(SEMINAR) Michał Karpiński, PhD, Faculty of Physics, University of Warsaw

event date: 10 May 2024

The Centre of New Technologies, University of Warsaw invites to a seminar by

Michał Karpiński, PhD

Faculty of Physics, University of Warsaw

Spectral shaping of single-photon pulses

Date: 10th May2024, Friday

Time: 12:00 pm (Central European Time)

Host: Silvio Osella, PhD, DSc

The seminar will be in the CeNT aula hall (00.142) on the main floor.


Thanks to the quantum mechanical superposition principle single photons do not need to have a well-defined frequency, or well-defined energy. They can be characterized by a probability distribution of frequencies, which may be analogous to an optical spectrum of a classical optical signal. I will introduce and discuss experimental methods to modify the spectral properties of optical single photons and discuss their applications in optical quantum technologies and quantum networks. In particular, I will present an approach to modify the spectral bandwidth and duration of single photons by more than two orders of magnitude, reaching the bandwidths characteristic of material single-photon emitters [1].


[1] F Sośnicki, M Mikołajczyk, A Golestani, M Karpiński, Interface between picosecond and nanosecond quantum light pulses, Nature Photonics 17, 761-766 (2023).