Quantum data bus in dipolar coupled nuclear spin qubits


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dc.contributor.author Zhang, Jingfu
dc.contributor.author Burgarth, Daniel
dc.contributor.author Ditty, Michael
dc.contributor.author Ryan, Colm A.
dc.contributor.author Chandrashekar, C. M.
dc.contributor.author Laforest, Martin
dc.contributor.author Moussa, Osama
dc.contributor.author Baugh, Jonathan
dc.contributor.author Laflamme, Raymond
dc.date.accessioned 2011-09-26T14:38:08Z
dc.date.available 2011-09-26T14:38:08Z
dc.date.issued 2009-06-16
dc.identifier.citation Zhang , J , Burgarth , D , Ditty , M , Ryan , C A , Chandrashekar , C M , Laforest , M , Moussa , O , Baugh , J & Laflamme , R 2009 , ' Quantum data bus in dipolar coupled nuclear spin qubits ' Physical Review A , vol 80 , no. 1 . , 10.1103/PhysRevA.80.012316 en
dc.identifier.issn 1050-2947
dc.identifier.other PURE: 171293
dc.identifier.other dspace: 2160/7599
dc.identifier.uri http://hdl.handle.net/2160/7599
dc.description J. Zhang, D. Burgarth, M. Ditty, C.A. Ryan, C.M. Chandrashekar, M. Laforest, O. Moussa, J. Baugh and R. Laflamme, Quantum Data Bus in Dipolar Coupled Nuclear Spin Qubits, Phys. Rev. A 80, 012316 (2009). en
dc.description.abstract We implement an iterative quantum state transfer exploiting the natural dipolar couplings in a spin chain of a liquid-crystal NMR system. During each iteration, a finite part of the amplitude of the state is transferred and, by applying an external operation on only the last two spins, the transferred state is made to accumulate on the spin at the end point. The transfer fidelity reaches one asymptotically through increasing the number of iterations. We also implement the inverted version of the scheme which can transfer an arbitrary state from the end point to any other position of the chain and entangle any pair of spins in the chain, acting as a full quantum data bus. en
dc.language.iso eng
dc.relation.ispartof Physical Review A en
dc.title Quantum data bus in dipolar coupled nuclear spin qubits en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1103/PhysRevA.80.012316
dc.contributor.institution Institute of Mathematics & Physics (ADT) en
dc.contributor.institution Quantum Systems, Information and Control en
dc.description.status Peer reviewed en

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