9 papers
Quantum limit cycles and synchronization from a measurement perspective
Tobias Nadolny, Christoph Bruder
Limit-cycle oscillators are the basic building blocks for synchronization; yet, the notion of a quantum limit cycle has remained unclear. Here, we study quantum limit cycles and sy…
Crystal formation in systems of pseudo-forced swarmalators
Brennan J. H. Hughes, Christoph Bruder, Tobias Kehrer
Swarmalators are active agents that move in position space and exhibit internal degrees of freedom. Due to interactions of their positions and phases of oscillation, they show on t…
Quantum Synchronization of Twin Limit-Cycle Oscillators
Tobias Kehrer, Christoph Bruder, Parvinder Solanki
Quantum synchronization has been a subject of intensive research in the last decade. In this work, we propose a quantum Liénard system whose classical equivalent features two limi…
Quantum synchronization blockade induced by nonreciprocal coupling
Tobias Kehrer, Christoph Bruder
Recently, the synchronization of coupled quantum oscillators has attracted a great deal of interest. Synchronization requires driven constituents, and in such systems, the coupling…
Nonreciprocal interactions induce frequency shifts in superradiant lasers
Tobias Nadolny, Matteo Brunelli, Christoph Bruder
Superradiant lasers, which consist of incoherently driven atoms coupled to a lossy cavity, are a promising source of coherent light due to their stable frequency and superior narro…
Generation of entanglement and non-stationary states via competing coherent and incoherent bosonic hopping
Parvinder Solanki, Albert Cabot, Matteo Brunelli +3
Incoherent stochastic processes added to unitary dynamics are typically deemed detrimental since they are expected to diminish quantum features such as superposition and entangleme…