Remote parameter estimation in a quantum spin chain enhanced by local control

Jukka Kiukas; Kazuya Yuasa; Daniel Burgarth

Remote parameter estimation in a quantum spin chain enhanced by local control

Jukka Kiukas, Kazuya Yuasa, Daniel Burgarth

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

We study the interplay of control and parameter estimation on a quantum spin chain. A single qubit probe is attached to one end of the chain, while we wish to estimate a parameter on the other end. We find that control on the probe qubit can substantially improve the estimation performance and discover some interesting connections to quantum state transfer.

Original language	English
Journal	Unknown Journal
Publication status	Published - 2017 Jan 25

ASJC Scopus subject areas

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title = "Remote parameter estimation in a quantum spin chain enhanced by local control",

abstract = "We study the interplay of control and parameter estimation on a quantum spin chain. A single qubit probe is attached to one end of the chain, while we wish to estimate a parameter on the other end. We find that control on the probe qubit can substantially improve the estimation performance and discover some interesting connections to quantum state transfer.",

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