195 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Raman Research InstituteIN29 papers
- Indian Institute of Technology JodhpurIN27 papers
- Manipal Academy of Higher EducationIN19 papers
- Indian Institute of Science BangaloreIN13 papers
- Jaypee Institute of Information TechnologyIN13 papers
- National Institute for Theoretical PhysicsZA11 papers
- University of KwaZulu-NatalZA9 papers
- Bose InstituteIN7 papers
- Chennai Mathematical InstituteIN6 papers
- Institute of Mathematical SciencesIN6 papers
- University of WaterlooCA6 papers
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicCZ5 papers
12 papers · 2 filters
On the non-Markovianity of quantum semi-Markov processes
Shrikant Utagi, Subhashish Banerjee, R. Srikanth
The non-Markovianity of the stochastic process called the quantum semi-Markov (QSM) process is studied using a recently proposed quantification of memory based on the deviation fro…
Noiseless attack and counterfactual security of quantum key distribution
Vinod N. Rao, R. Srikanth
Counterfactual quantum key distribution (QKD) enables two parties to share a secret key using an interaction-free measurement. Here, we point out that the efficiency of counterfact…
Distinguishing environment-induced non-Markovianity from subsystem dynamics
Subhashish Banerjee, Javid Naikoo, R. Srikanth
Quantum non-Markovianity modifies the environmental decoherence of a system. This situation is enriched in complex systems owing to interactions among subsystems. We consider the p…
Singularities, mixing and non-Markovianity of Pauli dynamical maps
Shrikant Utagi, Vinod N. Rao, R. Srikanth +1
Quantum non-Markovianity of channels can be produced by mixing Markovian channels, as observed recently by various authors. We consider an analogous question of whether singulariti…
The operational reality of quantum nonlocality
R. Srikanth
Does the remote measurement-disturbance of the quantum state of a system by measurement on system entangled with , constitute a real disturbance -- i.e., an objective al…
Compressed Sensing Tomography for qudits in Hilbert spaces of non-power-of-two dimensions
Revanth Badveli, Vinayak Jagadish, R. Srikanth +1
The techniques of low-rank matrix recovery were adapted for Quantum State Tomography (QST) previously by D. Gross et al. [Phys. Rev. Lett. 105, 150401 (2010)], where they consider…
Quantum causal correlations and non-Markovianity of quantum evolution
Shrikant Utagi
A non-Markovianity measure for quantum channels is introduced based on causality measure - a monotone of causal (temporal) correlations - arising out of the pseudo-density matrix (…
Noisy three-player dilemma game: Robustness of the quantum advantage
Pranav Kairon, Kishore Thapliyal, R. Srikanth +1
Games involving quantum strategies often yield higher payoff. Here, we study a practical realization of the three-player dilemma game using the superconductivity-based quantum proc…
Hierarchy of quantum correlations under non-Markovian dynamics
K. G Paulson, Ekta Panwar, Subhashish Banerjee +1
We investigate the dynamics of quantum correlations (QC) under the effects of reservoir memory, as a resource for quantum information and computation tasks. Quantum correlations of…
Ping-pong quantum key distribution with trusted noise: non-Markovian advantage
Shrikant Utagi, R. Srikanth, Subhashish Banerjee
The ping-pong protocol adapted for quantum key distribution is studied in the trusted quantum noise scenario, wherein the legitimate parties can add noise locally. For a well-studi…
Dynamics of quantum correlations in a Qubit-Oscillator system interacting via a dissipative bath
Revanth Badveli, Vinayak Jagadish, S. Akshaya +2
The entanglement dynamics in a bipartite system consisting of a qubit and a harmonic oscillator interacting only through their coupling with the same bath is studied. The considere…
A class of quasi-eternal non-Markovian Pauli channels and their measure
Shrikant Utagi, Vinod N. Rao, R. Srikanth +1
We study a class of qubit non-Markovian general Pauli dynamical maps with multiple singularities in the generator. We discuss a few easy examples involving trigonometric or other n…