251 citations
- Universidade Federal do ParanáBR23 papers
- Max Planck Institute for the Physics of Complex SystemsDE7 papers
- Universidade Federal de PelotasBR7 papers
- Universidade de São PauloBR6 papers
- Universidade Federal do Rio Grande do SulBR6 papers
- Centre National de la Recherche ScientifiqueFR5 papers
- Instituto Nacional de Pesquisas EspaciaisBR5 papers
- Universidade Federal de Santa CatarinaBR5 papers
- Universidade Federal do ABCBR5 papers
- International Center for Relativistic AstrophysicsIT4 papers
- Universidade Federal de São CarlosBR4 papers
- Centro Brasileiro de Pesquisas FísicasBR3 papers
99 papers
Topological insulator realization induced by fermionic interaction through BF mediators
G. B. de Gracia, R. da Rocha, A. A. Nogueira +1
This paper demonstrates that ordinary fermions, interacting via a BF mediator, form a renormalized structure with non-trivial topological properties. We explore the analogy between…
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…
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…
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…
Screening in the Heitler-London Model: Revisiting the Bonding and Antibonding States of the Hydrogen Molecule
Washington P. da Silva, Daniel Vieira, Jonas Maziero +1
The present manuscript revisits one of the earliest approaches to treating molecular systems within the Schrödinger formalism of quantum mechanics: the Heitler-London (HL) model. O…
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…