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Quantum deleting and Signalling

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 نشر من قبل A. K. Pati
 تاريخ النشر 2003
  مجال البحث فيزياء
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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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