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APS » Journals » Phys. Rev. B » Volume 80 » Issue 12
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Phys. Rev. B 80, 121309(R) (2009) [4 pages]

Coherent optical control of the wave function of zero-dimensional exciton polaritons

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R. Cerna1,*, D. Sarchi2,†, T. K. Paraïso1, G. Nardin1, Y. Léger1, M. Richard1,‡, B. Pietka1, O. El Daif1,§, F. Morier-Genoud1, V. Savona2, M. T. Portella-Oberli1, and B. Deveaud-Plédran1
1Institut de Photonique et d’Électronique Quantiques, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
2Institute of Theoretical Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland

Received 30 June 2009; published 28 September 2009

Control of the wave function of confined microcavity polaritons is demonstrated experimentally and theoretically by means of tailored resonant optical excitation. Three dimensional confinement is achieved by etching mesas on top of the microcavity spacer layer. Resonant excitation with a continuous-wave laser locks the phase of the discrete polariton states to the phase of the laser. By tuning the energy and momentum of the laser, we achieve precise control of the momentum pattern of the polariton wave function. This is an efficient and direct way for quantum control of electronic excitations in a solid.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.80.121309
DOI:
10.1103/PhysRevB.80.121309
PACS:
71.36.+c, 71.35.−y, 78.55.Cr

*roland.cerna@epfl.ch

†Present address: CNR-INFM BEC Center and Dipartimento di Fisica, Universit di Trento, via Sommarive 14, I-38050 Povo, Trento, Italy.

‡Present address: Institut Néel-CNRS, 25 Avenue des Martyrs, BP 166, 38042 Grenoble Cedex 9, France.

§Present address: Institut des Nanotechnologies de Lyon (INL), UMR CNRS 5270, Ecole Centrale de Lyon, 36 Avenue Guy de Collongue, 69134 Ecully Cedex, France.

 
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