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Sub-picosecond thermalization dynamics in condensation of strongly coupled lattice plasmons.

ABSTRACT: Bosonic condensates offer exciting prospects for studies of non-equilibrium quantum dynamics. Understanding the dynamics is particularly challenging in the sub-picosecond timescales typical for room temperature luminous driven-dissipative condensates. Here we combine a lattice of plasmonic nanoparticles with dye molecule solution at the strong coupling regime, and pump the molecules optically. The emitted light reveals three distinct regimes: one-dimensional lasing, incomplete stimulated thermalization, and two-dimensional multimode condensation. The condensate is achieved by matching the thermalization rate with the lattice size and occurs only for pump pulse durations below a critical value. Our results give access to control and monitoring of thermalization processes and condensate formation at sub-picosecond timescale.

SUBMITTER: Vakevainen AI

PROVIDER: S-EPMC7305221 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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Sub-picosecond thermalization dynamics in condensation of strongly coupled lattice plasmons.

Väkeväinen Aaro I AI Moilanen Antti J AJ Nečada Marek M Hakala Tommi K TK Daskalakis Konstantinos S KS Törmä Päivi P

Nature communications 20200619 1

Bosonic condensates offer exciting prospects for studies of non-equilibrium quantum dynamics. Understanding the dynamics is particularly challenging in the sub-picosecond timescales typical for room temperature luminous driven-dissipative condensates. Here we combine a lattice of plasmonic nanoparticles with dye molecule solution at the strong coupling regime, and pump the molecules optically. The emitted light reveals three distinct regimes: one-dimensional lasing, incomplete stimulated thermal ...[more]

PMID: 32561728

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