The qoss lab

EQUIPMENT & TECHNIQUES

The lab is 35 squared meters containing: two optical tables, two spectrometres and CCDs (one half-meter PI spectrometer + Pixis 1024 CCD, one Shamrock 750 + iKonM CCD), one helium-flow cryostat Janis ST500 (the UAM has a He-liquefactor with recovery lines), two setups (for cryo- and RT-experiments), one Matisse Ti:Saph laser, two He-Ne lasers, 2 free-space APDs, 2 fibered Thorlabs APDs (high QE, high jitter time), 2 fibered MPD APDs (low QE, low jitter time), one Picoharp 300, one Multi-Channel (8) QuTools correlator, XYZ closed-loop RT attocube nanopositioners.

We perform different experiments for the (classical and quantum) characterisation of light emitted from different quantum materials:

• Micro-photoluminescence spectroscopy (cryo and RT)

• Michelson and Mach-Zenhder interferometry: first order correlation function g(1) (as a function of time and space)

• Hanbury Brown & Twiss interferometry: second order correlation function g(2) (measureable in free space, SM- and MM-fiber)

• Hong-Ou-Mandel interferometry: two-photon interference to characterise the degree of photon indistinguishability

• Open-cavity systems: nanomotor assembly to couple microcavity photons to different quantum materials