517 citations · 1.7k across the 29 of their papers we have counts for
29 papers
Witnesses of Genuine Multipartite Entanglement and Nonlocal Measurement Back-action for Raman-scattering Quantum Systems
Kai Ryen Bush, Kjetil Børkje
Entanglement between remote quantum mechanical systems enables a range of quantum information tasks in communication, computation and distributed sensing. Large numbers of entangle…
Optomechanics driven by noisy and narrowband fields
Louise Banniard, Cheng Wang, Davide Stirpe +4
We report a study of a cavity optomechanical system driven by narrow-band electromagnetic fields, which are applied either in the form of uncorrelated noise, or as a more structure…
Proposal for Observing Nonclassicality in Highly Excited Mechanical Oscillators by Single Photon Detection
Kai Ryen Bush, Kjetil Børkje
The preparation of pure quantum states with high degrees of macroscopicity is a central goal of ongoing experimental efforts to control quantum systems. We present a state preparat…
Ground-state cooling of a mechanical oscillator by heating
Cheng Wang, Louise Banniard, Kjetil Børkje +3
Dissipation and the accompanying fluctuations are often seen as detrimental for quantum systems, since they are associated with fast relaxation and loss of phase coherence. However…
Quantum state purity versus average phonon number for characterization of mechanical oscillators in cavity optomechanics
K. Børkje, F. Marin
Quantum oscillators in Gaussian states are often characterized by average occupation numbers that refer to a basis of eigenstates of the non-interacting oscillator Hamiltonian. We…
Two-dimensional quantum motion of a levitated nanosphere
A. Ranfagni, K. Børkje, F. Marino +1
We report on the two-dimensional (2D) dynamics of a levitated nanoparticle in an optical cavity. The motion of the nanosphere is strongly coupled to the cavity field by coherent sc…