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Proceedings Paper

Ultrafast photonic quantum correlations mediated by individual phonons (Conference Presentation)
Author(s): Christophe Galland; Santiago Tarrago; Mitchell D. Anderson

Paper Abstract

We present a new experiment, in which we measure quantum correlations between single photons that are mediated by the exchange of a single phonon. We create and annihilate a single optical phonon in bulk diamond using two ultrashort laser pulses at two different wavelengths, generated by a Ti:Sapph oscillator and a frequency-doubled optical parametric oscillator (APE Berlin). During Stokes Raman scattering, the first pulse creates a photon-phonon pair, while the second pulse convert the same phonon into an anti-Stokes photon. Using spectral filtering and photon counting, we measure the cross-correlations between the Stokes and anti-Stokes photons with a few hundred femtoseconds time resolution. As expected, the non-classical correlation (g(2) much larger than the classical bound) decays within a few picosecond, following to the dynamics of the phonon mode. Our results demonstrate a new source of broadly tunable quantum correlated photons, and can be extended to provide a new way of measuring non-classical dynamics in nanoscale systems — down to individual nanostructures.

Paper Details

Date Published: 29 May 2018
Proc. SPIE 10674, Quantum Technologies 2018, 106740W (29 May 2018); doi: 10.1117/12.2307193
Show Author Affiliations
Christophe Galland, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Santiago Tarrago, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Mitchell D. Anderson, Ecole Polytechnique Fédérale de Lausanne (Switzerland)

Published in SPIE Proceedings Vol. 10674:
Quantum Technologies 2018
Jürgen Stuhler; Andrew J. Shields; Miles J. Padgett, Editor(s)

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