Bose–Einstein condensation of magnetoexcitons in ideal two-dimensional system in a strong magnetic field

2004 ◽  
Vol 346-347 ◽  
pp. 460-464 ◽  
Author(s):  
V.V. Boţan ◽  
M.A. Liberman ◽  
S.A. Moskalenko ◽  
D.W. Snoke ◽  
B. Johansson
Keyword(s):  
Magnetic Field ◽  
Strong Magnetic Field ◽  
Einstein Condensation ◽  
Dimensional System ◽  
Two Dimensional ◽  
Bose Einstein Condensation ◽  
Two Dimensional System ◽  
Bose Einstein

Bose–Einstein condensation and superfluidity of trapped polaritons in graphene and quantum wells embedded in a microcavity

2010 ◽  
Vol 368 (1932) ◽  
pp. 5459-5482 ◽  
Author(s):  
Oleg L. Berman ◽  
Roman Ya. Kezerashvili ◽  
Yurii E. Lozovik ◽  
David W. Snoke
Keyword(s):  
Magnetic Field ◽  
Quantum Wells ◽  
Einstein Condensation ◽  
Two Dimensional ◽  
Rabi Splitting ◽  
Graphene Layers ◽  
Bose Einstein Condensation ◽  
Optical Microcavity ◽  
Superfluid Fraction ◽  
Bose Einstein

The theory for spontaneous coherence of short-lived quasiparticles in two-dimensional excitonic systems is reviewed, in particular, quantum wells (QWs) and graphene layers (GLs) embedded in microcavities. Experiments with polaritons in an optical microcavity have already shown evidence of Bose–Einstein condensation (BEC) in the lowest quantum state in a harmonic trap. The theory of BEC and superfluidity of the microcavity excitonic polaritons in a harmonic potential trap is presented. Along the way, we determine a general method for defining the superfluid fraction in a two-dimensional trap, within the angular momentum representation. We discuss BEC of magnetoexcitonic polaritons (magnetopolaritons) in a QW and GL embedded in an optical microcavity in high magnetic field. It is shown that Rabi splitting in graphene is tunable by the external magnetic field B , while in a QW the Rabi splitting does not depend on the magnetic field in the strong B  limit.

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