Quantum optics cryogenic laboratory
The quantum optics laboratory comprises a closed cycle cryogenic and low vibration probe station with optical access, coupled to laser excitation (from green to near infrared, pulsed and continuous) and collection path. Two spectrometers are present covering from green to telecom wavelengths (CCD and InGaAs array) and a photon correlation set-up allows to probe single and entangled photon emission in the near infrared (~700-960 nm). Two photon resonant pumping set-up available in some limited wavelength windows.
Dry cryogenic cryostat and probe-station, low vibrations, pulsed optical pumping, correlation spectroscopy
Sample size: 1cm×1cm max
Pumping suite: Suite of lasers covering visible to near infrared.
Tuneable pulsed excitation with femtosecond Ti-Saph laser, pulsed shaping to ps available.
Probe-station vertical vibrations below a few tens of nm
Lowest T achievable: 6K
- Nano for Quantum Technologies
Key Enabling Capability
- Metrology / Characterisation: Optical characterisation
Entangled photon emission from quantum dots has been demonstrated:
[DOI: 10.1038/nphoton.2013.128] and [DOI: 10.1038/nphoton.2016.203]