132 citations · 3k across the 144 of their papers we have counts for
6 papers · 2 filters
The two-qubit amplitude damping channel: characterization using quantum stabilizer codes
S. Omkar, R. Srikanth, Subhashish Banerjee +1
A protocol based on quantum error correction based characterization of quantum dynamics (QECCD) is developed for quantum process tomography on a two-qubit system interacting dissip…
Quantum Fisher and Skew information for Unruh accelerated Dirac qubit
Subhashish Banerjee, Ashutosh Kumar Alok, S. Omkar
We develop a Bloch vector representation of Unruh channel for a Dirac field mode. This is used to provide a unified, analytical treatment of quantum Fisher and Skew information for…
Tomograms for open quantum systems: in(finite) dimensional optical and spin systems
Kishore Thapliyal, Subhashish Banerjee, Anirban Pathak
Tomograms are obtained as probability distributions and are used to reconstruct a quantum state from experimentally measured values. We study the evolution of tomograms for differe…
Quasiprobability distributions in open quantum systems: spin-qubit systems
Kishore Thapliyal, Subhashish Banerjee, Anirban Pathak +2
Quasiprobability distributions (QDs) in open quantum systems are investigated for , spin like systems, having relevance to quantum optics and information. In this work, effe…
A graph theoretical approach to states and unitary operations
Supriyo Dutta, Bibhas Adhikari, Subhashish Banerjee
Building upon our previous work, on graphical representation of a quantum state by signless Laplacian matrix, we pose the following question. If a local unitary operation is applie…
Quantum code for quantum error characterization
S. Omkar, R. Srikanth, Subhashish Banerjee
A quantum error correcting code is a subspace such that allowed errors acting on any state in can be corrected. A quantum code for which state recovery…