Enhanced squeezing of a collective spin via control of its qudit subsystems

Leigh M. Norris, Collin M. Trail, Poul S Jessen, Ivan H. Deutsch

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Unitary control of qudits can improve the collective spin squeezing of an atomic ensemble. Preparing the atoms in a state with large quantum fluctuations in magnetization strengthens the entangling Faraday interaction. The resulting increase in interatomic entanglement can be converted into metrologically useful spin squeezing. Further control can squeeze the internal atomic spin without compromising entanglement, providing an overall multiplicative factor in the collective squeezing. We model the effects of optical pumping and study the tradeoffs between enhanced entanglement and decoherence. For realistic parameters we see improvements of ∼10dB.

Original languageEnglish (US)
Article number173603
JournalPhysical Review Letters
Volume109
Issue number17
DOIs
StatePublished - Oct 23 2012

Fingerprint

compressing
optical pumping
tradeoffs
magnetization
atoms
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Enhanced squeezing of a collective spin via control of its qudit subsystems. / Norris, Leigh M.; Trail, Collin M.; Jessen, Poul S; Deutsch, Ivan H.

In: Physical Review Letters, Vol. 109, No. 17, 173603, 23.10.2012.

Research output: Contribution to journalArticle

Norris, Leigh M. ; Trail, Collin M. ; Jessen, Poul S ; Deutsch, Ivan H. / Enhanced squeezing of a collective spin via control of its qudit subsystems. In: Physical Review Letters. 2012 ; Vol. 109, No. 17.
@article{e66f0b7d72d5408fa7e67aedcc474c13,
title = "Enhanced squeezing of a collective spin via control of its qudit subsystems",
abstract = "Unitary control of qudits can improve the collective spin squeezing of an atomic ensemble. Preparing the atoms in a state with large quantum fluctuations in magnetization strengthens the entangling Faraday interaction. The resulting increase in interatomic entanglement can be converted into metrologically useful spin squeezing. Further control can squeeze the internal atomic spin without compromising entanglement, providing an overall multiplicative factor in the collective squeezing. We model the effects of optical pumping and study the tradeoffs between enhanced entanglement and decoherence. For realistic parameters we see improvements of ∼10dB.",
author = "Norris, {Leigh M.} and Trail, {Collin M.} and Jessen, {Poul S} and Deutsch, {Ivan H.}",
year = "2012",
month = "10",
day = "23",
doi = "10.1103/PhysRevLett.109.173603",
language = "English (US)",
volume = "109",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "17",

}

TY - JOUR

T1 - Enhanced squeezing of a collective spin via control of its qudit subsystems

AU - Norris, Leigh M.

AU - Trail, Collin M.

AU - Jessen, Poul S

AU - Deutsch, Ivan H.

PY - 2012/10/23

Y1 - 2012/10/23

N2 - Unitary control of qudits can improve the collective spin squeezing of an atomic ensemble. Preparing the atoms in a state with large quantum fluctuations in magnetization strengthens the entangling Faraday interaction. The resulting increase in interatomic entanglement can be converted into metrologically useful spin squeezing. Further control can squeeze the internal atomic spin without compromising entanglement, providing an overall multiplicative factor in the collective squeezing. We model the effects of optical pumping and study the tradeoffs between enhanced entanglement and decoherence. For realistic parameters we see improvements of ∼10dB.

AB - Unitary control of qudits can improve the collective spin squeezing of an atomic ensemble. Preparing the atoms in a state with large quantum fluctuations in magnetization strengthens the entangling Faraday interaction. The resulting increase in interatomic entanglement can be converted into metrologically useful spin squeezing. Further control can squeeze the internal atomic spin without compromising entanglement, providing an overall multiplicative factor in the collective squeezing. We model the effects of optical pumping and study the tradeoffs between enhanced entanglement and decoherence. For realistic parameters we see improvements of ∼10dB.

UR - http://www.scopus.com/inward/record.url?scp=84868024325&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84868024325&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.109.173603

DO - 10.1103/PhysRevLett.109.173603

M3 - Article

AN - SCOPUS:84868024325

VL - 109

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 17

M1 - 173603

ER -