Quantum backaction in spinor-condensate magnetometry

S. K. Steinke, S. Singh, Pierre Meystre, K. C. Schwab, M. Vengalattore

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We provide a theoretical treatment of the quantum backaction of Larmor frequency measurements on a spinor Bose-Einstein condensate by an off-resonant light field. Two main results are presented; the first is a "quantum jump" operator description that reflects the abrupt change in the spin state of the atoms when a single photon is counted at a photodiode. The second is the derivation of a conditional stochastic master equation relating the evolution of the condensate density matrix to the measurement record. We provide a few examples of the application of this formalism and comment on its application to metrology.

Original languageEnglish (US)
Article number063809
JournalPhysical Review A
Volume88
Issue number6
DOIs
StatePublished - Dec 3 2013

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magnetic measurement
condensates
frequency measurement
Bose-Einstein condensates
metrology
photodiodes
derivation
formalism
operators
photons
atoms

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Steinke, S. K., Singh, S., Meystre, P., Schwab, K. C., & Vengalattore, M. (2013). Quantum backaction in spinor-condensate magnetometry. Physical Review A, 88(6), [063809]. https://doi.org/10.1103/PhysRevA.88.063809

Quantum backaction in spinor-condensate magnetometry. / Steinke, S. K.; Singh, S.; Meystre, Pierre; Schwab, K. C.; Vengalattore, M.

In: Physical Review A, Vol. 88, No. 6, 063809, 03.12.2013.

Research output: Contribution to journalArticle

Steinke, SK, Singh, S, Meystre, P, Schwab, KC & Vengalattore, M 2013, 'Quantum backaction in spinor-condensate magnetometry', Physical Review A, vol. 88, no. 6, 063809. https://doi.org/10.1103/PhysRevA.88.063809
Steinke, S. K. ; Singh, S. ; Meystre, Pierre ; Schwab, K. C. ; Vengalattore, M. / Quantum backaction in spinor-condensate magnetometry. In: Physical Review A. 2013 ; Vol. 88, No. 6.
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