20 citations · 72 across the 15 of their papers we have counts for
15 papers
BQP PSPACE
Shibdas Roy
The complexity class includes all computational problems that can be solved by a classical computer with polynomial memory. All problems are known to be solvable…
Fundamental noisy multiparameter quantum bounds
Shibdas Roy
Quantum multiparameter estimation involves estimating multiple parameters simultaneously and can be more precise than estimating them individually. Our interest here is to determin…
Robust Guaranteed-Cost Adaptive Quantum Phase Estimation
Shibdas Roy, Dominic W. Berry, Ian R. Petersen +1
Quantum parameter estimation plays a key role in many fields like quantum computation, communication and metrology. Optimal estimation allows one to achieve the most precise parame…
Robust Coherent-Classical Estimation of Linear Quantum Systems
Shibdas Roy, Ian R. Petersen
We study robust coherent-classical estimation for a class of physically realizable linear quantum systems with parameter uncertainties. Such a robust coherent-classical…
Robust Estimation of Uncertain Linear Quantum Systems
Shibdas Roy, Ian R. Petersen
We consider classical estimators for a class of physically realizable linear quantum systems. Optimal estimation using a complex Kalman filter for this problem has been previously…
Coherent-Classical Estimation for Linear Quantum Systems
Shibdas Roy, Ian R. Petersen, Elanor H. Huntington
We study a coherent-classical estimation scheme for a class of linear quantum systems, where the estimator is a mixed quantum-classical system that may or may not involve coherent…