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Q: Fachverband Quantenoptik und Photonik

Q 66: Quantum Effects (Entanglement and Decoherence)

Q 66.8: Vortrag

Freitag, 9. März 2018, 12:15–12:30, K 1.013

Exploring Fano interferometers towards entanglement detection — •Jörg Evers and Fabian Lauble — Max-Planck-Institut für Kernphysik, Heidelberg

Interferometry is an indispensable tool across all the natural sciences. Recently, we have proposed and implemented a new type of interferometer based on phase-sensitive Fano resonances. These Fano resonances appear if photons have two indistinguishable pathways from source to detector: either via a spectrally broad continuum channel, or via a spectrally narrow resonant bound state scattering channel. We have shown that these two channels can form interferometer arms [1], and experimentally demonstrated two different implementations of Fano interferometers in x-ray quantum optics [1,2]. Here, we review these Fano interferometers, and discuss their capabilities in particular related to the detection of single-photon mode entanglement [3]. 0.1cm [1] K. P. Heeg et al., Interferometric phase detection at x-ray energies via Fano resonance control, Phys. Rev. Lett. 114, 207401 (2015). 0.1cm [2] K. P. Heeg et al., Spectral narrowing of x-ray pulses for precision spectroscopy with nuclear resonances, Science 357, 375 (2017). 0.1cm [3] F. Lauble and J. Evers, in preparation.

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