abstract

• We demonstrate that the tunable potential introduced by a surface acoustic wave on a homogeneous polariton condensate leads to fragmentation of the condensate into an array of wires which move with the acoustic velocity. Reduction of the spatial coherence of the condensate emission along the surface acoustic wave direction is attributed to the suppression of coupling between the spatially modulated condensates. Interparticle interactions observed at high polariton densities screen the acoustic potential, partially reversing its effect on spatial coherence. © 2010 The American Physical Society.

authors

• Biermann K.
• Bradley R.
• Cerda Méndez Edgar Armando
• Guda K.
• Hey R.
• Krizhanovskii D.N.
• Santos P.V.
• Sarkar D.
• Skolnick M.S.
• Wouters M.

publication date

• 2010-01-01

funding provided via

• Engineering and Physical Sciences Research Council, EPSRC: EP/E051448/1, EP/H023259/1  Grant

published in

• Physical Review Letters  Journal

keywords

• Acoustic lattices; Acoustic potential; Acoustic velocity; Inter-particle interaction; Polaritons; Spatial coherence; Surface acoustic waves; Acoustic surface wave devices; Acoustics; Acoustoelectric effects; Association reactions; Phonons; Photons; Quantum theory; Acoustic waves

Digital Object Identifier (DOI)

• 10.1103/PhysRevLett.105.116402

start page

end page

volume

• 105

issue

• 11