Cross Modulation of Two Laser Beams at the Individual-Photon Level
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PhysRevLett.113.113603.pdf
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Author(s)
Chen, Wenlan
Lin, Qian
Gullans, Michael
Lukin, Mikhail D.
Beck, Kristin Marie
Vuletic, Vladan
Date Issued
September 2014
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Beck, Kristin M., Wenlan Chen, Qian Lin, Michael Gullans, Mikhail D. Lukin, and Vladan Vuletic. "Cross Modulation of Two Laser Beams at the Individual-Photon Level." Phys. Rev. Lett. 113, 113603 (September 2014). © 2014 American Physical Society
Version
Final published version
Abstract
Deterministic photon-photon interactions are a long-standing goal in optical science. Using an atomic ensemble inside a cavity, we demonstrate the mutual cross modulation of two continuous light beams at the level of individual photons. The originally uncorrelated beams derived from independent lasers become anticorrelated, as evidenced by an equal-time cross-correlation function g[superscript (2)] = 0.89(1), showing that one photon in one beam extinguishes a photon in the other beam with a probability of 11(1)%. With further technical improvements, our approach should enable the nondestructive continuous detection of traveling optical photons.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.113.113603
