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6 papers · 2 filters
Non-Perturbative Entangling Gates between Distant Qubits using Uniform Cold Atom Chains
Leonardo Banchi, Abolfazl Bayat, Paola Verrucchi +1
We propose a new fast scalable method for achieving a two-qubit entangling gate between arbitrary distant qubits in a network by exploiting dispersionless propagation in uniform ch…
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…
Optimal dynamics for quantum-state and entanglement transfer through homogeneous quantum wires
Leonardo Banchi, Tony John George Apollaro, Alessandro Cuccoli +2
It is shown that effective quantum-state and entanglement transfer can be obtained by inducing a coherent dynamics in quantum wires with homogeneous intrawire interactions. This go…
A high-fidelity noiseless amplifier for quantum light states
A. Zavatta, J. Fiurásek, M. Bellini
Noise is the price to pay when trying to clone or amplify arbitrary quantum states. The quantum noise associated to linear phase-insensitive amplifiers can only be avoided by relax…
Coherent scattering of a Multiphoton Quantum Superposition by a Mirror-BEC
Francesco De Martini, Fabio Sciarrino, Chiara Vitelli +1
We present the proposition of an experiment in which the multiphoton quantum superposition consisting of N= 10^5 particles generated by a quantum-injected optical parametric amplif…
Manipulating and protecting entanglement by means of spin environments
T. J. G. Apollaro, A. Cuccoli, C. Di Franco +3
We study the dynamical behavior of two initially entangled qubits, each locally coupled to an environment embodied by an interacting spin chain. We consider energy-exchange qubit-e…