dorsal/arxiv
View SchemaGeneralized Limits for Single-Parameter Quantum Estimation
| Authors | Sergio Boixo, Steven T. Flammia, Carlton M. Caves, JM Geremia |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0609179 |
| URL | https://arxiv.org/abs/quant-ph/0609179 |
| DOI | 10.1103/PhysRevLett.98.090401 |
| Journal | Phys. Rev. Lett. 98, 090401 (2007) |
Abstract
We 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.
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"abstract": "We develop generalized bounds for quantum single-parameter estimation\nproblems for which the coupling to the parameter is described by intrinsic\nmulti-system interactions. For a Hamiltonian with $k$-system\nparameter-sensitive terms, the quantum limit scales as $1/N^k$ where $N$ is the\nnumber of systems. These quantum limits remain valid when the Hamiltonian is\naugmented by any parameter independent interaction among the systems and when\nadaptive measurements via parameter-independent coupling to ancillas are\nallowed.",
"arxiv_id": "quant-ph/0609179",
"authors": [
"Sergio Boixo",
"Steven T. Flammia",
"Carlton M. Caves",
"JM Geremia"
],
"categories": [
"quant-ph",
"cond-mat.other"
],
"doi": "10.1103/PhysRevLett.98.090401",
"journal_ref": "Phys. Rev. Lett. 98, 090401 (2007)",
"title": "Generalized Limits for Single-Parameter Quantum Estimation",
"url": "https://arxiv.org/abs/quant-ph/0609179"
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