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

Fabian Wolf, Chunyan Shi, Jan C. Heip, Manuel Gessner, Luca Pezzè, Augusto Smerzi, Marius Schulte, Klemens Hammerer and Piet O. Schmidt ()
Additional contact information
Fabian Wolf: Physikalisch-Technische Bundesanstalt
Chunyan Shi: Physikalisch-Technische Bundesanstalt
Jan C. Heip: Physikalisch-Technische Bundesanstalt
Manuel Gessner: QSTAR, INO-CNR and LENS
Luca Pezzè: QSTAR, INO-CNR and LENS
Augusto Smerzi: QSTAR, INO-CNR and LENS
Marius Schulte: Leibniz Universität Hannover
Klemens Hammerer: Leibniz Universität Hannover
Piet O. Schmidt: Physikalisch-Technische Bundesanstalt

Nature Communications, 2019, vol. 10, issue 1, 1-8

Abstract: 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.

Date: 2019
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/s41467-019-10576-4 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-10576-4

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-019-10576-4

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().