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18 papers · 2 filters
Generation of graph-state streams
Daniel Ballester, Jaeyoon Cho, M. S. Kim
We propose a protocol to generate a stream of mobile qubits in a graph state through a single stationary parent qubit and discuss two types of its physical implementation, namely,…
A simple trapped-ion architecture for high-fidelity Toffoli gates
Massimo Borrelli, Laura Mazzola, Mauro Paternostro +1
We discuss a simple architecture for a quantum Toffoli gate implemented using three trapped ions. The gate, which in principle can be implemented with a single laser-induced operat…
Hybrid methods for witnessing entanglement in a microscopic-macroscopic system
Nicolò Spagnolo, Chiara Vitelli, Mauro Paternostro +2
We propose a hybrid approach to the experimental assessment of the genuine quantum features of a general system consisting of microscopic and macroscopic parts. We infer entangleme…
Memory-keeping effects and forgetfulness in the dynamics of a qubit coupled to a spin chain
T. J. G. Apollaro, C. Di Franco, F. Plastina +1
Using recently proposed measures for non-Markovianity [H. P. Breuer, E. M. Laine, and J. Piilo, Phys. Rev. Lett. {\bf 103}, 210401 (2009)], we study the dynamics of a qubit coupled…
Faithful nonclassicality indicators and extremal quantum correlations in two-qubit states
Davide Girolami, Mauro Paternostro, Gerardo Adesso
The state disturbance induced by locally measuring a quantum system yields a signature of nonclassical correlations beyond entanglement. Here we present a detailed study of such co…
Non-locality of Two Ultracold Trapped Atoms
Thomás Fogarty, John Goold, Mauro Paternostro +1
We undertake a detailed analysis of the non-local properties of the fundamental problem of two trapped, distinguishable neutral atoms which interact with a short range potential ch…