A Quantum Dot Single-Photon Turnstile Device

Quantum communication relies on the availability of light pulses with strong quantum correlations among photons. An example of such an optical source is a single-photon pulse with a vanishing probability for detecting two or more photons. Using pulsed laser excitation of a single quantum dot, a sing...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Science (American Association for the Advancement of Science) 2000-12, Vol.290 (5500), p.2282-2285
Hauptverfasser:	Michler, P., Kiraz, A., Becher, C., Schoenfeld, W. V., Petroff, P. M., Zhang, Lidong, Hu, E., Imamoğlu, A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Atoms Atoms & subatomic particles Communication Communications Correlations Cryptography Electrical engineering Electronics Exact sciences and technology Ground state Lasers Light Molecules Optoelectronic devices Photons Pumps Quantum dots Quantum Mechanics Quantum theory Repetition River water Safety and security measures Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Quantum communication relies on the availability of light pulses with strong quantum correlations among photons. An example of such an optical source is a single-photon pulse with a vanishing probability for detecting two or more photons. Using pulsed laser excitation of a single quantum dot, a single-photon turnstile device that generates a train of single-photon pulses was demonstrated. For a spectrally isolated quantum dot, nearly 100% of the excitation pulses lead to emission of a single photon, yielding an ideal single-photon source.
ISSN:	0036-8075 1095-9203
DOI:	10.1126/science.290.5500.2282