Efficient quantum computation within a disordered Heisenberg spin-chain

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dc.creatorLee, Chiu Fan
dc.creatorJohnson, Neil F.
dc.date2004-04-29
dc.date2004-09-07
dc.date.accessioned2026-07-07T06:09:38Z
dc.date.available2026-07-07T06:09:38Z
dc.descriptionWe show that efficient quantum computation is possible using a disordered Heisenberg spin-chain with `always-on' couplings. Such disorder occurs naturally in nanofabricated systems. Considering a simple chain setup, we show that an arbitrary two-qubit gate can be implemented using just three relaxations of a controlled qubit, which amounts to switching the on-site energy terms at most twenty-one times.
dc.descriptionTo appear in Phys. Rev. A
dc.identifierhttps://arxiv.org/abs/quant-ph/0404163
dc.identifierhttp://arxiv.org/abs/quant-ph/0404163
dc.identifierPhys. Rev. A 70, 052322 (2004)
dc.identifierdoi:10.1103/PhysRevA.70.052322
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/92026
dc.subjectQuantum Physics
dc.subjectMaterials Science
dc.titleEfficient quantum computation within a disordered Heisenberg spin-chain
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