Solid-state triggered single photon sources
| Autor: | Jean-Michel Gérard, E. Moreau, M Gallart, I. Robert, Izo Abram |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Physics
Photon Condensed matter physics Exciton Physics::Optics Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Optical microcavity Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Spontaneous parametric down-conversion law Quantum state Quantum dot laser Quantum dot Quantum efficiency Atomic physics |
| Zdroj: | Physica E: Low-dimensional Systems and Nanostructures. 16:51-58 |
| ISSN: | 1386-9477 |
| DOI: | 10.1016/s1386-9477(02)00584-2 |
| Popis: | The correlation between the photons emitted by an optically pumped single quantum dot is investigated. The correlation function on a single dot isolated in a mesa shows that only one photon is emitted at a time at the exciton frequency. Moreover, cross-correlation experiments provide evidence of the sequential de-excitation of the quantum dot, yielding a radiative cascade that produces two single photons with a definite order. These quantum states of light can be generated with a high quantum efficiency, with the use of cavity effects: surrounding the dot by a pillar microcavity not only increases significantly the single photon flux but also allows the preparation of single photon all in the same quantum state (same spatial mode and same polarization). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect