22–26 Nov 2021
AlbaNova Main Building
Europe/Stockholm timezone
Please note: ECTI 2021 will be held as a hybrid event.

Correlation spectroscopy with multi-qubit-enhanced phase estimation

23 Nov 2021, 12:00
30m
Online via Zoom

Online via Zoom

invited talk online ECTI

Speaker

Christian Roos (University of Innsbruck, Austria)

Description

Precision spectroscopy with trapped ion crystals subject to correlated dephasing can reveal a multitude of information in the absence of any single-particle coherences. We present measurements of ion-ion distances, transition frequency shifts and single-shot measurements of laser-ion detunings by analyzing multi-particle correlations in one- and two-dimensional ion crystals of up to 91 ions. We show that the information contained in N-particle correlations reduces the measurement uncertainty as compared to the case where only two-particle correlations are analyzed.

Primary authors

Helene Hainzer (University of Innsbruck, Austria) Dominik Kiesenhofer (University of Innsbruck, Austria) Tuomas Ollikainen (IQOQI Innsbruck, Austria) Matthias Bock (IQOQI Innsbruck, Austria) Florian Kranzl (University of Innsbruck, Austria) Manoj Joshi (IQOQI Innsbruck, Austria) Rainer Blatt (University of Innsbruck, Austria) Tuvia Gefen (Caltech, USA) Christian Roos (University of Innsbruck, Austria)

Presentation materials

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