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arXiv · 1503.00467

Stokes--anti-Stokes Correlations in Raman Scattering from Diamond Membranes

Mark Kasperczyk·Ado Jorio·Elke Neu·Patrick Maletinsky·Lukas Novotny
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Abstract

We investigate the arrival statistics of Stokes (S) and anti-Stokes (aS) Raman photons generated in diamond membranes. Strong quantum correlations between the S and aS signals are observed, which implies that the two processes share the same phonon, that is, the phonon excited by the S process is consumed in the aS process. We show that the intensity cross-correlation $g_{\rm S,aS}^{(2)}(0)$, which describes the simultaneous detection of Stokes and anti-Stokes photons, decreases steadily with laser power as $1/{\rm P_L}$. Contrary to many other material systems, diamond exhibits a maximum $g_{\rm S,aS}^{(2)}(0)$ at very low pump powers, implying that the Stokes-induced aS photons outnumber the thermally generated aS photons. On the other hand, the coincidence rate shows a quadratic plus cubic power dependence, which indicates a departure from the Stokes-induced anti-Stokes process.

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quant-phcond-mat.mes-hallphysics.optics

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Mark Kasperczyk, Ado Jorio, Elke Neu, Patrick Maletinsky, Lukas Novotny. 2015-03-02. Stokes--anti-Stokes Correlations in Raman Scattering from Diamond Membranes. https://arxiv.org/abs/1503.00467

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