2.9k citations · 18.4k across the 101 of their papers we have counts for
12 papers · 2 filters
Noise-driven quantum criticality
J. Eisert, T. Prosen
We discuss a notion of quantum critical exponents in open quantum many-body systems driven by quantum noise. We show that in translationally invariant quantum lattice models underg…
Information propagation for interacting particle systems
Norbert Schuch, Sarah K. Harrison, Tobias J. Osborne +1
We show that excitations of interacting quantum particles in lattice models always propagate with a finite speed of sound. Our argument is simple yet general and shows that by focu…
The optimal unitary dilation for bosonic Gaussian channels
Filippo Caruso, Jens Eisert, Vittorio Giovannetti +1
A generic quantum channel can be represented in terms of a unitary interaction between the information-carrying system and a noisy environment. Here, the minimal number of quantum…
Ground states of unfrustrated spin Hamiltonians satisfy an area law
Niel de Beaudrap, Tobias J. Osborne, Jens Eisert
We show that ground states of unfrustrated quantum spin-1/2 systems on general lattices satisfy an entanglement area law, provided that the Hamiltonian can be decomposed into neare…
Experimental implementation of the optimal linear-optical controlled phase gate
Karel Lemr, Antonin Cernoch, Jan Soubusta +3
We report on the first experimental realization of optimal linear-optical controlled phase gates for arbitrary phases. The realized scheme is entirely flexible in that the phase sh…
Preparing the bound instance of quantum entanglement
J. DiGuglielmo, A. Samblowski, B. Hage +3
Among the possibly most intriguing aspects of quantum entanglement is that it comes in "free" and "bound" instances. Bound entangled states require entangled states in preparation…