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20082026
most citedThe DIRAC code for relativistic molecular calculations

366 citations

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quant-ph2025

Implementing a Universal Set of Geometric Quantum Gates through Dressed-State assisted STA

M. Estefanía Rus, Alejandro Ferrón, Omar Osenda +1

Geometric quantum computation relies on the geometric phase that arises in adiabatic cyclic evolutions of non-degenerate quantum systems, enabling the design of robust quantum gate…

quant-ph2022

Exact solution of a family of staggered Heisenberg chains with conclusive pretty good quantum state transfer

Pablo Serra, Alejandro Ferrón, Omar Osenda

We construct the exact solution for a family of one-half spin chains explicitly. The spin chains Hamiltonian corresponds to an isotropic Heisenberg Hamiltonian, with staggered exch…

quant-ph2021★ 10 cited

Understanding the propagation of excitations in quantum spin chains with different kind of interactions

Alejandro Ferrón, Pablo Serra, Omar Osenda

The dynamical behaviour of the quantum state of different quantum spin chains, with designed site dependent interaction strengths, is analyzed when the initial state belongs to the…

quant-ph2021★ 17 cited

Pretty good quantum state transfer on isotropic and anisotropic Heisenberg spin chains with tailored site dependent exchange couplings

Pablo Serra, Alejandro Ferrón, Omar Osenda

Using a global optimization algorithm we obtain spin chains with site-dependent exchange coefficients which allow almost perfect quantum state transfer between the extremes of the…

quant-ph2020★ 20 cited

Controlled quantum state transfer in spin chains at the Quantum Speed Limit

Diego S. Acosta Coden, Sergio S. Gómez, Alejandro Ferrón +1

The Quantum Speed Limit can be found in many different situations, in particular in the propagation of information through quantum spin chains. In homogeneous chains it implies tha…

quant-ph2013★ 8 cited

Quantum control of a model qubit based on a multi-layered quantum dot

Alejandro Ferrón, Pablo Serra, Omar Osenda

In this work we present a model qubit whose basis states are eigenstates of a multi-layered quantum dot. We show that the proper design of the quantum dot results in qubit states t…

quant-ph2010★ 29 cited

Entropy, fidelity, and double orthogonality for resonance states in two-electron quantum dots

Federico M. Pont, Omar Osenda, Pablo Serra +1

Resonance states of a two-electron quantum dot are studied using a variational expansion with both real basis-set functions and complex scaling methods. The two-electron entangleme…