V001 / JSI / T1039

News Archive

Sara Klopčič, Aljaž Kavčič in dr. Matjaž Humar from Lab for biophotonics, soft photonics and quantum optics and Condensed matter physics department at Jožef Stefan Institute and Faculty of Mathematics and Physics at the University of Ljubljana have together with Dr. Nerea Sebastian from Department of Complex Matter demonstrated, in a recently published article Electrically and Geometrically Tunable Photon Pair Entanglement from Ferroelectric Nematic Liquid Crystal in Advanced Science, that quantum-entangled photon pairs can be generated in ferroelectric nematic liquid crystals (FNLCs), while simultaneously allowing continuous control over the degree of quantum entanglement. This control can be achieved by adjusting the sample thickness and molecular twist, or in real-time by applying an external electric field. Such continuous and real-time tunability represents an important advantage of liquid crystals over classical solid nonlinear crystals and paves the way for the development of so-called quantum displays.