923 citations · 1.7k across the 55 of their papers we have counts for
7 papers · 1 filter
Gaussian interferometric power as a measure of continuous variable non-Markovianity
Leonardo A. M. Souza, Himadri Shekhar Dhar, Manabendra Nath Bera +2
We investigate the non-Markovianity of continuous variable Gaussian quantum channels through the evolution of an operational metrological quantifier, namely the Gaussian interferom…
Diverging scaling with converging multisite entanglement in odd and even quantum Heisenberg ladders
Sudipto Singha Roy, Himadri Shekhar Dhar, Debraj Rakshit +2
We investigate finite-size scaling of genuine multisite entanglement in the ground state of quantum spin-1/2 Heisenberg ladders. We obtain the ground states of odd- and even-legged…
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…
Maximally coherent mixed states: Complementarity between maximal coherence and mixedness
Uttam Singh, Manabendra Nath Bera, Himadri Shekhar Dhar +1
Quantum coherence is a key element in topical research on quantum resource theories and a primary facilitator for design and implementation of quantum technologies. However, the re…
Measuring Quantum Coherence with Entanglement
Alexander Streltsov, Uttam Singh, Himadri Shekhar Dhar +2
Quantum coherence is an essential ingredient in quantum information processing and plays a central role in emergent fields such as nanoscale thermodynamics and quantum biology. How…
Adiabatic freezing of long-range quantum correlations in spin chains
Himadri Shekhar Dhar, Debraj Rakshit, Aditi Sen De +1
We consider a process to create quasi long-range quantum discord between the non-interacting end spins of a quantum spin chain, with the end spins weakly coupled to the bulk of the…
Characterizing non-Markovianity via quantum interferometric power
Himadri Shekhar Dhar, Manabendra Nath Bera, Gerardo Adesso
Non-Markovian evolution in open quantum systems is often characterized in terms of the backflow of information from environment to system and is thus an important facet in investig…