611 citations
- University of CataniaIT114 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di CataniaIT61 papers
- National Research CouncilLK50 papers
- Centre National de la Recherche ScientifiqueFR41 papers
- National University of SingaporeSG32 papers
- University of Milano-BicoccaIT31 papers
- Centre for Quantum TechnologiesSG27 papers
- Université Grenoble AlpesFR23 papers
- Nanyang Technological UniversitySG21 papers
- University of PalermoIT19 papers
- National Institute of Education18 papers
- UMI MajuLabSG18 papers
5 papers · 2 filters
Topological order in 1D Cluster state protected by symmetry
Wonmin Son, Luigi Amico, Vlatko Vedral
We demonstrate how to construct the Z2*Z2 global symmetry which protects the ground state degeneracy of cluster states for open boundary conditions. Such a degeneracy ultimately ar…
Optimal correlations in many-body quantum systems
Luigi Amico, Davide Rossini, Alioscia Hamma +1
Information and correlations in a quantum system are closely related through the process of measurement. We explore such relation in a many-body quantum setting, effectively bridgi…
Statistical mechanics of the Cluster-Ising model
Pietro Smacchia, Luigi Amico, Paolo Facchi +4
We study a Hamiltonian system describing a three-spin-1/2 cluster-like interaction competing with an Ising-like anti-ferromagnetic interaction. We compute free energy, spin correla…
Transmission of classical and quantum information through a quantum memory channel with damping
A. D'Arrigo, G. Benenti, G. Falci
We consider the transfer of classical and quantum information through a memory amplitude damping channel. Such a quantum channel is modeled as a damped harmonic oscillator, the int…
Quantum phase transition between cluster and antiferromagnetic states
Wonmin Son, Luigi Amico, Rosario Fazio +3
We study a Hamiltonian system describing a three spin-1/2 cluster-like interaction competing with an Ising-like exchange. We show that the ground state in the cluster phase possess…