709 citations · 1.3k across the 10 of their papers we have counts for
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Scalable on-chip quantum state tomography
James Titchener, Markus Gräfe, René Heilmann +3
Quantum information systems are on a path to vastly exceed the complexity of any classical device. The number of entangled qubits in quantum devices is rapidly increasing and the i…
Hybrid waveguide-bulk multi-path interferometer with switchable amplitude and phase
Robert Keil, Thomas Kaufmann, Thomas Kauten +5
We design and realise a hybrid interferometer consisting of three paths based on integrated as well as on bulk optical components. This hybrid construction offers a good compromise…
Direct measurement of second-order coupling in a waveguide lattice
Robert Keil, Benedikt Pressl, René Heilmann +3
We measure the next-nearest-neighbour coupling in an array of coupled optical waveguides directly via an integrated eigenmode interferometer. In contrast to light propagation exper…