Signatures of Quantum Coherences in Rydberg Excitons

P. Grünwald, M. Aßmann, J. Heckötter, D. Fröhlich, M. Bayer, H. Stolz, and S. Scheel
Phys. Rev. Lett. 117, 133003 – Published 22 September 2016
PDFHTMLExport Citation

Abstract

Coherent optical control of individual particles has been demonstrated both for atoms and semiconductor quantum dots. Here we demonstrate the emergence of quantum coherent effects in semiconductor Rydberg excitons in bulk Cu2O. Because of the spectral proximity between two adjacent Rydberg exciton states, a single-frequency laser may pump both resonances with little dissipation from the detuning. As a consequence, additional resonances appear in the absorption spectrum that correspond to dressed states consisting of two Rydberg exciton levels coupled to the excitonic vacuum, forming a V-type three-level system, but driven only by one laser light source. We show that the level of pure dephasing in this system is extremely low. These observations are a crucial step towards coherently controlled quantum technologies in a bulk semiconductor.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 1 March 2016

DOI:https://doi.org/10.1103/PhysRevLett.117.133003

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

P. Grünwald1,*, M. Aßmann2, J. Heckötter2, D. Fröhlich2, M. Bayer2, H. Stolz1, and S. Scheel1

  • 1Institut für Physik, Universität Rostock, Albert-Einstein-Strasse 23, D-18059 Rostock, Germany
  • 2Experimentelle Physik 2, Technische Universität Dortmund, D-44221 Dortmund, Germany

  • *peter.gruenwald@uni-rostock.de

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 117, Iss. 13 — 23 September 2016

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×