Motional Fock states for quantum-enhanced amplitude and phase measurements with trapped ions

verfasst von: Fabian Wolf, Chunyan Shi, Jan C. Heip, Manuel Gessner, Luca Pezzè, Augusto Smerzi, Marius Schulte, Klemens Hammerer, Piet Oliver Schmidt
Abstract: The quantum noise of the vacuum limits the achievable sensitivity of quantum sensors. In non-classical measurement schemes the noise can be reduced to overcome this limitation. However, schemes based on squeezed or Schrödinger cat states require alignment of the relative phase between the measured interaction and the non-classical quantum state. Here we present two measurement schemes on a trapped ion prepared in a motional Fock state for displacement and frequency metrology that are insensitive to this phase. The achieved statistical uncertainty is below the standard quantum limit set by quantum vacuum fluctuations, enabling applications in spectroscopy and mass measurements.
Organisationseinheit(en): Institut für Theoretische Physik
Institut für Quantenoptik
SFB 1227: Designte Quantenzustände der Materie (DQ-mat)
Externe Organisation(en): Physikalisch-Technische Bundesanstalt (PTB)
Consiglio Nazionale delle Ricerche (CNR)
European Laboratory for Non-linear Spectroscopy (LENS)
Quantum Science and Technology in Arcetri
Typ: Artikel
Journal: Nature Communications
Band: 10
ISSN: 2041-1723
Publikationsdatum: 02.07.2019
Publikationsstatus: Elektronisch veröffentlicht (E-Pub)
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Chemie (insg.), Biochemie, Genetik und Molekularbiologie (insg.), Physik und Astronomie (insg.)
Elektronische Version(en): https://doi.org/10.48550/arXiv.1807.01875 (Zugang: Offen)
https://doi.org/10.1038/s41467-019-10576-4 (Zugang: Offen)

BibTeX

@article{4b9a1c6aac354e91a38e9781c5dba8a8,
title = "Motional Fock states for quantum-enhanced amplitude and phase measurements with trapped ions",
abstract = "The quantum noise of the vacuum limits the achievable sensitivity of quantum sensors. In non-classical measurement schemes the noise can be reduced to overcome this limitation. However, schemes based on squeezed or Schr{\"o}dinger cat states require alignment of the relative phase between the measured interaction and the non-classical quantum state. Here we present two measurement schemes on a trapped ion prepared in a motional Fock state for displacement and frequency metrology that are insensitive to this phase. The achieved statistical uncertainty is below the standard quantum limit set by quantum vacuum fluctuations, enabling applications in spectroscopy and mass measurements.",
author = "Fabian Wolf and Chunyan Shi and Heip, {Jan C.} and Manuel Gessner and Luca Pezz{\`e} and Augusto Smerzi and Marius Schulte and Klemens Hammerer and Schmidt, {Piet Oliver}",
note = "Funding information: We acknowledge support from the DFG through CRC 1227 (DQ-mat), projects A06 and B05, and the state of Lower Saxony, Hannover, Germany. M.G. acknowledges support by the Alexander von Humboldt foundation.",
year = "2019",
month = jul,
day = "2",
doi = "10.48550/arXiv.1807.01875",
language = "English",
volume = "10",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",
}