The AWG-5000 Arbitrary Waveform Generator and  PG-1072 Fast Pulse Generator have been adopted by the research group Fundamental of Optics and Photonics led by Prof. Rauschenbeutel at the Humboldt University in Berlin.

Collective Radiative Dynamics of an Ensemble of Cold Atoms Coupled
to an Optical Waveguide

Riccardo Pennetta – Postdoctoral fellow in NanoFiRe Lab –

The research group Fundamental of Optics and Photonics led by Prof. Rauschenbeutel at the Humboldt University in Berlin investigates light-matter coupling between ensembles of cold atoms and photons propagating in so-called optical nanofibers, i.e., glass fibers whose diameter is smaller than the optical wavelength. The special properties of these fibers make them suitable for use as a “quantum laboratory”.

Recently, the team has investigated the super  and subradiant dynamics of the nanofiber coupled atomic ensembles. This was done by exciting the atoms via short laser pulses generated by driving an electro-optic modulator with the AWG-5000 Arbitrary Waveform Generator by Active Technologies. The generated box-car shaped optical pulses had a rise-time of less than one nanosecond, which is much less than the excited state lifetime of the atoms in the ensemble and therefore ideal for these experiments.

Riccardo Pennetta is a postdoctoral fellow working the NanoFiRe Lab, in which optical nanofibers are employed to investigate the so-called multi-mode strong coupling regime of cavity quantum electrodynamics. This novel and experimentally unexplored regime promises a number of application in quantum information processing and the generation of non-classical states of light.

R. Pennetta, M. Blaha, A. Johnson, D. Lechner, P. Schneeweiss, J. Volz and A. Rauschenbeutel
Collective radiative dynamics of an ensemble of cold atoms coupled to an optical waveguide
Physical Review Letters, 128, 073601 (2022) [Editor’s pick]

The full paper is available HERE

The AWG-5000 can generate sub-nanosecond pulses down to 230 ps reaching a voltage amplitude of 5Vpp on 50 ohm load and fast rise and fall time smaller than 110 ps. The pulses can be generated with any arbitrary shape giving the user the maximum of the flexibility in all the experiment conditions.

The PG-1072 pulse generator can generate sub-nanosecond pulses down to 300ps reaching a voltage amplitude of 5Vpp on 50 ohm load and fast rise and fall time smaller than 70 ps. The fast repetition rate up to 800MHz and the 10ps step resolution, allow the instrument to adjust the pulse width from 300ps up to greater than 1 second.

Ferrara – Italy, 25.10.2023