Details

Autor(en) / Beteiligte

• Mukherjee, S.
• Myers, D. M.
• Lena, R. G.
• Ozden, B.
• Beaumariage, J.
• Sun, Z.
• Steger, M.
• Pfeiffer, L. N.
• West, K.
• Daley, A. J.
• Snoke, D. W.

Titel

Observation of nonequilibrium motion and equilibration in polariton rings

Ist Teil von

• Physical review. B, 2019-12, Vol.100 (24), p.1, Article 245304

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2019

Quelle

APS: American Physical Society E-Journals (Physics)

Beschreibungen/Notizen

• We present a study of the macroscopic dynamics of a polariton condensate formed by nonresonant optical excitation in a quasi-one-dimensional ring-shaped microcavity. The presence of a gradient in the cavity photon energy creates a macroscopic trap for the polaritons in which a coherent condensate is formed which evolves into a single-mode condensate at late times. With time- and energy-resolved imaging we show the role of interactions in the motion of the condensate as it undergoes equilibration in the ring. These experiments also give a direct measurement of the polariton-polariton interaction strength above the condensation threshold. Our observations are compared to the open-dissipative one-dimensional Gross-Pitaevskii equation which shows excellent qualitative agreement.