SKM 2021 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 27: Topological Insulators and Semimetals (joint session TT/KFM)

TT 27.5: Talk

Friday, October 1, 2021, 11:15–11:30, H7

Twisted and chiral photon states scattered on chiral molecular liquids — Silvia Müllner¹, Florian Büscher¹, Dirk Wulferding², Yurii G. Pashkevich^1,3, Vladimir Gnezdilov^1,4, Anton A. Pechkov⁵, Andrey Surzhykov⁵, and •Peter Lemmens¹ — ¹IPKM, TU Braunschweig, Germany — ²CCES, Inst. for Basic Science, Seoul, Republic of Korea — ³O.O. Galkin Donetsk Inst. for PaE, NASU, Kyiv - Kharkiv, Ukraine — ⁴B. Verkin Inst. for Low Temp. Phys and Eng., NASU, Kharkiv, Ukraine — ⁵Inst. Math. Phys., TU Braunschweig and PTB, Braunschweig, Germany

Twisted or structured light [1] has been recognized as a novel probe of chiral states of matter. The respective light matter coupling is still discussed controversially. Using resonant light-matter coupling of twisted and chiral photon states [1] to chiral molecular liquids we study their inelastic response. For this instance, quasi-elastic Raman scattering (QES) is investigated in isotropic, nematic and chiral nematic phases of liquid crystals. The response is diffusive and dominated by a narrow distribution or single relaxation rate.

We acknowledge important discussions with G. Napoli (Univ. del Salento, Lecce). This research was funded by the DFG Excellence Cluster QuantumFrontiers, EXC 2123, DFG Le967/16-1, DFG-RTG 1952/1, and the Quantum- and Nano-Metrology (QUANOMET) initiative of Lower Saxony within project NL-4.
[1] H. Rubinsztein-Dunlop, et al., Journ. Opt. 19, 013001 (2017)