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- Centre National de la Recherche ScientifiqueFR238 papers
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13 papers · 2 filters
Statistical mechanics of entanglement mediated by a thermal reservoir I
Endre Kajari, Alexander Wolf, Eric Lutz +1
Two defect particles that couple to a harmonic chain, acting as common reservoir, can become entangled even when the two defects do not directly interact and the harmonic chain is…
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…
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…
Quantum measurement occurrence is undecidable
J. Eisert, M. P. Mueller, C. Gogolin
In this work, we show that very natural, apparently simple problems in quantum measurement theory can be undecidable even if their classical analogues are decidable. Undecidability…
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…