3 papers
cond-mat.quant-gas2020
Observation of a non-Hermitian phase transition in an optical quantum gas
Fahri Emre Öztürk, Tim Lappe, Göran Hellmann +5
Quantum gases of light, as photons or polariton condensates in optical microcavities, are collective quantum systems enabling a tailoring of dissipation from e.g. cavity loss. This…
quant-ph2019
Fluctuation dynamics of an open photon Bose-Einstein condensate
Fahri Emre Ozturk, Tim Lappe, Goran Hellmann +5
Bosonic gases coupled to a particle reservoir have proven to support a regime of operation where Bose-Einstein condensation coexists with unusually large particle-number fluctuatio…
cond-mat.quant-gas2018
Fluctuation-damping of isolated, oscillating Bose-Einstein condensates
Tim Lappe, Anna Posazhennikova, Johann Kroha
Experiments on the nonequilibrium dynamics of an isolated Bose-Einstein condensate (BEC) in a magnetic double-well trap exhibit a puzzling divergence: While some show dissipation-f…