PT  - JOURNAL ARTICLE
AU  - High, Alex A.
AU  - Novitskaya, Ekaterina E.
AU  - Butov, Leonid V.
AU  - Hanson, Micah
AU  - Gossard, Arthur C.
TI  - Control of Exciton Fluxes in an Excitonic Integrated Circuit
AID  - 10.1126/science.1157845
DP  - 2008 Jul 11
TA  - Science
PG  - 229--231
VI  - 321
IP  - 5886
4099  - http://science.sciencemag.org/content/321/5886/229.short
4100  - http://science.sciencemag.org/content/321/5886/229.full
SO  - Science2008 Jul 11; 321
AB  - Efficient signal communication uses photons. Signal processing, however, uses an optically inactive medium, electrons. Therefore, an interconnection between electronic signal processing and optical communication is required at the integrated circuit level. We demonstrated control of exciton fluxes in an excitonic integrated circuit. The circuit consists of three exciton optoelectronic transistors and performs operations with exciton fluxes, such as directional switching and merging. Photons transform into excitons at the circuit input, and the excitons transform into photons at the circuit output. The exciton flux from the input to the output is controlled by a pattern of the electrode voltages. The direct coupling of photons, used in communication, to excitons, used as the device-operation medium, may lead to the development of efficient exciton-based optoelectronic devices.