Alex Widhalm
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View article: Nanosecond gating of superconducting nanowire single-photon detectors using cryogenic bias circuitry
Nanosecond gating of superconducting nanowire single-photon detectors using cryogenic bias circuitry Open
Superconducting nanowire single-photon detectors (SNSPDs) show near unity efficiency, low dark count rate, and short recovery time. Combining these characteristics with temporal control of SNSPDs broadens their applications as in active de…
View article: Nanosecond gating of superconducting nanowire single-photon detectors using cryogenic bias circuitry
Nanosecond gating of superconducting nanowire single-photon detectors using cryogenic bias circuitry Open
Superconducting nanowire single-photon detectors (SNSPDs) show near unity efficiency, low dark count rate, and short recovery time. Combining these characteristics with temporal control of SNSPDs broadens their applications as in active de…
View article: Nonlinear down-conversion in a single quantum dot
Nonlinear down-conversion in a single quantum dot Open
View article: Nonlinear down-conversion in a single quantum dot
Nonlinear down-conversion in a single quantum dot Open
This repository contains original experimental and theoretical data which belongs to the manuscript "Nonlinear down-conversion in a single quantum dot" by B. Jonas, D. Heinze, E. Schöll, P. Kallert, T. Langer, S. Krehs, A. Widhalm, K. D. J…
View article: Nonlinear down-conversion in a single quantum dot
Nonlinear down-conversion in a single quantum dot Open
This repository contains original experimental and theoretical data which belongs to the manuscript "Nonlinear down-conversion in a single quantum dot" by B. Jonas, D. Heinze, E. Schöll, P. Kallert, T. Langer, S. Krehs, A. Widhalm, K. D. J…
View article: Optoelectronic sampling of ultrafast electric transients with single quantum dots
Optoelectronic sampling of ultrafast electric transients with single quantum dots Open
In our work, we have engineered low capacitance single quantum dot photodiodes as sensor devices for the optoelectronic sampling of ultrafast electric signals. By the Stark effect, a time-dependent electric signal is converted into a time-…
View article: Impact of carbon-ion implantation on the nonlinear optical susceptibility of LiNbO_3
Impact of carbon-ion implantation on the nonlinear optical susceptibility of LiNbO_3 Open
In this work we study the impact of ion implantation on the nonlinear optical properties in MgO:LiNbO3 via confocal second-harmonic microscopy. In detail, we spatially characterize the nonlinear susceptibility in carbon-ion impl…