Selective excitation and detection of spin states in a single nanowire quantum dot

Maarten H M van Weert; Nika Akopian; Umberto Perinetti; Maarten P van Kouwen; Rienk E Algra; Marcel A Verheijen; Erik P A M Bakkers; Leo P Kouwenhoven; Val Zwiller

doi:10.1021/nl900250g

Selective excitation and detection of spin states in a single nanowire quantum dot

Nano Lett. 2009 May;9(5):1989-93. doi: 10.1021/nl900250g.

Authors

Maarten H M van Weert¹, Nika Akopian, Umberto Perinetti, Maarten P van Kouwen, Rienk E Algra, Marcel A Verheijen, Erik P A M Bakkers, Leo P Kouwenhoven, Val Zwiller

Affiliation

¹ Kavli Institute of Nanoscience, Delft, The Netherlands.

PMID: 19341258
DOI: 10.1021/nl900250g

Abstract

We report exciton spin memory in a single InAs(0.25)P(0.75) quantum dot embedded in an InP nanowire. By synthesizing clean quantum dots with linewidths as narrow as about 30 microeV, we are able to resolve individual spin states at magnetic fields on the order of 1 T. We can prepare a given spin state by tuning excitation polarization or excitation energy. These experiments demonstrate the potential of this system to form a quantum interface between photons and electrons.

Publication types

Research Support, Non-U.S. Gov't