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The integration of single-photon and photon-number-resolving detectors with single-photon sources and passive circuits is essential to realise fully-functional quantum photonic integrated circuits. We have recently demonstrated the first waveguide single photon detectors (WSPDs) [1] and a polarisation-independent on-chip autocorrelator for the measurement of the second-order correlation function g...
Progress towards the development of a quantum integrated photonics platform on GaAs will be reported, including on-chip single photon sources, detectors, splitters, couplers and modulators.
We report the first waveguide single-photon detectors. They are based on superconducting nanowires patterned on top of GaAs/AlGaAs waveguides and are suitable for monolithic integration with single-photon sources and passive quantum optical networks.
The combination of structures with low-dimensional electronic confinement (quantum dots/dashes/wells) and photonic crystals in semiconductor lasers allows the integration of additional optical functionality in a very compact manner. In addition to providing ultimate control over the electronic and photonic states in the device, there are also practical benefits from this combination. The compact footprint...
We report on the high-temperature performance of high-power GalnNAs broad area laser diodes with different waveguide designs emitting in the 1220-1240-nm wavelength range. Large optical cavity laser structures enable a maximum continuous-wave output power of >8.9 W at T = 20degC with emission at 1220 nm and are characterized by low internal losses of 0.5 cm-1 compared to 2.9 cm-1 for the conventional...
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