Title :
An optically induced and detected Bell-like state in a single quantum dot
Author :
Gang Chen ; Batteh, E.T. ; Xiaoqin Li ; Steel, D.G. ; Gammon, D. ; Sham, L.J.
Author_Institution :
Randall Lab. of Phys., Michigan Univ., Ann Arbor, MI, USA
Abstract :
Summary form only given. A single quantum dot (QD) exciton is considered as a basic unit capable of carrying one bit of quantum information (qubit). Reference has demonstrated exciton Rabi oscillations in single QD´s that are equivalent to single-bit rotations. To realize two-bit quantum logic operations in the next step, it is essential to identify and coherently manipulate two interacting single QD excitons. Our earlier work shows that two-exciton entangled states not involving the biexciton can be optically induced. This paper extends the entanglement to include the biexciton and show that all four basis states of the two-exciton system can be coherently manipulated based on a coherent nonlinear optical spectroscopy technique.
Keywords :
Bell theorem; excitons; nonlinear optics; optical logic; quantum computing; quantum optics; semiconductor quantum dots; spectroscopy; basic unit; biexciton; biexciton lifetime; coherent nonlinear optical spectroscopy technique; coherently manipulated; exciton Rabi oscillations; exciton-exciton coherence; interacting single QD excitons; optically induced; pure dephasing; quantum information; qubit; single quantum dot exciton; single-bit rotations; two-bit quantum logic operations; two-exciton system; Excitons; Nonlinear optics; Optical logic devices; Quantum dots; Spectroscopy;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2002. QELS '02. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
1-55752-708-3
DOI :
10.1109/QELS.2002.1031154