arXiv subjects

G. Giavaras

Publications and source records attributed to G. Giavaras.

20 records · Page 2Linked to original sources

arXiv2006

Singlet-triplet filtering and entanglement in a quantum dot structure

We consider two interacting electrons in a semiconductor quantum dot structure which consists of a small dot within a larger dot, and demonstrate a singlet-triplet filtering mechanism which involves spin-dependent resonances and can generate entanglement. By studying the exact time evolution of singlet and triplet states we show how the degree of both filtering and spin entanglement can be tuned using a time-dependent gate voltage.

cond-mat.mes-hall↗

arXiv2006

Quantum entanglement generation with surface acoustic waves

We propose a scheme to produce spin entangled states for two interacting electrons. One electron is bound in a well in a semiconductor quantum wire and the second electron is transported along the wire, trapped in a surface acoustic wave potential (SAW) minimum. We investigate the conditions for which the Coulomb interaction between the two electrons induces entanglement. Detailed numerical investigation reveals that the two electrons can be fully spin entangled depending on the confinement characteristics of the well and the SAW potential amplitude.

cond-mat.mes-hall↗