Search by tag «Optics Express» 3 results

• ITMO Researchers Suggest New Way to Improve Quantum Encryption in Optical Fiber Communication Lines

  Staff members of the Laboratory of Quantum Processes and Measurements have found the cause of errors that occur on subcarrier frequencies in quantum key distribution (QKD) systems – as well as a way to eliminate it. Their research was published in Optics Express. 

  19.10.2020

• ITMO Researchers Develop Alternative Liquid-Based THz Radiation Source

   Polar liquids, such as water, are powerful absorbents of electromagnetic waves in the terahertz range. For that reason, they were never considered as potential THz radiation sources. Last year, researchers from ITMO University and the University of Rochester proved that liquid-based radiation sources can be no less effective than traditional ones. In their new study, the staff of ITMO University’s Laboratory of Femtosecond Optics and Femtotechnologies present their research on the generation of THz radiation in liquid jets of various kinds. In the future, these findings can be used to create new alternative sources of THz radiation. The research was published in Optics Express.

  03.06.2019

• ITMO Scientists Make First-Ever Measurement of Nonlinearity in Terahertz Frequency Range

  Researchers from ITMO University have, for the first time in history, managed to directly measure the nonlinear refractive index of matter in the terahertz range. The results of their experiments were compared with previously existing theoretical predictions in order to confirm the presence of nonlinear effects. The obtained data can be used to control light, as well as in fundamental and biomedical research. The results have been published in Optics Express.

  27.05.2019