Optically induced entanglement of excitons in a single quantum Dot
Optically induced entanglement is identified by the spectrum of the phase-sensitive homodyne-detected coherent nonlinear optical response in a single gallium arsenide quantum dot. The electron-hole entanglement involves two magneto-excitonic states differing in transition energy and polarization. The strong coupling needed for entanglement is provided through the Coulomb interaction involving the electrons and holes. The result presents a first step toward the optical realization of quantum logic operations using two or more quantum dots.
Chen
G
Harrison M. Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109-1120, USA. The Naval Research Laboratory, Washington, DC 20375, USA. Department of Physics, University of California San Diego, La Jolla, CA 92093-0319,
Bonadeo
NH
Steel
DG
Gammon
D
Katzer
DS
Park
D
Sham
LJ