12 papers
Robust entanglement detection in arbitrary two-mode Gaussian state: a Stokes-like operator-based approach
Arijit Dutta, Sibasish Ghosh, Jaewan Kim +1
Detection of entanglement in quantum states is one of the most important problems in quantum information processing. However, it is one of the most challenging tasks to find a univ…
General teleportation channel in Fermionic Quantum Theory
Sanam Khan, R. Jehadeesan, Sibasish Ghosh
Quantum Teleportation is a very useful scheme for transferring quantum information. Given that the quantum information is encoded in a state of a system of distinguishable particle…
Super-Extensive Charging Power in the Absence of Global Operations
Anupam, Sheryl Mathew, Sibasish Ghosh
Quantum batteries have emerged as a platform for investigating whether quantum effects can accelerate energy storage beyond classical limits. Although a variety of charging schemes…
Convex Optimization Approaches to Optimal Teleportation Fidelity in Linear Three-Party Networks
Arkaprabha Ghosal, Jatin Ghai, Tanmay Saha +2
We study the maximum achievable quantum teleportation fidelity between two distant parties, Alice and Charlie, where each of them share a bipartite quantum state only with a common…
Nonlinear refrigerator with a finite-sized cold heat bath
I. Iyyappan, Yuki Izumida, Sibasish Ghosh
We study the refrigerator working between a finite-sized cold heat bath and an infinite-sized hot heat bath (environment) in the nonlinear response regime. We assume that the initi…
Asymptotic TCL4 Generator for the Spin-Boson Model: Analytical Derivation and Benchmarking
Prem Kumar, K. P. Athulya, Sibasish Ghosh
The spin-boson model is a widely used model for understanding the properties of a two-level open quantum system. Accurately describing its dynamics often requires going beyond the…