3 research outputs found
Cancer du sein et mastectomie : se re-connaître dans la maladie et dans un corps différent.
Supplementary Information Originally published in Optica on 20 May 2017 (optica-4-5-557
Supplementary document for Resource-efficient low-loss four-channel active demultiplexer for single photons - 6555066.pdf
Supplemental documen
Cavity-Enhanced and Ultrafast Superconducting Single-Photon Detectors
Ultrafast
single-photon detectors with high efficiency are of utmost
importance for many applications in the context of integrated quantum
photonic circuits. Detectors based on superconductor nanowires attached
to optical waveguides are particularly appealing for this purpose.
However, their speed is limited because the required high absorption
efficiency necessitates long nanowires deposited on top of the waveguide.
This enhances the kinetic inductance and makes the detectors slow.
Here, we solve this problem by aligning the nanowire, contrary to
usual choice, perpendicular to the waveguide to realize devices with
a length below 1 μm. By integrating
the nanowire into a photonic crystal cavity, we recover high absorption
efficiency, thus enhancing the detection efficiency by more than an
order of magnitude. Our cavity enhanced superconducting nanowire detectors
are fully embedded in silicon nanophotonic circuits and efficiently
detect single photons at telecom wavelengths. The detectors possess
subnanosecond decay (∼120 ps) and recovery times (∼510
ps) and thus show potential for GHz count rates at low timing jitter
(∼32 ps). The small absorption volume allows efficient threshold
multiphoton detection