NMR quantum lab
Our laboratory comprises three different workstations, each of them characterized by a different magnet but, all of them, equipped with the homemade broadband NMR spectrometer ’HyReSpect’ [G. Allodi, et al., Rev. Sci. Instrum. 76, 08391 (2005)]. The spectrometer features heterodyne-based pulser and receiver with four-quadrant phase shifting and quadrature detection. Fast RF switching, broadband receiver stage, wide frequency span and fast signal averaging are fundamental requirements for the investigation of hyperfine resonances in magnetic materials. Because of these characteristics the ‘HyReSpect’ spectrometer is an ideal instrument for the excitation and detection of short-living spin echoes over the frequency range of interest (S. Chicco, et al., NCC, 2022, 2037-4909. pp. 163.1-163.4). It has been recently equipped with a fast state-of-the-art Arbitrary Waveform Generator (Arb Rider AWG-5062D) from Active Technologies for the implementation of the complex pulse sequences required in quantum computation and quantum simulation algorithms.
EXA
The MaglabEXA is a cryostat enabling to reach temperatures as low as 1.5 K, equipped with a 9 T superconductive solenoid magnet. The cryomagnet is cooled down with liquid elium, provided by the recently installed liquifying facility in our infrastructure. The cryomagnet is used for low temperature broadband NMR experiment, with the "HyReSpect" spectrometer. The sample environment can host different home-made NMR probes, covering the wide range from 10 to 800 MHz and enabling multi-frequency experiments.
Magnete Blu
Room Temperature Magnet and Laser
The NMR probes for the magnet have been recently equipped with a optical fiber, connectet to a state-of-the-art SpitLight EVO S OPO laser, for time resolved NMR measurements, under laser irradiation. The laser emission is pulsed into nanosecond laser pulses with repetition rates from 1 Hz up to 1000 Hz and the wavelenght of each pulse can be chosen whithin a wide range from 410 to 2500 nm.
Cooming soon: 5mK Dilution Refrigerator
Starting from spring 2024, the NMR quantum lab will host a new state of the art Dilution Refrigerator from Leiden Cryogenics, equiped with a 6 T superconducting magnet. This new equipement will enable to reach cryogenic temperatures of 7 mK, sufficient for thermal initialization of molecular qubits-qudits for quantum algorithms and quantum simulation purpouses. Moreover, combining this cryostat with our broadband NMR spectrometer, will enable to study relaxation and decoherence of prototypical molecular qubits in a yet unexplored temperature regime.
