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19922026
Showing 2009 · quant-phShow all

11 papers · 2 filters

quant-ph2009★ 13 cited

Entanglement renormalization and boundary critical phenomena

P. Silvi, V. Giovannetti, P. Calabrese +2

The multiscale entanglement renormalization ansatz is applied to the study of boundary critical phenomena. We compute averages of local operators as a function of the distance from…

quant-ph2009★ 58 cited

Critical properties of homogeneous binary trees

P. Silvi, V. Giovannetti, S. Montangero +3

Many-body states whose wave-function admits a representation in terms of a uniform binary-tree tensor decomposition are shown to obey to power-law two-body correlations functions.…

quant-ph2009★ 20 cited

Efficient Generation of a Maximally Entangled State by Repeated On- and Off-Resonant Scattering of Ancilla Qubits

Kazuya Yuasa, Daniel Burgarth, Vittorio Giovannetti +1

A scheme for preparing two fixed non-interacting qubits in a maximally entangled state is presented. By repeating on- and off-resonant scattering of ancilla qubits, the state of th…

quant-ph2009★ 56 cited

Topological Order Following a Quantum Quench

D. I. Tsomokos, A. Hamma, W. Zhang +2

We determine the conditions under which topological order survives a rapid quantum quench. Specifically, we consider the case where a quantum spin system is prepared in the ground…

quant-ph2009★ 19 cited

Teleportation-Induced Correlated Quantum Channels

Filippo Caruso, Vittorio Giovannetti, G. Massimo Palma

Quantum teleportation of a n-qubit state performed using as entangled resource a general bipartite state of 2n qubits instead of n Bell states is equivalent to a correlated Pauli c…

quant-ph2009★ 42 cited

Capacities of lossy bosonic memory channels

Cosmo Lupo, Vittorio Giovannetti, Stefano Mancini

We introduce a general model for a lossy bosonic memory channel and calculate the classical and the quantum capacity, proving that coherent state encoding is optimal. The use of a…