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DOE OSTI · 2278817

Confirming X-ray Parametric Down Conversion by Time-Energy Correlation

Hartley, Nicholas John·Hodge, Daniel·Buckway, Taylor·Camacho, Ryan·Chow, Paul·Christie, Eric·Gleason, Arianna·Glenzer, Siegfried·Halavanau, Aliaksei·Hardy, Abi Mae·Recker, Colin·Sheehan, Sean·Shwartz, Sharon·Tarvin, Hilary·Ware, Michael·Wunschel, Joseph·Xiao, Yuming·Sandberg, Richard·Walker, Gary
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Abstract

We present measurements of X-ray Parametric Down Conversion at the Advanced Photon Source synchrotron facility. Using an incoming pump beam at 22 keV, we observe the simultaneous, elastic emission of down-converted photon pairs generated in a diamond crystal. The pairs are detected using high count rate silicon drift detectors with low noise. Production by down-conversion is confirmed by measuring time-energy correlations in the detector signal, where photon pairs within an energy window ranging from 10 to 12 keV are only observed at short time differences. By systematically varying the crystal misalignment and detector positions, we obtain results that are consistent with the constant total of the down-converted signal. Our maximum rate of observed pairs was 130 /hour, corresponding to a conversion efficiency for the down-conversion process of 5.3±0.5×10 -13 .

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47 OTHER INSTRUMENTATIONentanglementquantum information sciencequantum opticsspontaneous parametric down conversionx-rays

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Hartley, Nicholas John, Hodge, Daniel, Buckway, Taylor, Camacho, Ryan, Chow, Paul, Christie, Eric, Gleason, Arianna, Glenzer, Siegfried, Halavanau, Aliaksei, Hardy, Abi Mae, Recker, Colin, Sheehan, Sean, Shwartz, Sharon, Tarvin, Hilary, Ware, Michael, Wunschel, Joseph, Xiao, Yuming, Sandberg, Richard, Walker, Gary. 2024-01-06. Confirming X-ray Parametric Down Conversion by Time-Energy Correlation. https://doi.org/10.1016/j.rinp.2024.107328

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