Research Group Hunger
Our group is exploring applications of optical microcavities in the fields of solid state quantum optics, optical sensing, microscopy, spectroscopy, and optomechanics.
Enhanced light-matter interactions allow one to realize efficient optical interfaces at the single quantum level, and 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. We use this highly flexible platform e.g. to realize a coherent spin-photon interface for NV centers in diamond, to read out and control individual rare earth ions as qubits, and to perform cavity-enhanced sensing and spectroscopy of nanosystems also in liquid environments.
- 08/20: We have developed a novel scheme for 3D tracking of Brownian motion and cavity-enhanced sensing of nanoparticles in liquids: https://arxiv.org/abs/2008.12173
- 02/20: new publication in collaboration with Ferdinand Schmidt-Kaler: Cryogenic platform for coupling color centers in diamond membranes to a fiberbased microcavity, arXiv:2002.08304
- 01/20: new publication in collaboration with Hugues de Riedmatten: Dynamic control of Purcell enhanced emission of erbium ions in nanoparticles, arXiv:2001.08532
- 10/19: From our group emerges the spin-off Qlibri, developing stable optical fiber micro cavities for quantum optics and cavity enhanced absorption microscopes.
- 10/19: We could explain artefacts in scanning cavity microscopy, see the new paper.
- 09/19: Our paper on Polariton hyperspectral imaging in WS2 is (finally!) published
- 8/19: We have hosted the Quantum Futur Academy with more than 30 participants.
- 7/19: We have hosted the SQUARE summer school with 60 participants.
- 11/18: The Max Planck School of Photonics has launched, with a first call for students opened until 15.12.2018. We are participating and offer a PhD project within the school!
- 10/18: The Quantum Flagship is now officially announced, and with it the project SQUARE where we are part of. Have a look at the press release and webpage SQUARE.
- 10/18: Press release for the quantum repeater project q.link.x online: link
- 10/18: Quantum Flagship Kickoff announced (link): We will be part of it! Press release to come soon
- 08/18: BMBF-founded project "Quantum Link Extended" (q.link.x) has started. We will contribute to realize a quantum repeater link based on color centers in diamond within Germany.