Electric-field and temperature tuning of exciton-photon coupling in quantum microcavity structures

Impact of lateral carrier confinement on electro-optical tuning properties of polariton condensates

“…4(c). Both curves show the expected behavior of decreasing energy 16 and splitting 18 with increasing field, and they are in good agreement with the calculated values up to an electric field of 120kV=cm: For the exciton, we calculate the shift DE ¼ ÀajFj 2 according to Ref. 27.…”

“…17 Furthermore, the exciton oscillator strength decreases due to decreasing overlap of electron and hole wavefunctions which reduces the Rabi splitting. 18 This causes a blueshift of the polariton emission, but usually the redshift dominates. In a recent study 19 of the polariton emission below and above condensation threshold, surprisingly, a significant blueshift was observed with increasing electric field.…”

Phonon-Induced Polariton Superlattices

“…The enhanced coherence has motivated basic investigations of micro-optical parametric oscillators [4] as well as ultrafast optical amplifiers [5]. Successful tuning of MC polaritons, without changing their dimensionality, has been demonstrated using static electric [6] and strain fields [7]. Conversely, the static reduction of polariton dimensionality using lithographically defined structuring has also been reported [8][9][10][11].…”

Oriented polaritons in strongly-coupled asymmetric double quantum well microcavities

“…Solving the Schrödinger equation using complex Airy functions [23] and suitable material parameters [25] yields complex eigenvalues where the real part is the quasiconfined energy level and the imaginary part is related to the carrier escape time. Compared to weak field tuning [24] of single QWs used in previous microcavities (black lines), a new level structure is revealed [ Fig. 1(c)].…”