2015/03/02 by Mark Kasperczyk, Ado Jório, Ado Jorio +9
Materials Science · Physics and Astronomy · #Diamond and Carbon-based Materials Research #FOS: Physical sciences #Mechanical and Optical Resonators #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Optics (physics.optics) #Quantum Physics (quant-ph) #Quantum optics and atomic interactions #cond-mat.mes-hall #physics.optics #quant-ph
paper · pdf · doi:10.48550/arxiv.1503.00467
5 pages, 4 figures
arxiv created 2015/03/02 · openalex publication_date 2015/03/02 · arxiv updated 2015/03/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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 PL. 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.