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Femtosecond coherence and quantum control of single molecules at room temperature

Title data

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

Official URL: Volltext

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik IX - Spektroskopie weicher Materie
Profile Fields > Advanced Fields > Polymer and Colloid Science
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Profile Fields
Profile Fields > Advanced Fields
Result of work at the UBT: No
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 20 Apr 2015 06:45
Last Modified: 20 Apr 2015 06:45
URI: https://eref.uni-bayreuth.de/id/eprint/10530