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  Coherent superposition of photon- and phonon-assisted tunneling in coupled quantum dots

Qin, H., Holleitner, A. W., Eberl, K., & Blick, R. H. (2001). Coherent superposition of photon- and phonon-assisted tunneling in coupled quantum dots. Physical Review B, 64(24): 241302.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000E-E587-7 Version Permalink: https://hdl.handle.net/21.11116/0000-000E-E588-6
Genre: Journal Article

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 Creators:
Qin, H., Author
Holleitner, A. W., Author
Eberl, K.1, Author           
Blick, R. H.2, Author           
Affiliations:
1Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society, ou_3370501              
2Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society, ou_3370504              

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 Abstract: We report on electron transport through an artificial molecule
formed by two tunnel coupled quantum dots, which are laterally
confined in a two-dimensional electron system of an AlxGa1-
xAs/GaAs heterostructure. Coherent molecular states in the
coupled dots are probed by photon-assisted tunneling (PAT).
Above 10 GHz, we observe clear PAT as a result of the resonance
between the microwave photons and the molecular states. Below 8
GHz, a pronounced superposition of phonon- and photon-assisted
tunneling is observed. Coherent superposition of molecular
states persists under excitation of acoustic phonons.

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Language(s): eng - English
 Dates: 2001
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 7439
ISI: 000173082500007
 Degree: -

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Title: Physical Review B
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 64 (24) Sequence Number: 241302 Start / End Page: - Identifier: ISSN: 0163-1829