Generalized Limits for Single-Parameter Quantum Estimation

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dc.creatorBoixo, Sergio
dc.creatorFlammia, Steven T.
dc.creatorCaves, Carlton M.
dc.creatorGeremia, JM
dc.date2006-09-22
dc.date2006-11-21
dc.date.accessioned2026-07-07T07:49:14Z
dc.date.available2026-07-07T07:49:14Z
dc.descriptionWe develop generalized bounds for quantum single-parameter estimation problems for which the coupling to the parameter is described by intrinsic multi-system interactions. For a Hamiltonian with $k$-system parameter-sensitive terms, the quantum limit scales as $1/N^k$ where $N$ is the number of systems. These quantum limits remain valid when the Hamiltonian is augmented by any parameter independent interaction among the systems and when adaptive measurements via parameter-independent coupling to ancillas are allowed.
dc.description4 pages, 1 figure. v2 typos corrected
dc.identifierhttps://arxiv.org/abs/quant-ph/0609179
dc.identifierhttp://arxiv.org/abs/quant-ph/0609179
dc.identifierPhys. Rev. Lett. 98, 090401 (2007)
dc.identifierdoi:10.1103/PhysRevLett.98.090401
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/124768
dc.subjectQuantum Physics
dc.subjectOther Condensed Matter
dc.titleGeneralized Limits for Single-Parameter Quantum Estimation
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