709 citations · 1.3k across the 10 of their papers we have counts for
11 papers
Integrated-optics heralded controlled-NOT gate for polarization-encoded qubits
Jonas Zeuner, Aditya N. Sharma, Max Tillmann +5
Recent progress in integrated-optics technology has made photonics a promising platform for quantum networks and quantum computation protocols. Integrated optical circuits are char…
Tapering of fs Laser-written Waveguides
René Heilmann, Chiara Greganti, Markus Gräfe +3
The vast development of integrated quantum photonic technology enables the implementation of compact and stable interferometric networks. In particular laser-written waveguide stru…
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…
Implementation of Quantum and Classical Discrete Fractional Fourier Transforms
Steffen Weimann, Armando Perez-Leija, Maxime Lebugle +9
Fourier transforms are ubiquitous mathematical tools in basic and applied sciences. We here report classical and quantum optical realizations of the discrete fractional Fourier tra…