| Autor: |
Wu Y; Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom., Piper IM, Ediger M, Brereton P, Schmidgall ER, Eastham PR, Hugues M, Hopkinson M, Phillips RT |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2011 Feb 11; Vol. 106 (6), pp. 067401. Date of Electronic Publication: 2011 Feb 08. |
| DOI: |
10.1103/PhysRevLett.106.067401 |
| Abstrakt: |
Preparation of a specific quantum state is a required step for a variety of proposed quantum applications. We report an experimental demonstration of optical quantum state inversion in a single semiconductor quantum dot using adiabatic rapid passage. This method is insensitive to variation in the optical coupling in contrast with earlier work based on Rabi oscillations. We show that when the pulse power exceeds a threshold for inversion, the final state is independent of power. This provides a new tool for preparing quantum states in semiconductor dots and has a wide range of potential uses. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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