Evolution-free Hamiltonian parameter estimation through Zeeman markers

Daniel Burgarth*, Ashok Ajoy

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)
17 Downloads (Pure)


We provide a protocol for Hamiltonian parameter estimation which relies only on the Zeeman effect. No time-dependent quantities need to be measured; it fully suffices to observe spectral shifts induced by fields applied to local "markers." We demonstrate the idea with a simple tight-binding Hamiltonian and numerically show stability with respect to Gaussian noise on the spectral measurements. Then we generalize the result to show applicability to a wide range of systems, including quantum spin chains, networks of qubits, and coupled harmonic oscillators, and suggest potential experimental implementations.

Original languageEnglish
Article number030402
Pages (from-to)1-5
Number of pages5
JournalPhysical Review Letters
Issue number3
Publication statusPublished - 21 Jul 2017
Externally publishedYes

Bibliographical note

Copyright the Author(s) 2017. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.


Dive into the research topics of 'Evolution-free Hamiltonian parameter estimation through Zeeman markers'. Together they form a unique fingerprint.

Cite this