43 citations · 257 across the 27 of their papers we have counts for
27 papers
Entanglement links and the quasiparticle picture
Silvia N. Santalla, Giovanni Ramírez, Sudipto Singha Roy +2
The time evolution of a quantum state with short-range correlations after a quench to a one-dimensional critical Hamiltonian can be understood using the quasi-particle picture, whi…
Emergent geometry from entanglement structure
Sudipto Singha Roy, Silvia N. Santalla, Javier Rodríguez-Laguna +1
We attempt to reveal the geometry, emerged from the entanglement structure of any general -party pure quantum many-body state by representing entanglement entropies correspondin…
Bulk-edge correspondence in the Haldane phase of the bilinear-biquadratic spin-1 Hamiltonian
Sudipto Singha Roy, Silvia N. Santalla, Javier Rodríguez-Laguna +1
The Haldane phase is the prototype of symmetry protected topological (SPT) phases of spin chain systems. It can be protected by several symmetries having in common the degeneracy o…
Nearly Markovian maps and entanglement-based bound on corresponding non-Markovianity
Sreetama Das, Sudipto Singha Roy, Samyadeb Bhattacharya +1
We identify a set of dynamical maps of open quantum system, and refer to them as "-Markovian" maps. It is constituted of maps which, in a higher dimensional system-environment…
Trends of information backflow in disordered spin chains
Sudipto Singha Roy, Utkarsh Mishra, Debraj Rakshit
We investigate the trends of information backflow associated with the dynamics of a sub-part of a disordered spin-1/2 transverse field Heisenberg chain for different regimes of the…
Effect of long-range interactions on multipartite entanglement in Heisenberg chains
Sudipto Singha Roy, Himadri Shekhar Dhar
It is well known that the notions of spatial locality are often lost in quantum systems with long-range interactions, as exhibited by the emergence of phases with exotic long-range…