4 papers · 1 filter
Almost Global Stochastic Feedback Stabilization of Conditional Quantum Dynamics
Claudio Altafini, Francesco Ticozzi
We propose several parametrization-free solutions to the problem of quantum state reduction control by means of continuous measurement and smooth quantum feedback. In particular, w…
Characterizing 3-qubit UPB states: violations of LHV models, preparation via nonlocal unitaries and PPT entangled nonlocal orbits
Claudio Altafini
For the 3-qubit UPB state, i.e., the bound entangled state constructed from an Unextendable Product Basis of Bennett et al. (Phys. Rev. Lett. 82:5385, 1999), we provide a set of vi…
Controllability properties for finite dimensional quantum Markovian master equations
C. Altafini
Various notions from geometric control theory are used to characterize the behavior of the Markovian master equation for N-level quantum mechanical systems driven by unitary contro…
On the generation of sequential unitary gates from continuous time Schrodinger equations driven by external fields
C. Altafini
In all the various proposals for quantum computers, a common feature is that the quantum circuits are expected to be made of cascades of unitary transformations acting on the quant…