25 citations · 81 across the 8 of their papers we have counts for
8 papers
Quantum state smoothing cannot be assumed classical even when the filtering and retrofiltering are classical
Kiarn T. Laverick, Prahlad Warszawski, Areeya Chantasri +1
State smoothing is a technique to estimate a state at a particular time, conditioned on information obtained both before (past) and after (future) that time. For a classical system…
Solving quantum trajectories for systems with linear Heisenberg-picture dynamics and Gaussian measurement noise
P. Warszawski, H. M. Wiseman, A. C. Doherty
We study solutions to the quantum trajectory evolution of -mode open quantum systems possessing a time-independent Hamiltonian, linear Heisenberg-picture dynamics, and Gaussian…
Open quantum systems are harder to track than open classical systems
Prahlad Warszawski, Howard M. Wiseman
For a Markovian open quantum system it is possible, by continuously monitoring the environment, to know the stochastically evolving pure state of the system without altering the ma…
Symmetries and physically realizable ensembles for open quantum systems
Prahlad Warszawski, Howard M. Wiseman
A -dimensional Markovian open quantum system will undergo stochastic evolution which preserves pure states, if one monitors without loss of information the bath to which it is c…
Tomography of an optomechanical oscillator via parametrically amplified position measurement
P. Warszawski, A. Szorkovszky, W. P. Bowen +1
We propose a protocol for quantum state tomography of nonclassical states in optomechanical systems. Using a parametric drive, the procedure overcomes the challenges of weak optome…
Dynamical parameter estimation using realistic photodetection
P. Warszawski, Jay Gambetta, H. M. Wiseman
We investigate the effect of imperfections in realistic detectors upon the problem of quantum state and parameter estimation by continuous monitoring of an open quantum system. Spe…