Bistable Spin Currents from Quantum Dots Embedded in a Microcavity

Details Bistable Spin Currents from Quantum Dots Embedded in a Microcavity Bistable Spin Currents from Quantum Dots Embedded in a Microcavity

2006-11-10

arxiv.org/abs/cond-mat/0611288v3

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

New version includes revised figures and discussion of results

Scientific paper

We examine the spin current generated by quantum dots embedded in an optical microcavity. The dots are connected to leads, which allow electrons to tunnel into and out of the dot. The spin current is generated by spin flip transitions induced by a quantized electromagnetic field inside the cavity with one of the Zeeman states lying below the Fermi level of the leads and the other above. In the limit of strong Coulomb blockade, this model is analogous to the Jaynes-Cummings model in quantum optics. We find that the cavity field amplitude and the spin current exhibit bistability as a function of the laser amplitude, which is driving the cavity mode. Even in the limit of a single dot, the spin current and the Q distribution of the cavity field have a bimodal structure.

Affiliated with

Also associated with

No associations

Rating

Bistable Spin Currents from Quantum Dots Embedded in a Microcavity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Bistable Spin Currents from Quantum Dots Embedded in a Microcavity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bistable Spin Currents from Quantum Dots Embedded in a Microcavity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-566062