63 citations · 92 across the 6 of their papers we have counts for
7 papers · 1 filter
Link representation of the entanglement entropies for all bipartitions
Sudipto Singha Roy, Silvia N. Santalla, Germán Sierra +1
We have recently shown that the entanglement entropy of any bipartition of a quantum state can be approximated as the sum of certain link strengths connecting internal and external…
Optimizing the spatial spread of a quantum walk
Gonzalo Martín-Vázquez, Javier Rodríguez-Laguna
We devise a protocol to build 1D time-dependent quantum walks in 1D maximizing the spatial spread throughout the procedure. We allow only one of the physical parameters of the coin…
Casimir forces on deformed fermionic chains
Begoña Mula, Silvia N. Santalla, Javier Rodríguez-Laguna
We characterize the Casimir forces for the Dirac vacuum on free-fermionic chains with smoothly varying hopping amplitudes, which correspond to (1+1)D curved spacetimes with a stati…
Entanglement as geometry and flow
Sudipto Singha Roy, Silvia N. Santalla, Javier Rodríguez-Laguna +1
We explore the connection between the area law for entanglement and geometry by representing the entanglement entropies corresponding to all bipartitions of an -party pure…
Breaking the Area Law: The Rainbow State
Giovanni Ramírez, Javier Rodríguez-Laguna, Germán Sierra
An exponential deformation of a 1D critical Hamiltonian, with couplings falling on a length scale , gives rise to ground states whose entanglement entropy follows a volume…
Fourier-space entanglement of spin chains
Miguel Ibáñez-Berganza, Javier Rodríguez-Laguna, Germán Sierra
Entanglement between different regions in momentum space is studied for ground states of some spin-chain Hamiltonians: the XY model, the Ising model in a transverse field (ITF) and…