18 citations · 66 across the 13 of their papers we have counts for
14 papers
Orientation-dependent Pauli noise in one-dimensional discrete-time quantum walks
Alejandro Contreras Reynoso, Adrian Ortega, Thomas Gorin
Discrete-time quantum walks exhibit ballistic spreading that is highly sensitive to decoherence. We study the long-time dynamics of a one-dimensional discrete-time quantum walk und…
Quantum backflow in biased tight-binding systems
Francisco Ricardo Torres Arvizu, Adrián Ortega, Hernán Larralde
We study the phenomenon of quantum backflow in tight-binding systems with complex couplings, considering different boundary conditions and lattice sizes. Backflow is an intrinsical…
Spectra and transport of probability and energy densities in a -symmetric square well with a delta-function potential
Francisco Ricardo Torres Arvizu, Adrian Ortega, Hernán Larralde
We study the spectrum, eigenstates and transport properties of a simple -symmetric model consisting in a finite, complex, square well potential with a delta…
On the energy density in quantum mechanics
Francisco Torres Arvizu, Adrian Ortega, Hernán Larralde
There are several definitions of energy density in quantum mechanics. These yield expressions that differ locally, but all satisfy a continuity equation and integrate to the value…
Orders of chaoticity of unitaries
Adrian Ortega, Andrew B. Frigyik, Mátyás Koniorczyk
We introduce the concept of K-th order chaoticity of unitaries, and analyze it for the case of two-level quantum systems. This property is relevant in a certain quantum random numb…
Testing quantum computers with the protocol of quantum state matching
Adrian Ortega, Orsolya Kálmán, Tamás Kiss
The presence of noise in quantum computers hinders their effective operation. Even though quantum error correction can theoretically remedy this problem, its practical realization…