Two-Color Photon Correlations of the Light Scattered by a Quantum Dot

Abstract

Two-color second-order correlations of the light scattered near-resonantly by a quantum dot were measured by means of spectrally-filtered coincidence detection. The effects of filter frequency and bandwidth were studied under monochromatic laser excitation, and a complete two-photon spectrum was reconstructed. In contrast to the ordinary one-photon spectrum, the two-photon spectrum is asymmetric with laser detuning and exhibits a rich structure associated with both real and virtual two-photon transitions down the "dressed states" ladder. Photon pairs generated via virtual transitions are found to violate the Cauchy-Schwartz inequality by a factor of 60. Our experiments are well described by the theoretical expressions obtained by del Valle et al. via time-and normally-ordered correlation functions.

5 pages, 3 figures

References in corpus (6)

• Entangled Photon Pairs from Semiconductor Quantum Dots
• Resonance fluorescence from a coherently driven semiconductor quantum dot in a cavity
• Improved fidelity of triggered entangled photons from single quantum dots
• Theory of frequency-filtered and time-resolved N-photon correlations
• Two-photon interference using background-free quantum frequency conversion of single photons from a semiconductor quantum dot
• Violation of classical inequalities by photon frequency-filtering

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• Entanglement in Resonance Fluorescence
• Single-photon source over the terahertz regime
• Two photons everywhere
• Entanglement of photonic modes from a continuously driven two-level system
• Spectral correlations of dynamical Resonance Fluorescence
• Quantum metrology through spectral measurements in quantum optics
• Pulsed Quantum Excitation