Coupling strength estimation for spin chains despite restricted access

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dc.creatorBurgarth, Daniel
dc.creatorMaruyama, Koji
dc.creatorNori, Franco
dc.date2008-10-16
dc.date2008-12-19
dc.date.accessioned2026-07-07T12:51:47Z
dc.date.available2026-07-07T12:51:47Z
dc.descriptionQuantum control requires full knowledge of the system many-body Hamiltonian. In many cases this information is not directly available due to restricted access to the system. Here we show how to indirectly estimate all the coupling strengths in a spin chain by measuring one spin at the end of the chain. We also discuss the efficiency of this "quantum inverse problem" and give a numerical example.
dc.descriptionimproved version with additional reference
dc.identifierhttps://arxiv.org/abs/0810.2866
dc.identifierhttp://arxiv.org/abs/0810.2866
dc.identifierPhys. Rev. A 79, 020305(R) (2009)
dc.identifierdoi:10.1103/PhysRevA.79.020305
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/223100
dc.subjectQuantum Physics
dc.titleCoupling strength estimation for spin chains despite restricted access
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