Certifying the topology of quantum networks: theory and experiment

LT Weinbrenner, N Prasannan, K Hansenne… - Physical Review Letters, 2024 - APS
Distributed quantum information in networks is paramount for global secure quantum
communication. Moreover, it finds applications as a resource for relevant tasks, such as …

Single-photon hologram of a zero-area pulse

M Lipka, M Parniak - Physical Review Letters, 2021 - APS
Single photons exhibit inherently quantum and unintuitive properties such as the Hong-Ou-
Mandel effect, demonstrating their bosonic and quantized nature, yet at the same time may …

Realization of high-fidelity unitary operations on up to 64 frequency bins

S De, V Ansari, J Sperling, S Barkhofen, B Brecht… - Physical Review …, 2024 - APS
The ability to apply user-chosen large-scale unitary operations with high fidelity to a
quantum state is key to realizing future photonic quantum technologies. Here, we realize the …

Dynamic conditioning of two particle discrete-time quantum walks

F Pegoraro, P Held, S Barkhofen, B Brecht… - Physica …, 2023 - iopscience.iop.org
In real photonic quantum systems losses are an unavoidable factor limiting the scalability to
many modes and particles, restraining their application in fields as quantum information and …

Transient subdiffusion via disordered quantum walks

A Geraldi, S De, A Laneve, S Barkhofen, J Sperling… - Physical Review …, 2021 - APS
Transport phenomena play a crucial role in modern physics and applied sciences.
Examples include the dissipation of energy across a large system, the distribution of …

Engineering quantum states from a spatially structured quantum eraser

C Schiano, B Sephton, R Aiello, F Graffitti, N Lal… - Science …, 2024 - science.org
Quantum interference is a central resource in many quantum-enhanced tasks, from
computation to communication. While usually occurring between identical photons, it can …

Driven Gaussian quantum walks

P Held, M Engelkemeier, S De, S Barkhofen, J Sperling… - Physical Review A, 2022 - APS
Quantum walks function as essential means to implement quantum simulators, allowing one
to study complex and often directly inaccessible quantum processes in controllable systems …

Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler

S Babel, L Bollmers, M Massaro, K Hong Luo… - Optics …, 2023 - opg.optica.org
Interference between single photons is key for many quantum optics experiments and
applications in quantum technologies, such as quantum communication or computation. It is …

Statistical benchmarking of scalable photonic quantum systems

J Tiedau, M Engelkemeier, B Brecht, J Sperling… - Physical Review Letters, 2021 - APS
Targeting at the realization of scalable photonic quantum technologies, the generation of
many photons, their propagation in large optical networks, and a subsequent detection and …

Two-particle Hadamard walk on dynamically percolated line and circle

M Parýzková, M Štefaňák, J Novotný, B Kollár… - Physica …, 2024 - iopscience.iop.org
Asymptotic dynamics of a Hadamard walk of two non-interacting quantum particles on a
dynamically percolated finite line or a circle is investigated. We construct a basis of the …