| Title | Generalized Limits for Single-Parameter Quantum Estimation |
| Publication Type | Journal Article |
| Year of Publication | 2007 |
| Authors | Boixo, S., S. T. Flammia, C. M. Caves, and {J. M. } Geremia |
| Journal | Physical Review Letters |
| Pages | 090401–4 |
| Date Published | mar |
| Abstract | We develop generalized bounds for quantum single-parameter estimation problems for which the coupling to the parameter is described by intrinsic multisystem interactions. For a Hamiltonian with k-system parameter-sensitive terms, the quantum limit scales as {1/N} ot the 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 |
| URL | http://link.aps.org/abstract/PRL/v98/e090401 |
Sergio Boixo
Publication 26 of 29
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