Spin-Dependent Polaritonic Flip-Flop Operation in Semiconductor Microcavity

Abstract

An optical flip-flop operation (FFO) method using bistable characteristic of microcavity polaritons is studied theoretically. Through introduction and combination of triggering optical pulses with different polarizations, both intensity and polarization FFOs of polaritons are realized separately or simultaneously taking advantages of the spin-dependent characteristic of polaritons. In addition, influence of amplitude or width of the optical pulses is also discussed so as to optimize switching time of FFO. and also as a Chang-Jiang Chair Professor in Optical Engineering. His recent research interests include fiber-optic sensors and systems, fiber-optic devices for communicatios, micro and nano optical fibers, microstructured optical fibers. 0733-8724 (c)

Stochastic and deterministic switches in a bistable polariton micropillar under short optical pulses

“…This regime is consistent with switching discussed in Ref. [9]. Now let us consider the regime when τ ∼ T .…”

“…Their exact number depends on pump polarization because the interaction between polaritons is spin-sensitive: polaritons with parallel spins strongly repel each other. Varying excitation involves transitions between steady states, and a number of other switching mechanisms were proposed as well, based on short optical or acoustic pulses acting as switch triggers [7][8][9][10]. In the general case, the switch has the shape of a sharp jump followed by decaying transient oscillations.…”