Quantum sensitivity limits of an optical magnetometer based on atomic phase coherence. Academic Article uri icon


  • An optical magnetometer based on atomic coherence effects is analyzed using a quantum Langevin approach. The large dispersion of a phase-coherent atomic medium (phaseonium) at a point of vanishing absorption is used to detect magnetic level shifts via optical phase measurements in a Mach-Zehnder interferometer with sensitivities potentially superior to state-of-the-art devices. Effects of Doppler broadening and fluctuations of the driving field are discussed and a comparison to standard optical-pumping magnetometers is made. 1994 The American Physical Society.

published proceedings

  • Phys Rev A

author list (cited authors)

  • Fleischhauer, M., & Scully, M. O.

citation count

  • 120

complete list of authors

  • Fleischhauer, M||Scully, MO

publication date

  • March 1994