1 citations · 2 across the 5 of their papers we have counts for
6 papers
Quantum filtering using POVM measurements
Ram A. Somaraju, Alain Sarlette, Hugo Thienpont
The objective of this work is to develop a recursive, discrete time quantum filtering equation for a system that interacts with a probe, on which measurements are performed accordi…
Feedback stabilization of discrete-time quantum systems subject to non-demolition measurements with imperfections and delays
Hadis Amini, Abhinav Somaraju, Igor Dotsenko +3
We consider a controlled quantum system whose finite dimensional state is governed by a discrete-time nonlinear Markov process. In open-loop, the measurements are assumed to be qua…
Degrees of Freedom of a Communication Channel and Kolmogorov numbers
Ram Somaraju, Jochen Trumpf
In this note, we show that the operator theoretic concept of Kolmogorov numbers and the number of degrees of freedom at level of a communication channel are closely related. Li…
Approximate stabilization of an infinite dimensional quantum stochastic system
Ram Somaraju, Mazyar Mirrahimi, Pierre Rouchon
We propose a feedback scheme for preparation of photon number states in a microwave cavity. Quantum Non-Demolition (QND) measurements of the cavity field and a control signal consi…
Degrees of Freedom of a Communication Channel: Using Generalised Singular Values
Ram Somaraju, Jochen Trumpf
A fundamental problem in any communication system is: given a communication channel between a transmitter and a receiver, how many "independent" signals can be exchanged between th…
Uncertainty Principles for Signal Concentrations
Ram Somaraju, Leif W. Hanlen
Uncertainty principles for concentration of signals into truncated subspaces are considered. The ``classic'' uncertainty principle is explored as a special case of a more general o…