Observation of Intensity Squeezing in Resonance Fluorescence from a Solid-State Device. Academic Article uri icon

abstract

  • Intensity squeezing-i.e., photon number fluctuations below the shot-noise limit-is a fundamental aspect of quantum optics and has wide applications in quantum metrology. It was predicted in 1979 that intensity squeezing could be observed in resonance fluorescence from a two-level quantum system. However, its experimental observation in solid states was hindered by inefficiencies in generating, collecting, and detecting resonance fluorescence. Here, we report the intensity squeezing in a single-mode fiber-coupled resonance fluorescence single-photon source based on a quantum dot-micropillar system. We detect pulsed single-photon streams with 22.6% system efficiency, which show sub-shot-noise intensity fluctuation with an intensity squeezing of 0.59dB. We estimate a corrected squeezing of 3.29dB at the first lens. The observed intensity squeezing provides the last piece of the fundamental picture of resonance fluorescence, which can be used as a new standard for optical radiation and in scalable quantum metrology with indistinguishable single photons.

published proceedings

  • Phys Rev Lett

altmetric score

  • 46.85

author list (cited authors)

  • Wang, H., Qin, J., Chen, S. i., Chen, M., You, X., Ding, X., ... Pan, J.

citation count

  • 8

complete list of authors

  • Wang, Hui||Qin, Jian||Chen, Si||Chen, Ming-Cheng||You, Xiang||Ding, Xing||Huo, Y-H||Yu, Ying||Schneider, C||Höfling, Sven||Scully, Marlan||Lu, Chao-Yang||Pan, Jian-Wei

publication date

  • October 2020