Major Equipment
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Major Equipment
Quantum Photonic Microscope
The Quantum Photonic Microscope (QPM) enables the investigation of quantum optical phenomena in light-matter coupled systems, including single quantum dots and atomically thin crystals. The setup combines a low-vibration, liquid helium-free attoDRY800 cryostat with high-resolution optical microscopy and a tunable mode-locked laser system, providing stable measurements at temperatures down to 4 K. Its ID Quantique superconducting nanowire single-photon detectors offer high detection efficiency and exceptionally low timing jitter, enabling time-resolved measurements of quantum coherence and photon correlations on picosecond timescales. The QPM is used to study single-photon sources, quantum emitters in two-dimensional materials, and moiré excitons in semiconductor heterostructures.
FUGG 184 / 234-1
Closed Cycle Cryostat for Spectroscopy Applications
The QMat group operates a liquid Helium-free cryostat for highly sensitive magneto-optical studies. The system is based on the attoDRY1000 model, which is a closed-cycle cryostat specifically designed for low-vibration cryogenic confocal microscopy. The system can be operated within a temperature from 3.8 K to 80 K. A controlled exchange gas atmosphere cools the optional microscope inserts, enabling sensitive measurements. The system is equipped with a superconducting magnet up to 9 T. Its compatibility with an open optical cavity, that was developed in the QMat group, provides versatility, enabling seamless integration of various experimental configurations. In free-beam confocal measurements, the lateral vibrations are minimized to approximately 50 nm and vertical vibrations < 1 nm.