Mainz 2017 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 31: Poster: Quantum Optics and Photonics I

Q 31.52: Poster

Tuesday, March 7, 2017, 17:00–19:00, P OG1+2

Towards cavity-enhanced spectroscopy of single ions in a crystal — •Natalie Wilson, Benjamin Merkel, and Andreas Reiserer — Max Planck Institute of Quantum Optics, Garching, Germany

A future quantum network will consist of quantum nodes that are connected by optical photons, allowing users to perform tasks and interact in ways that are not possible with current technology. In this context, rare-earth-ion doped crystals have recently emerged as a promising platform. In contrast to other impurities, these ions can exhibit telecommunication-wavelength transitions between inner shells which are well-decoupled from the crystal and therefore protected from decoherence. However, because of the narrow linewidth of these transitions, spectrally resolving individual ions is challenging.

In this work, we propose a method to overcome this challenge by embedding rare-earth-ion doped crystals into optical resonators. Because of the Purcell effect, the narrow linewidths will be broadened, and photon emission will efficiently be channelled into the resonator output mode, leading to a dramatically enhanced fluorescence signal. This might enable studies of the crystalline environment of individual ions with the goal to harness them for the implementation of quantum networks and repeaters.