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10 papers · 2 filters
Efficient measurement-based quantum computing with continuous-variable systems
Matthias Ohliger, Jens Eisert
We present strictly efficient schemes for scalable measurement-based quantum computing using continuous-variable systems: These schemes are based on suitable non-Gaussian resource…
Feynman Diagrams for Dispersion Interactions Out of Equilibrium -- Two-Body Potentials for Atoms with Initial Excitation
Harald R. Haakh, Jürgen Schiefele, Carsten Henkel
Diagrammatic techniques are well-known in the calculation of dispersion interactions between atoms or molecules. The multipolar coupling scheme combined with Feynman ordered diagra…
Opto- and electro-mechanical entanglement improved by modulation
A. Mari, J. Eisert
One of the main milestones in the study of opto- and electro-mechanical systems is to certify entanglement between a mechanical resonator and an optical or microwave mode of a cavi…
Quasi-locality and efficient simulation of Markovian quantum dynamics
Thomas Barthel, Martin Kliesch
We consider open many-body systems governed by a time-dependent quantum master equation with short-range interactions. With a generalized Lieb-Robinson bound, we show that the evol…
Continuous-variable quantum compressed sensing
Matthias Ohliger, Vincent Nesme, David Gross +2
We significantly extend recently developed methods to faithfully reconstruct unknown quantum states that are approximately low-rank, using only a few measurement settings. Our new…
Gaussification and entanglement distillation of continuous variable systems: a unifying picture
Earl T. Campbell, Jens Eisert
Distillation of entanglement using only Gaussian operations is an important primitive in quantum communication, quantum repeater architectures, and distributed quantum computing. E…