511 citations · 4k across the 79 of their papers we have counts for
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Unraveling nonclassicality in the optomechanical instability
Martin Koppenhöfer, Christoph Bruder, Niels Lörch
Conditional dynamics due to continuous optical measurements has successfully been applied for state reconstruction and feedback cooling in optomechanical systems. In this article,…
Quantum synchronization and entanglement generation
Alexandre Roulet, Christoph Bruder
We study synchronization in a two-node network built out of the smallest possible self-sustained oscillator: a spin 1. We first demonstrate that phase locking between the quantum o…
Optimal work extraction from quantum states by photo-assisted Cooper pair tunneling
Niels Lörch, Christoph Bruder, Nicolas Brunner +1
The theory of quantum thermodynamics predicts fundamental bounds on work extraction from quantum states. As these bounds are derived in a very general and abstract setting, it is u…
Synchronizing the Smallest Possible System
Alexandre Roulet, Christoph Bruder
We investigate the minimal Hilbert-space dimension for a system to be synchronized. We first show that qubits cannot be synchronized due to the lack of a limit cycle. Moving to lar…
Quantum effects in amplitude death of coupled anharmonic self-oscillators
Ehud Amitai, Martin Koppenhöfer, Niels Lörch +1
Coupling two or more self-oscillating systems may stabilize their zero-amplitude rest-state, therefore quenching their oscillation. This phenomenon is termed "amplitude death". Wel…