File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Optimal probabilistic simulation of quantum channels from the future to the past

TitleOptimal probabilistic simulation of quantum channels from the future to the past
Authors
Issue Date2012
Citation
Physical Review A - Atomic, Molecular, and Optical Physics, 2012, v. 85, n. 2 How to Cite?
AbstractWe introduce the study of quantum protocols that probabilistically simulate quantum channels from a sender in the future to a receiver in the past. The maximum probability of simulation is determined by causality and depends on the amount and type (classical or quantum) of information that the channel can transmit. We illustrate this dependence in several examples, including ideal classical and quantum channels, measure-and-prepare channels, partial trace channels, and universal cloning channels. For the simulation of partial trace channels, we consider generalized teleportation protocols that take N input copies of a pure state in the future and produce M≤N output copies of the same state in the past. In this case, we show that the maximum probability of successful teleportation increases with the number of input copies, a feature that was impossible in classical physics. In the limit of asymptotically large N, the probability converges to the probability of simulation for an ideal classical channel. Similar results are found for universal cloning channels from N copies to M>N approximate copies, exploiting a time-reversal duality between universal cloning and a partial trace. © 2012 American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/213218
ISSN
2014 Impact Factor: 2.808
2015 SCImago Journal Rankings: 1.418
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorGenkina, Dina-
dc.contributor.authorChiribella, Giulio-
dc.contributor.authorHardy, Lucien-
dc.date.accessioned2015-07-28T04:06:34Z-
dc.date.available2015-07-28T04:06:34Z-
dc.date.issued2012-
dc.identifier.citationPhysical Review A - Atomic, Molecular, and Optical Physics, 2012, v. 85, n. 2-
dc.identifier.issn1050-2947-
dc.identifier.urihttp://hdl.handle.net/10722/213218-
dc.description.abstractWe introduce the study of quantum protocols that probabilistically simulate quantum channels from a sender in the future to a receiver in the past. The maximum probability of simulation is determined by causality and depends on the amount and type (classical or quantum) of information that the channel can transmit. We illustrate this dependence in several examples, including ideal classical and quantum channels, measure-and-prepare channels, partial trace channels, and universal cloning channels. For the simulation of partial trace channels, we consider generalized teleportation protocols that take N input copies of a pure state in the future and produce M≤N output copies of the same state in the past. In this case, we show that the maximum probability of successful teleportation increases with the number of input copies, a feature that was impossible in classical physics. In the limit of asymptotically large N, the probability converges to the probability of simulation for an ideal classical channel. Similar results are found for universal cloning channels from N copies to M>N approximate copies, exploiting a time-reversal duality between universal cloning and a partial trace. © 2012 American Physical Society.-
dc.languageeng-
dc.relation.ispartofPhysical Review A - Atomic, Molecular, and Optical Physics-
dc.titleOptimal probabilistic simulation of quantum channels from the future to the past-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevA.85.022330-
dc.identifier.scopuseid_2-s2.0-84857556470-
dc.identifier.volume85-
dc.identifier.issue2-
dc.identifier.eissn1094-1622-
dc.identifier.isiWOS:000300564700005-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats