Quantum Cramér–Rao bound
id:
quantum-cram-r-rao-bound-305-17672572
title:
Quantum Cramér–Rao bound
text:
The quantum Cramér–Rao bound is the quantum analogue of the classical Cramér–Rao bound. It bounds the achievable precision in parameter estimation with a quantum system: 2 ≥ 1 m F Q [ ϱ , H ] , where m is the number of independent repetitions, and F Q [ ϱ , H ] is the quantum Fisher information. Here, ϱ is the state of the system and H is the Hamiltonian of the system. When considering a unitary dynamics of the type ϱ = exp ϱ 0 exp , where ϱ 0 is the initial state of the system, θ is the par
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Quantum_Cram%C3%A9r%E2%80%93Rao_bound
date created:
date modified:
2023-12-09T18:54:23Z
main entity:
{"identifier":"Q85795242","url":"https://www.wikidata.org/entity/Q85795242"}
image:
fields total:
13
integrity:
13