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Research topics

Our group is exploring applications of optical microcavities in the fields of solid state quantum optics, optical sensing, microscopy, spectroscopy, and optomechanics.

One of the central goals is to enhance light-matter interactions to realize efficient light-matter interfaces at the single quantum level, and to enable novel schemes for spectroscopy and sensing. We employ and further develop fiber-based Fabry-Perot microcavities, which combine microscopic mode volumes with exceptionally high quality factors, and at the same time offer open access for a variety of samples.


Spin-photon interface for single rare earth ions

We investigate cavity-enhanced optical readout of a single rare earth ion spin.

Cavity-enhanced Raman spectroscopy

We develop cavity-enhanced Raman spectroscopy for the characterization of molecular systems such as carbon nanotubes.

Scanning cavity microscopy and biosensing

We develop ultra-sensitive imaging techniques based on signal enhancement in microcavities to study absorptive and dispersive properties of nanoscale samples.

Cavity-enhanced single photon sources

We study individual color center in diamond and couple them to fiber cavities to realize improved single-photon sources.

Cavity fabrication & cavity characterization

We are continuously improving the fabrication and characterization of fiber-based Fabry-Perot microcavities.