79 citations · 348 across the 11 of their papers we have counts for
5 papers · 1 filter
Eigenvalue Measurement of Topologically Protected Edge states in Split-Step Quantum Walks
Thomas Nitsche, Tobias Geib, Christoph Stahl +5
We study topological phenomena of quantum walks by implementing a novel protocol that extends the range of accessible properties to the eigenvalues of the walk operator. To this en…
Photonic quantum walks with four-dimensional coins
Lennart Lorz, Evan Meyer-Scott, Thomas Nitsche +5
The dimensionality of the internal coin space of discrete-time quantum walks has a strong impact on the complexity and richness of the dynamics of quantum walkers. While two-dimens…
A high dynamic range optical detector for measuring single photons and bright light
Johannes Tiedau, Evan Meyer-Scott, Thomas Nitsche +3
Detecting light is fundamental to all optical experiments and applications. At the single photon level, the quantised nature of light requires specialised detectors, which typicall…
Supersymmetric polarization anomaly in photonic discrete-time quantum walks
Sonja Barkhofen, Lennart Lorz, Thomas Nitsche +2
Quantum anomalies lead to finite expectation values that defy the apparent symmetries of a system. These anomalies are at the heart of topological effects in fundamental, electroni…
Probing Measurement Induced Effects in Quantum Walks via Recurrence
Thomas Nitsche, Sonja Barkhofen, Regina Kruse +7
Measurements on a quantum particle unavoidably affect its state, since the otherwise unitary evolution of the system is interrupted by a non-unitary projection operation. In order…