File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Quantum computations without definite causal structure

TitleQuantum computations without definite causal structure
Authors
Issue Date2013
Citation
Physical Review A - Atomic, Molecular, and Optical Physics, 2013, v. 88, n. 2 How to Cite?
AbstractWe show that quantum theory allows for transformations of black boxes that cannot be realized by inserting the input black boxes within a circuit in a predefined causal order. The simplest example of such a transformation is the classical switch of black boxes, where two input black boxes are arranged in two different orders conditionally on the value of a classical bit. The quantum version of this transformation - the quantum switch - produces an output circuit where the order of the connections is controlled by a quantum bit, which becomes entangled with the circuit structure. Simulating these transformations in a circuit with fixed causal structure requires either postselection or an extra query to the input black boxes. ©2013 American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/213359
ISSN
2014 Impact Factor: 2.808
2015 SCImago Journal Rankings: 1.418
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChiribella, Giulio-
dc.contributor.authorD'Ariano, Giacomo Mauro-
dc.contributor.authorPerinotti, Paolo-
dc.contributor.authorValiron, Benoit-
dc.date.accessioned2015-07-28T04:07:01Z-
dc.date.available2015-07-28T04:07:01Z-
dc.date.issued2013-
dc.identifier.citationPhysical Review A - Atomic, Molecular, and Optical Physics, 2013, v. 88, n. 2-
dc.identifier.issn1050-2947-
dc.identifier.urihttp://hdl.handle.net/10722/213359-
dc.description.abstractWe show that quantum theory allows for transformations of black boxes that cannot be realized by inserting the input black boxes within a circuit in a predefined causal order. The simplest example of such a transformation is the classical switch of black boxes, where two input black boxes are arranged in two different orders conditionally on the value of a classical bit. The quantum version of this transformation - the quantum switch - produces an output circuit where the order of the connections is controlled by a quantum bit, which becomes entangled with the circuit structure. Simulating these transformations in a circuit with fixed causal structure requires either postselection or an extra query to the input black boxes. ©2013 American Physical Society.-
dc.languageeng-
dc.relation.ispartofPhysical Review A - Atomic, Molecular, and Optical Physics-
dc.titleQuantum computations without definite causal structure-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevA.88.022318-
dc.identifier.scopuseid_2-s2.0-84884850664-
dc.identifier.volume88-
dc.identifier.issue2-
dc.identifier.eissn1094-1622-
dc.identifier.isiWOS:000323152700004-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats