77 citations · 160 across the 22 of their papers we have counts for
18 papers · 1 filter
Loss-aware pulse sequence optimization for generating photonic Fock states
Benjamin Stodd, Priyanshu Tiwari, René Sondenheimer +2
We investigate the preparation of frequency-tunable photonic Fock states in a hybrid cavity system consisting of a nonlinear medium and a two-level system. Employing a gradient-bas…
Entanglement and photoelectron holography in dissociative photoionization: molecular quantum eraser
Sebastian Hell, Paul Winter, Martin Gärttner +6
In a double-slit experiment with a bipartite system, the visibility of interference fringes depends on the availability of which-way information. Here, we report a Bell-like state…
Learning to detect optical nonclassicality
Martina Jung, Suchitra Krishnaswamy, Timon Schapeler +4
Nonclassicality, defined in the quantum optical sense, serves as a resource for photon-based quantum technologies. Therefore, certifying the nonclassicality of a quantum state is c…
Observable nonclassicality witnesses for multiplexed detection systems
Suchitra Krishnaswamy, Martina Jung, Laura Ares +2
We address the problem of constructing witnesses for nonclassical light that are applicable in state-of-the-art photon-counting devices. The key ingredient for the criteria we deri…
Revealing entanglement through local features of phase-space distributions
Elena Callus, Martin Gärttner, Tobias Haas
We formulate an infinite hierarchy of continuous-variable separability criteria in terms of quasiprobability distributions and their derivatives evaluated at individual points in p…
Limitations for adaptive quantum state tomography in the presence of detector noise
Adrian Skasberg Aasen, Martin Gärttner
Assumption-free reconstruction of quantum states from measurements is essential for benchmarking and certifying quantum devices, but it remains difficult due to the extensive measu…
Exploiting emergent symmetries in disorder-averaged quantum dynamics
Mirco Erpelding, Adrian Braemer, Martin Gärttner
Symmetries are a key tool in understanding quantum systems, and, among many other things, can be exploited to increase the efficiency of numerical simulations of quantum dynamics.…
Quantum computing and artificial intelligence: status and perspectives
Giovanni Acampora, Andris Ambainis, Natalia Ares +36
This white paper discusses and explores the various points of intersection between quantum computing and artificial intelligence (AI). It describes how quantum computing could supp…
Configurable photonic simulator for quantum field dynamics
Mauro D'Achille, Martin Gärttner, Tobias Haas
Quantum field simulators provide unique opportunities for investigating the dynamics of quantum fields through tabletop experiments. A primary drawback of standard encoding schemes…
Mitigation of correlated readout errors without randomized measurements
Adrian Skasberg Aasen, Andras Di Giovanni, Hannes Rotzinger +2
Quantum simulation, the study of strongly correlated quantum matter using synthetic quantum systems, has been the most successful application of quantum computers to date. It often…
Detecting high-dimensional time-bin entanglement in fiber-loop systems
Niklas Euler, Monika Monika, Ulf Peschel +1
Many quantum communication protocols rely on the distribution of entanglement between the different participating parties. One example is quantum key distribution (QKD), an applica…
Interferometric detection of continuous-variable entanglement using two states
Elena Callus, Martin Gärttner, Tobias Haas
The efficient witnessing and certification of entanglement is necessitated by its ubiquitous use in various aspects of quantum technologies. In the case of continuous-variable bipa…
Quantum simulation of wave optics in weakly inhomogeneous media using block-encoding
Siavash Davani, Martin Gärttner, Falk Eilenberger
We propose a quantum algorithm that simulates the propagation of a light field through a weakly inhomogeneous medium. In the paraxial approximation, the wave equation in an inhomog…
Optimizing detection of continuous variable entanglement for limited data
Martin Gärttner, Tobias Haas, Johannes Noll
We explore the advantages of a class of entanglement criteria for continuous variable systems based on the Husimi -distribution in scenarios with sparse experimental data. The g…
Observation of anisotropy-independent magnetization dynamics in spatially disordered Heisenberg spin systems
Titus Franz, Sebastian Geier, Clément Hainaut +7
An important step towards a comprehensive understanding of far-from-equilibrium dynamics of quantum many-body systems is the identification of unifying features that are independen…
Emergent pair localization in a many-body quantum spin system
Titus Franz, Sebastian Geier, Adrian Braemer +8
Understanding how closed quantum systems dynamically approach thermal equilibrium presents a major unresolved problem in statistical physics. Generically, non-integrable quantum sy…
Glassy quantum dynamics of disordered Ising spins
Philipp Schultzen, Titus Franz, Sebastian Geier +6
We study the out-of-equilibrium dynamics in the quantum Ising model with power-law interactions and positional disorder. For arbitrary dimension and interaction range …
Glassy dynamics in a disordered Heisenberg quantum spin system
A. Signoles, T. Franz, R. Ferracini Alves +4
Understanding the dynamics of strongly interacting disordered quantum systems is one of the most challenging problems in modern science, due to features such as the breakdown of th…