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Ion trap assembly including in-vacuum observation lenses. Click to magnify.
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Activities:
The absorption and emission of single photons by single atoms is the fundamental physical process in which the quantum nature of light-matter interaction becomes manifest. We study experimentally the quantum interaction between single atomic particles and single photons using trapped, laser-cooled ions and atoms, and single-photon sources and detectors. With equal emphasis, we aim at characterizing the fundamental quantum processes while pursuing their development into tools for processing and transmitting quantum information.
Projects:
Quantum interaction between distant trapped ions
Laser-cooled atoms for quantum memories
Photon-atom entanglement transfer
Single-atom - single-photon interfaces
Quantum optical tools
Cavity QED atom-photon interfaces
Available Resources:
(some examples)
- a wavemeter with 60 MHz resolution
- narrowband cw lasers at 397 nm, 730 nm, 850 nm, 854 nm, and 866 nm
- a reference laser at 852 nm stabilized to an atomic resonance in Cs
- Hamamatsu PMTs, Perkin-Elmer APDs, and "PicoHarp" single photon counting electronics
- a Leybold UHV turbo pump system
- a home-built multi-channel rf pulse sequencer
Collaborations:
Prof. Rainer Blatt, University of Innsbruck, Austria
Dr. Giovanna Morigi, Universitat Autònoma de Barcelona
"SCALA" Integrated Project
"EMALI" Marie-Curie Training Project
Together with Morgan Mitchell's and Juan Perez' groups we form a "Grup Emergent" funded by the Generalitat de Catalunya.
With various groups in Barcelona, Valencia, and Madrid we form the "QOIT - Quantum Optical Information Technology" research consortium funded by the MEC within the Consolider-Ingenio 2010 program. (more...)
Contact:
 juergen.eschner@icfo.es
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