Title :
Heralded single photons from a single quantum dot
Author :
Becher, Christoph ; Kiraz, A. ; Michler, P. ; Schoenfeld, W.V. ; Petroff, Pierre M. ; Lidong Zhang ; Hu, E. ; Iamoglu, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
Summary form only given. A deterministic single photon source emitting triggered (heralded) photons on demand, also termed single photon turnstile device, is one of the key elements in the emerging field of quantum information science. We present a single photon source based on pulsed laser excitation of a single self-assembled InAs quantum dot (QD) embedded in a high quality (Q) factor microcavity structure. Regulation of the photon emission process of the QD exciton ground state (1X) transition is accomplished by a combination of two effects: Coulomb interactions creating an anharmonic multiexciton spectrum and a slow relaxation of highly excited QDs leading to vanishing re-excitation probability following the photon emission event at the 1X transition.
Keywords :
III-V semiconductors; excitons; indium compounds; optical pumping; optical resonators; photoluminescence; quantum cryptography; quantum optics; semiconductor quantum dots; 1X transition; Coulomb interactions; InAs; Purcell effect; coupled system; deterministic single photon source; exciton ground state transition; harmonic multiexciton spectrum; heralded single photons; high quality factor microcavity; microdisk mode; optical pumping; photon correlation; pulsed laser excitation; quantum information science; self-assembled quantum dot; single photon turnstile device; single quantum dot; slow relaxation; spatially resolved photoluminescence; temperature tuning; triggered photons on demand; vanishing re-excitation probability; Excitons; Information science; Laser excitation; Laser theory; Laser transitions; Microcavities; Optical pulses; Photonics; Quantum dot lasers; Quantum dots;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2001. QELS '01. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-663-X
DOI :
10.1109/QELS.2001.962044
