Felix von Oppen

Active Quantum Matter from Monitored Pure-State Dynamics

Anonymous, Felix von Oppen, Reinhold Egger

Quantum many-body systems coupled to out-of-equilibrium reservoirs can behave as active matter and exhibit signs of flocking. However, the resulting steady states are highly mixed and carry only weak quantum signatures. We show that signatures of active matter also arise in ensembles …

us, de (code pays fourni par la source)

How quantum is quantum geometry?

Ady Stern, Felix von Oppen

The quantum geometric tensor - the Berry curvature together with the quantum metric - now underlies a long list of observables, from the anomalous Hall effect to the superfluid weight of a flat band. We ask which of these observables actually require …

Tunneling signatures of interband coherence in dilute exciton condensates

Anonymous, Felix von Oppen

We theoretically investigate signatures of exciton condensation and the underlying interband coherence in scanning tunneling microscopy. We consider both monolayer and bilayer condensates in the regime of a dilute condensate of tightly bound excitons. For monolayer condensates, interband coherence is directly encoded …

de, fi (code pays fourni par la source)

Robustness of Real-Space Topology in Moiré Systems

Anonymous, Kang Yang, Felix von Oppen, Christophe Mora

The appearance of fractional Chern insulators in moiré systems can be rationalized by the presence of a fictitious magnetic field associated with the spatial texture of layer-resolved electronic wave functions. Here, we present a systematic study of real-space topology and the associated …

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Active quantum matter from monitored pure-state dynamics

Felix von Oppen, Reinhold Egger, Jacob F. Steiner

This contains the code and data used to generate Fig. 2 in https://arxiv.org/abs/2603.12629.

de (code pays fourni par la source)

Active quantum matter from monitored pure-state dynamics

Felix von Oppen, Reinhold Egger, Jacob F. Steiner

This contains the code and data used to generate Fig. 2 in https://arxiv.org/abs/2603.12629.

de (code pays fourni par la source)

Superextensive charging speeds in a correlated quantum charger

Harald Schmid, Felix von Oppen, Gil Refael, Yang Peng

We define a quantum charger as an interacting quantum system that transfers energy between two drives. The key figure of merit characterizing a charger is its charging power. Remarkably, the presence of long-range interactions within the charger can induce a collective steady-state …

de, us (code pays fourni par la source)

Dynamical self-dual criticality in Fibonacci-monitored quantum Ising chains

Finn Eckstein, Harald Schmid, Quinten Preiß, Simon Trebst et autres

For the quantum phase transition in the transverse-field Ising chain, Kramers-Wannier duality not only protects its critical properties but also pinpoints the location of the phase transition. Its role in out-of-equilibrium, monitored dynamics, however, remains largely unexplored beyond time-periodic Floquet protocols where …

Lifetime and spectral function of topological heavy fermions

Nemin Wei, Felix von Oppen, Leonid I. Glazman

Twisted bilayer graphene provides a paradigmatic platform for exploring the interplay between electronic topology and strong correlations. Within the topological heavy fermion model [Song and Bernevig, Phys. Rev. Lett. 129, 047601 (2022)], topology and electron interactions are brought together by including a …

Tunneling signatures of interband coherence in dilute exciton condensates

Kryštof Kolář, Felix von Oppen

We theoretically investigate signatures of exciton condensation and the underlying interband coherence in scanning tunneling microscopy. We consider both monolayer and bilayer condensates in the regime of a dilute condensate of tightly bound excitons. For monolayer condensates, interband coherence is directly encoded …

Tunneling signatures of interband coherence in dilute exciton condensates

Kryštof Kolář, Felix von Oppen

We theoretically investigate signatures of exciton condensation and the underlying interband coherence in scanning tunneling microscopy. We consider both monolayer and bilayer condensates in the regime of a dilute condensate of tightly bound excitons. For monolayer condensates, interband coherence is directly encoded …

de, fi (code pays fourni par la source)

Superextensive charging speeds in a correlated quantum charger

Harald Schmid, Felix von Oppen, Gil Refael, Yang Peng

We define a quantum charger as an interacting quantum system that transfers energy between two drives. The key figure of merit characterizing a charger is its charging power. Remarkably, the presence of long-range interactions within the charger can induce a collective steady-state …