71 citations · 598 across the 27 of their papers we have counts for
5 papers · 1 filter
Survival of time-evolved correlations depends on whether quenching is across critical point in XY spin chain
Utkarsh Mishra, Debraj Rakshit, R. Prabhu
The time-dynamics of quantum correlations in the quantum transverse anisotropic XY spin chain of infinite length is studied at zero as well as finite temperatures. The evolution oc…
Information complementarity in multipartite quantum states and security in cryptography
Anindita Bera, Asutosh Kumar, Debraj Rakshit +3
We derive complementarity relations for arbitrary quantum states of multiparty systems, of arbitrary number of parties and dimensions, between the purity of a part of the system an…
Subtraction better than addition: Entanglement in multimode squeezed vacuum post-interface with photons
Tamoghna Das, R. Prabhu, Aditi Sen De +1
We investigate the entanglement patterns of photon-added and -subtracted four-mode squeezed vacuum states. Entanglements in different scenarios are analyzed by varying the number o…
Forbidden regimes in the distribution of bipartite quantum correlations due to multiparty entanglement
Asutosh Kumar, Himadri Shekhar Dhar, R. Prabhu +2
Monogamy is a nonclassical property that limits the distribution of quantum correlation among subparts of a multiparty system. We show that monogamy scores for different quantum co…
Enhancement of Quantum Correlation Length in Quenched Disordered Spin Chains
Debasis Sadhukhan, Sudipto Singha Roy, Debraj Rakshit +3
Classical correlations of ground states typically decay exponentially and polynomially, respectively for gapped and gapless short-ranged quantum spin systems. In such systems, enta…