Coupling and entangling of quantum states in quantum dot molecules.
Science
; 291(5503): 451-3, 2001 Jan 19.
Article
em En
| MEDLINE
| ID: mdl-11161192
ABSTRACT
We demonstrate coupling and entangling of quantum states in a pair of vertically aligned, self-assembled quantum dots by studying the emission of an interacting electron-hole pair (exciton) in a single dot molecule as a function of the separation between the dots. An interaction-induced energy splitting of the exciton is observed that exceeds 30 millielectron volts for a dot layer separation of 4 nanometers. The results are interpreted by mapping the tunneling of a particle in a double dot to the problem of a single spin. The electron-hole complex is shown to be equivalent to entangled states of two interacting spins.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Science
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
Alemanha