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Femtosecond coherence and quantum control of single molecules at room temperature

Titelangaben

Hildner, Richard ; Brinks, Daan ; van Hulst, Niek F.:
Femtosecond coherence and quantum control of single molecules at room temperature.
In: Nature Physics. Bd. 7 (2011) Heft 2 . - 172 - 177.
ISSN 1745-2473
DOI: https://doi.org/10.1038/nphys1858

Volltext

Link zum Volltext (externe URL): Volltext

Abstract

Quantum-mechanical phenomena, such as electronic coherence and entanglement, play a key role in several remarkably efficient natural processes including ultrafast electronic energy transfer and charge separation in photosynthetic light- harvesting. To gain insight into such dynamic processes of biomolecules it is vital to reveal relations between structural and quantum-mechanical properties. However, ensemble experiments targeting ultrafast coherences are hampered by the large intrinsic heterogeneity in these systems at physiological conditions, and single-molecule techniques have not been available until now. Here we show, by employing femtosecond pulse-shaping techniques, that quantum coherences in single organic molecules can be created, probed and manipulated at ambient conditions even in highly disordered solid environments.We find broadly distributed coherence decay times for different individual molecules giving direct insight into the structural heterogeneity of the local surroundings. Most importantly, we induce Rabi oscillations and control the coherent superposition state in a single molecule, thus carrying out a basic femtosecond single-qubit operation at room temperature.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Institutionen der Universität: Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut > Lehrstuhl Experimentalphysik IX - Spektroskopie weicher Materie
Profilfelder > Advanced Fields > Polymer- und Kolloidforschung
Fakultäten
Fakultäten > Fakultät für Mathematik, Physik und Informatik
Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut
Profilfelder
Profilfelder > Advanced Fields
Titel an der UBT entstanden: Nein
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
Eingestellt am: 20 Apr 2015 06:45
Letzte Änderung: 20 Apr 2015 06:45
URI: https://eref.uni-bayreuth.de/id/eprint/10530