In situ detection of the temporal and initial phase of the second harmonic of a microwave field via incoherent fluorescence

George C. Cardoso*, Prabhakar Pradhan, Jacob Morzinski, M. S. Shahriar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Measuring the amplitude and absolute (i.e., temporal and initial) phase of a monochromatic microwave field at a specific point of space and time has many potential applications, including precise qubit rotations and wavelength quantum teleportation. Here we show how such a measurement can indeed be made using resonant atomic probes via detection of incoherent fluorescence induced by a laser beam. This measurement is possible due to self-interference effects between the positive- and negative-frequency components of the field. In effect, the small cluster of atoms here act as a highly localized pickup coil, and the fluorescence channel acts as a transmission line.

Original languageEnglish (US)
Article number063408
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume71
Issue number6
DOIs
StatePublished - Jun 2005

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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