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QUICK -- Design of a satellite-based quantum light source for quantum communication and extended physical theory tests in space
Najme Ahmadi, Sven Schwertfeger, Philipp Werner +19
Modern quantum technologies have matured such that they can now be used in space applications, e.g., long-distance quantum communication. Here, we present the design of a compact t…
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…
Demonstration of local teleportation using classical entanglement
Diego Guzman-Silva, Robert Brüning, Felix Zimmermann +8
Teleportation is the most widely discussed application of the basic principles of quantum mechanics. Fundamentally, this process describes the transmission of information, which in…
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…
Enhancing quantum transport in a photonic network using controllable decoherence
Devon N. Biggerstaff, René Heilmann, Aidan A. Zecevik +7
Transport phenomena on a quantum scale appear in a variety of systems, ranging from photosynthetic complexes to engineered quantum devices. It has been predicted that the efficienc…
Divide-and-Conquer: An integrated photon-counting scheme
Rene Heilmann, Jan Sperling, Armando Perez-Leija +5
The key requirement for harnessing the quantum properties of light is the capability to detect and count individual photons. Of particular interest are photon-number-resolving dete…
Bloch Oscillations of Einstein-Podolsky-Rosen States
Maxime Lebugle, Markus Gräfe, René Heilmann +3
Bloch Oscillations (BOs) of quantum particles manifest themselves as periodic spreading and re-localization of the associated wave functions when traversing lattice potentials subj…
Experimental simulation of charge conservation violation and Majorana dynamics
R. Keil, C. Noh, A. Rai +4
Unphysical particles are commonly ruled out from the solution of physical equations, as they fundamentally cannot exist in any real system and, hence, cannot be examined experiment…
Generalized multi-photon quantum interference
Max Tillmann, Si-Hui Tan, Sarah E. Stoeckl +6
Non-classical interference of photons lies at the heart of optical quantum information processing. This effect is exploited in universal quantum gates as well as in purpose-built q…
Quantum walks of correlated photon pairs in two-dimensional waveguide arrays
Konstantinos Poulios, Robert Keil, Daniel Fry +9
We demonstrate quantum walks of correlated photons in a 2D network of directly laser written waveguides coupled in a 'swiss cross' arrangement. The correlated detection events show…
Experimental Boson Sampling
Max Tillmann, Borivoje Dakić, René Heilmann +3
Universal quantum computers promise a dramatic speed-up over classical computers but a full-size realization remains challenging. However, intermediate quantum computational models…
Coherent Quantum Transport in Photonic Lattices
Armando Perez-Leija, Robert Keil, Alastair Kay +6
Transferring quantum states efficiently between distant nodes of an information processing circuit is of paramount importance for scalable quantum computing. We report on the first…
Classical analogue of displaced Fock states and quantum correlations in Glauber-Fock photonic lattices
Robert Keil, Armando Perez-Leija, Felix Dreisow +5
Coherent states and their generalisations, displaced Fock states, are of fundamental importance to quantum optics. Here we present a direct observation of a classical analogue for…