2.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universidad Autónoma de MadridES618 papers
- Universidad Carlos III de MadridES550 papers
- Consejo Superior de Investigaciones CientíficasES480 papers
- Homi Bhabha National InstituteIN425 papers
- Universidad Complutense de MadridES350 papers
- Tata Institute of Fundamental ResearchIN132 papers
- Centre National de la Recherche ScientifiqueFR131 papers
- Indian Institute of Science BangaloreIN120 papers
- Indian Institute of Technology MadrasIN92 papers
- Chennai Mathematical InstituteIN82 papers
- Beijing Institute of Mathematical Sciences and Applications64 papers
- Harish-Chandra Research InstituteIN58 papers
13 papers · 2 filters
Operator-sum Representation for Bosonic Gaussian Channels
J. Solomon Ivan, Krishnakumar Sabapathy, R. Simon
Operator-sum or Kraus representations for single-mode Bosonic Gaussian channels are developed, and several of their consequences explored. Kraus operators are employed to bring out…
Quantumness of noisy quantum walks: a comparison between measurement-induced disturbance and quantum discord
Balaji R. Rao, R. Srikanth, C. M. Chandrashekar +1
Noisy quantum walks are studied from the perspective of comparing their quantumness as defined by two popular measures, measurement-induced disturbance (MID) and quantum discord (Q…
Approximate joint measurement of qubit observables through an Arthur-Kelly type model
Rajarshi Pal, Sibasish Ghosh
We consider joint measurement of two and three unsharp qubit observables through an Arthur-Kelly type joint measurement model for qubits. We investigate the effect of initial state…
Parrondo's game using a discrete-time quantum walk
C. M. Chandrashekar, Subhashish Banerjee
We present a new form of a Parrondo game using discrete-time quantum walk on a line. The two players A and B with different quantum coins operators, individually losing the game ca…
Chain of Hardy-type local reality constraints for qubits
Sibasish Ghosh, Shasanka Mohan Roy
Non-locality without inequality is an elegant argument introduced by L. Hardy for two qubit systems, and later generalised to qubits, to establish contradiction of quantum theo…
Zeno subspace in quantum-walk dynamics
C. M. Chandrashekar
We investigate the discrete-time quantum walk evolution under the influence of the periodic measurements in position subspace. The undisturbed survival probability of the particle…
Quantumness in decoherent quantum walk using measurement-induced disturbance
R. Srikanth, Subhashish Banerjee, C. M. Chandrashekar
The classicalization of a decoherent discrete-time quantum walk on a line or an n-cycle can be demonstrated in various ways that do not necessarily provide a geometry-independent d…
Other incarnations of the Gross-Pitaevskii dark soliton
Indubala I Satija, Radha Balakrishnan
We show that the dark soliton of the Gross-Pitaevskii equation (GPE) that describes the Bose-Einstein condensate (BEC) density of a system of weakly repulsive bosons, also describe…
Disordered quantum walk-induced localization of a Bose-Einstein condensate
C. M. Chandrashekar
We present an approach to induce localization of a Bose-Einstein condensate in a one-dimensional lattice under the influence of unitary quantum walk evolution using disordered quan…
A Generalized Master Equation for Janus Faced Coherent States
K. V. S. Shiv Chaitanya, V. Srinivasan
A general master equation for eigenstates of Janus Faced commutation relations is constructed.
Aspects of coherent states of nonlinear algebras
T. Shreecharan, K. V. S. Shiv Chaitanya
Various aspects of coherent states of nonlinear and algebras are studied. It is shown that the nonlinear Barut-Girardello and Perelomov coherent states…
Quantum to classical transition and entanglement sudden death in Gaussian states under local heat bath dynamics
Sandeep K Goyal, Sibasish Ghosh
Entanglement sudden death in spatially separated two-mode Gaussian states coupled to local thermal and squeezed thermal baths is studied by mapping the problem to that of the quant…
Entanglement generation in spatially separated systems using quantum walk
C. M. Chandrashekar, Sandeep K. Goyal, Subhashish Banerjee
We present a novel scheme to generate entanglement between two spatially separated systems. The scheme makes use of spatial entanglement generated by a single-particle quantum walk…