Probabilistic exact deletion and probabilistic no-signalling

In this work we show that one cannot use non-local resources for probabilistic signalling even if one can delete a quantum state with the help of probabilistic quantum deletion machine. Here we find that probabilistic quantum deletion machine is not going to help us in identifying two statistical mixture at remote location. Also we derive the bound on deletion probability from no-signalling con...

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Probabilistic exact cloning and probabilistic no-signalling

We show that non-local resources cannot be used for probabilistic signalling even if one can produce exact clones with the help of a probabilistic quantum cloning machine (PQCM). We show that PQCM cannot help to distinguish two statistical mixtures at a remote location. Thus quantum theory rules out the possibility of sending superluminal signals not only deterministically but also probabilisti...

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v 2 1 7 A ug 1 99 9 Probabilistic exact cloning and probabilistic no - signalling

We show that non-local resources cannot be used for probabilistic signalling even if one can produce exact clones with the help of a probabilistic quantum cloning machine (PQCM). We show that PQCM cannot help to distinguish two statistical mixtures at a remote location. Thus quantum theory rules out the possibility of sending superluminal signals not only deterministically but also probabilisti...

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No Signalling and Probabilistic Quantum Cloning

We show that the condition of no faster-than-light signalling restricts the number of quantum states that can be cloned in a given Hilbert space. This condition leads to the constraints on a probabilistic quantum cloning machine (PQCM) recently found by Duan and Guo. 1 E-mail: [email protected] 2 E-mail: [email protected] J.S. Bell showed, in his famous paper [1], the non-local n...

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ua nt - p h / 99 08 01 7 v 1 4 A ug 1 99 9 Probabilistic exact cloning and probabilistic no - signalling

We show that non-local resources cannot be used for probabilistic signalling even if one can produce exact clones with the help of a probabilistic quantum cloning machine (PQCM). We show that PQCM cannot help to distinguish two statistical mixtures at a remote location. Thus quantum theory rules out the possibility of sending superluminal signals not only deterministically but also probabilisti...

متن کامل

Probabilistic exact deletion and probabilistic no-signalling

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