Nonlinear quantum photonics

Head of the Group

Marcin Syperek
office: 231B, A-1
phone: +48 71 320 30 02

Maciej Pieczarka
office: 231B, A-1
phone: +48 71 320 30 02

The Nonlinear Quantum Photonics (NQP) group was established in 2019 as a part of the OSN. We focus on exploring and engineering fundamental properties of novel quantum materials that can be probed by means of optical spectroscopy tools. Our research also has application-oriented component that can lead to development of novel optoelectronic devices.

Quantum photonics

Our research focuses on developing the quantum dots technology to obtain well controllable quantum states generators compatible with the Si‑based silicon photonic platform and the existing silica fibre‑based optical networks operating in the third telecom window (emission at 1550 nm). In our group, we are developing the quantum states generators and investigating their optical properties in order to assess their potential for quantum photonic applications.

Light-matter coupling

Fundamental interaction of light and matter can lead to emerging of new particles called polaritons. These bosonic in nature particles can condensate to a single macroscopic quantum state and can have fascinating properties. In our research, we focus on the properties of polaritons generated in semiconductor microcavities and try to transfer the fundamental knowledge towards real‑life applications of polaritonic devices. In this case, we developed a unique spectroscopic technique that allows probing polaritonic states in the near‑infrared spectral range.

Novel 2D semiconductors and topological materials controlled by the light field

Among the countless 2D materials obtained to date, the 2D transition metal dichalcogenide (TMDC) semiconductors, with their most recognisable members MoS2, MoSe2, WS2, WSe2, are intensively studied, showing new exciting physical phenomena promising future generation of low‑energy consumption, nanoscale and efficient optoelectronic devices. In our research, we particularly focused on the fundamental properties of MoTe2 belonging to the TMDC family since it is the only material that can be potentially utilised in TMDC‑based optoelectronic devices operating in the practically relevant near‑infrared spectral range (above 1 μm). Lately, we have expanded our interest to other 2D materials revealing topological nature (bismuthene) and being able to interact with the infrared photon field even at room temperature.

Excitations dynamics in novel optoelectronic materials

Quantum wells and bulk semiconductor materials are still considered as a gain medium for lasers and amplifiers. There is plenty of ongoing research on the development of new material combinations that can fulfil application‑relevant requirements. In our group, we have developed several spectroscopic setups able to probe fundamental excitation in these new materials with a particular focus on excitation dynamics that can occur in the picosecond time scale.

Projects
Group members