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5 papers · 2 filters
Entanglement production by quantum error correction in the presence of correlated environment
G. De Chiara, R. Fazio, C. Macchiavello +1
We analyze the effect of a quantum error correcting code on the entanglement of encoded logical qubits in the presence of a dephasing interaction with a correlated environment. Suc…
Measurement and Information Extraction in Complex Dynamics Quantum Computation
G. Casati, S. Montangero
We address the problem related to the extraction of the information in the simulation of complex dynamics quantum computation. Here we present an example where important informatio…
Dynamics of Entanglement in One-Dimensional Spin Systems
L. Amico, A. Osterloh, F. Plastina +2
We study the dynamics of quantum correlations in a class of exactly solvable Ising-type models. We analyze in particular the time evolution of initial Bell states created in a full…
Dynamics of entanglement in quantum computers with imperfections
Simone Montangero, Giuliano Benenti, Rosario Fazio
The dynamics of the pairwise entanglement in a qubit lattice in the presence of static imperfections exhibits different regimes. We show that there is a transition from a perturbat…
Berry phase for a spin 1/2 in a classical fluctuating field
Gabriele De Chiara, G. Massimo Palma
The effect of fluctuations in the classical control parameters on the Berry phase of a spin 1/2 interacting with a adiabatically cyclically varying magnetic field is analyzed. It i…