Far-from-equilibrium dynamics of angular momentum in a quantum many-particle system

Autor:	Cherepanov, Igor N., Bighin, Giacomo, Christiansen, Lars, Jørgensen, Anders Vestergaard, Schmidt, Richard, Stapelfeldt, Henrik, Lemeshko, Mikhail
Rok vydání:	2019
Předmět:	Physics - Atomic and Molecular Clusters Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Quantum Gases Physics - Atomic Physics Physics - Chemical Physics
Druh dokumentu:	Working Paper
Popis:	We use laser-induced rotation of single molecules embedded in superfluid helium nanodroplets to reveal angular momentum dynamics and transfer in a controlled setting, under far-from-equilibrium conditions. As an unexpected result, we observe pronounced oscillations of time-dependent molecular alignment that have no counterpart in gas-phase molecules. Angulon theory reveals that these oscillations originate from the unique rotational structure of molecules in He droplets and quantum-state-specific transfer of rotational angular momentum to the many-body He environment on picosecond timescales. Our results pave the way to understanding collective effects of macroscopic angular momentum exchange in solid state systems in a bottom-up fashion. Comment: 5+9 pages, 3+1 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1906.12238 Zobrazit plný text záznamu View this record from Arxiv