450 citations · 2.5k across the 85 of their papers we have counts for
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Detecting phase boundaries of quantum spin-1/2 XXZ ladder via bipartite and multipartite entanglement transitions
Sudipto Singha Roy, Himadri Shekhar Dhar, Debraj Rakshit +2
Phase transition in quantum many-body systems inevitably causes changes in certain physical properties which then serve as potential indicators of critical phenomena. Besides the t…
Monogamy of quantum correlations - a review
Himadri Shekhar Dhar, Amit Kumar Pal, Debraj Rakshit +2
Monogamy is an intrinsic feature of quantum correlations that gives rise to several interesting quantum characteristics which are not amenable to classical explanations. The monoga…
Response to defects in multi- and bipartite entanglement of isotropic quantum spin networks
Sudipto Singha Roy, Himadri Shekhar Dhar, Debraj Rakshit +2
Quantum networks are an integral component in performing efficient computation and communication tasks that are not accessible using classical systems. A key aspect in designing an…
Spontaneous magnetization of quantum spin model in joint presence of quenched and annealed disorder
Anindita Bera, Debraj Rakshit, Aditi Sen De +1
We investigate equilibrium statistical properties of the quantum XY spin-1/2 model in an external magnetic field when the interaction and field parts are subjected to quenched or/a…
Analytical recursive method to ascertain multisite entanglement in doped quantum spin ladders
Sudipto Singha Roy, Himadri Shekhar Dhar, Debraj Rakshit +2
We formulate an analytical recursive method to generate the wave function of doped short-range resonating valence bond (RVB) states as a tool to efficiently estimate multisite enta…
Conclusive Identification of Quantum Channels via Monogamy of Quantum Correlations
Asutosh Kumar, Sudipto Singha Roy, Amit Kumar Pal +3
We investigate the action of local and global noise on monogamy of quantum correlations, when monogamy scores are considered as observables, and three-qubit systems are subjected t…