Events

Filter by:

Limit to events where the first date of the event:
Date range
Limit to events where the first date of the event:
Limit to events where the title matches:
Limit to events where the type is one or more of:
Limit to events tagged with one or more of:
Limit to events where the audience is one or more of:

Abstract

Semiconductor quantum dots provide a versatile and potentially scalable mechanism for manipulating quantum information encoded in discrete orbital and spin degrees of freedom. I will review the state-of-the-art in current developments in this field (leading to fast control on a scale of 200 picoseconds and very long memory times in excess of 200 microseconds).

Abstract

Evidence is presented for the finite wave vector crossing of the two lowest one-dimensional spin-split subbands in quantum point contacts fabricated from two-dimensional hole gases with strong spin-orbit interaction. This phenomenon offers an elegant explanation for the anomalous sign of the spin polarization filtered by a point contact, as observed in magnetic focusing experiments. Anticrossing is introduced by a magnetic field parallel to the channel or an asymmetric potential transverse to it.