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dc.contributor.authorCappellaro, Paola
dc.contributor.authorViola, Lorenza
dc.contributor.authorRamanathan, Chandrasekhar
dc.date.accessioned2011-08-31T14:46:57Z
dc.date.available2011-08-31T14:46:57Z
dc.date.issued2011-03
dc.date.submitted2010-11
dc.identifier.issn1050-2947
dc.identifier.issn1094-1622
dc.identifier.urihttp://hdl.handle.net/1721.1/65561
dc.description.abstractSpin chains have been proposed as quantum wires in many quantum-information processing architectures. Coherent transmission of quantum information in spin chains over short distances is enabled by their internal dynamics, which drives the transport of single-spin excitations in perfectly polarized chains. Given the practical challenge of preparing the chain in a pure state, we propose to use a chain that is initially in the maximally mixed state. We compare the transport properties of pure and mixed-state chains and find similarities that enable the experimental study of pure-state transfer via mixed-state chains. We also demonstrate protocols for the perfect transfer of quantum information in these chains. Remarkably, mixed-state chains allow the use of Hamiltonians that do not preserve the total number of single-spin excitations and are more readily obtainable from the naturally occurring magnetic dipolar interaction. We discuss experimental implementations using solid-state nuclear magnetic resonance and defect centers in diamond.en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (grant DMR-1005926)en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (grant PHY-0903727)en_US
dc.language.isoen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevA.83.032304en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceAPSen_US
dc.titleCoherent-state transfer via highly mixed quantum spin chainsen_US
dc.typeArticleen_US
dc.identifier.citationCappellaro, Paola, Lorenza Viola, and Chandrasekhar Ramanathan. “Coherent-state Transfer via Highly Mixed Quantum Spin Chains.” Physical Review A 83.3 (2011) ©2011 American Physical Societyen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Nuclear Science and Engineeringen_US
dc.contributor.approverCappellaro, Paola
dc.contributor.mitauthorCappellaro, Paola
dc.relation.journalPhysical Review Aen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsCappellaro, Paola; Viola, Lorenza; Ramanathan, Chandrasekharen
dc.identifier.orcidhttps://orcid.org/0000-0003-3207-594X
mit.licensePUBLISHER_POLICYen_US


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