11:39
Last Modified:09 Mar 2018 11:39

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