7 papers
Absorption-based qubit estimation in discrete-time quantum walks
Edgard P. M. Amorim, Lorena R. Cerutti, O. P. de Sá Neto +1
We investigate state estimation in discrete-time quantum walks with a single absorbing boundary. Using a spectral approach, we obtain closed expressions for the escape probability…
Charge readout electronics for the DUNE horizontal drift far detector: design and performance in ProtoDUNE-HD
DUNE Collaboration, S. Abbaslu, F. Abd Alrahman +1398
DUNE (Deep Underground Neutrino Experiment) is a long-baseline neutrino oscillation experiment currently under construction, whose far detectors will be the largest liquid argon ti…
Parrondo-type enhancement of quantum-state transfer in spin chains
Rafael Vieira, Edgard P. M. Amorim
Spin chains have been widely studied as quantum channels for short-distance communication in quantum devices, where many-body dynamics can mediate quantum-state transfer between di…
Barenco gate implementation using driven two- and three-qubit spin chains
Rafael Vieira, Edgard P. M. Amorim
We propose a protocol for implementing Barenco-type multi-qubit controlled gates using short driven spin chains. Starting from an Ising interaction with a transverse drive on the l…
Control of vertex probability via edge-weight modulation in continuous-time quantum walks
Rafael Vieira, Edgard P. M. Amorim
Continuous-time quantum walks (CTQWs) provide a versatile framework for exploring quantum transport on graphs. In this work, we investigate how the introduction of edge-weight modu…
Continuous-time quantum walks on a defective lattice: Boosting the spreading of delocalized states through Parrondo's strategy
João V. Cordeiro, Eduardo I. Duzzioni, Edgard P. M. Amorim
We investigate the quantum transport of delocalized states in continuous-time quantum walks (CTQWs) on a one-dimensional lattice containing a single defect. The defect is modeled b…