Quantum simulation

From single-particle to many-body chaos in Yukawa-SYK

The holographic principle establishes a deep connection between a bulk gravity theory and a strongly-coupled boundary field theory, with far-reaching implications such as the saturation of bounds on quantum chaos, maximal information scrambling, and …

Towards 2+1D quantum electrodynamics on a cold-atom quantum simulator

Cold atoms have become a powerful platform for quantum-simulating lattice gauge theories in higher spatial dimensions. However, such realizations have been restricted to the lowest possible truncations of the gauge field, which limit the connections …

Quantum simulation of holographic quantum matter – from quantum chaos to ultracold atoms in a cavity

Holographic field theories represent a phase of matter that is dual to bulk gravity and that provides paradigms for non-Fermi-liquid behavior and for extreme quantum chaos, making it relevant for communities from quantum gravity, quantum information, …

When the center matters: color screening and gluelumps in dihedral lattice gauge theories

Confinement is one of the hallmarks of quantum chromodynamics (QCD). Yet, its first-principle characterization, even in simpler models, remains elusive. Through a combination of group-theoretical arguments and numerical analysis, we show that the …

Quantum Resources in Non-Abelian Lattice Gauge Theories: Nonstabilizerness, Multipartite Entanglement, and Fermionic Non-Gaussianity

Lattice gauge theories (LGTs) represent one of the most ambitious goals of quantum simulation. From a practical implementation perspective, non-Abelian theories present significantly tougher challenges than Abelian LGTs. However, it is unknown …

Quantum simulation of holographic quantum matter

Holographic quantum matter (i.e., field theories that are dual to bulk gravity) represent paradigms for non-Fermi-liquid behavior and for extreme quantum chaos, cementing a deep interest throughout communities ranging from quantum gravity, over …

Quantum simulation of holographic quantum matter

Complexity transitions in chaotic quantum systems

Complexity transitions in chaotic quantum systems

Complex quantum systems -- composed of many, interacting particles -- are intrinsically difficult to model. When a quantum many-body system is subject to disorder, it can undergo transitions to regimes with varying non-ergodic and localized behavior, …

Quantum simulation of non-Abelian lattice gauge theories: A variational approach to 𝔻8 with dynamical matter

Quantum simulation of lattice gauge theories (LGTs) provides a powerful framework for understanding nonperturbative phenomena. However, to realize the hope of answering challenging physics questions on near-term devices it is crucial to develop …