• Physics and Astronomy Colloquium

January 23, 2026 3:30 PM - January 23, 2026 4:30 PM
PAIS 1100

Host:

Dr. Denis Seletskiy

Presenter:

Prof. Val Zwiller (KTH Royal Institute of Technology Stockholm, Sweden)

Video Recording

Future quantum communication and sensing require high-performance quantum devices that can generate and detect light one photon at a time. With our semiconductor based single photon sources based we generate single and entangled photons at telecom wavelengths and operate a quantum network made of deployed optical fibers that can demonstrate single photon transmission and quantum key generation over large distances. Single photon detectors with high detection efficiency, low noise and high time resolution are major enabling techniques. We develop superconducting nanowire single photon detectors with applications in quantum photonics, communication, integrated quantum circuits as well as lidar. We will discuss our latest results for quantum microscopy with SNSPDs with the capability for providing spectral and statistical information in one measurement.

About Prof. Val Zwiller

Val Zwiller Val Zwiller got his PhD in 2001 from Lund University on single photon generation with quantum dots. He worked at the Humboldt University in Berlin, EPFL and ETH in Switzerland before joining TU Delft in 2006 as an assistant professor. He co-founded Single Quantum in 2012, a company supplying high-performance single photon detectors. He has been a professor at the Royal Institute of Technology in Stockholm since 2015.