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

Jukka Kiukas; Kazuya Yuasa; Daniel Burgarth

doi:10.1103/PhysRevA.95.052132

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

Jukka Kiukas, Kazuya Yuasa, Daniel Burgarth

Research output: Contribution to journal › Article

2 Citations (Scopus)

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
Article number	052132
Journal	Physical Review A
Volume	95
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevA.95.052132
Publication status	Published - 2017 May 31

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ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Cite this

Kiukas, J., Yuasa, K., & Burgarth, D. (2017). Remote parameter estimation in a quantum spin chain enhanced by local control. Physical Review A, 95(5), [052132]. https://doi.org/10.1103/PhysRevA.95.052132

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Access to Document

10.1103/PhysRevA.95.052132