Paolo Zanardi

Noiseless quantum codes

In this paper we study a model quantum register

Quantum Information Processing with Semiconductor Macroatoms

R

Decay of Loschmidt echo enhanced by quantum criticality

made of

Ground state overlap and quantum phase transitions.

N

Quantum entanglement in fermionic lattices

replicas (cells) of a given finite-dimensional quantum system S. Assuming that all cells are coupled with a common environment with equal strength we show that, for

Entangling power of quantum evolutions

N

Quantum tensor product structures are observable induced

large enough, in the Hilbert space of

Virtual Quantum Subsystems

R

Non-Abelian Berry connections for quantum computation

there exists a linear subspace

QUANTUM INFORMATION IN SEMICONDUCTORS : NOISELESS ENCODING IN A QUANTUM-DOT ARRAY

{C}_{N}