0104116v1

related topics
{measurement, state, measurements}
{energy, gaussian, time}
{time, wave, function}
{equation, function, exp}
{state, states, coherent}
{force, casimir, field}
{light, field, probe}
{states, state, optimal}
{field, particle, equation}
{information, entropy, channel}
{cos, sin, state}
{state, algorithm, problem}
{key, protocol, security}
{time, decoherence, evolution}

Sensitivity optimization in quantum parameter estimation

F. Verstraete, A. C. Doherty, H. Mabuchi

abstract: We present a general framework for sensitivity optimization in quantum parameter estimation schemes based on continuous (indirect) observation of a dynamical system. As an illustrative example, we analyze the canonical scenario of monitoring the position of a free mass or harmonic oscillator to detect weak classical forces. We show that our framework allows the consideration of sensitivity scheduling as well as estimation strategies for non-stationary signals, leading us to propose corresponding generalizations of the Standard Quantum Limit for force detection.

oai_identifier:
oai:arXiv.org:quant-ph/0104116
categories:
quant-ph
comments:
15 pages, RevTeX
doi:
10.1103/PhysRevA.64.032111
arxiv_id:
quant-ph/0104116
journal_ref:
Phys. Rev. A, 64: 032111 (2001)
created:
2001-04-24

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