Alejandro D. Somoza
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View article: Nonlinear dynamics as a ground-state solution on quantum computers
Nonlinear dynamics as a ground-state solution on quantum computers Open
For the solution of time-dependent nonlinear differential equations, we present variational quantum algorithms (VQAs) that encode both space and time in qubit registers. The spacetime encoding enables us to obtain the entire time evolution…
View article: Nonlinear dynamics as a ground-state solution on quantum computers
Nonlinear dynamics as a ground-state solution on quantum computers Open
For the solution of time-dependent nonlinear differential equations, we present variational quantum algorithms (VQAs) that encode both space and time in qubit registers. The spacetime encoding enables us to obtain the entire time evolution…
View article: Driving force and nonequilibrium vibronic dynamics in charge separation of strongly bound electron–hole pairs
Driving force and nonequilibrium vibronic dynamics in charge separation of strongly bound electron–hole pairs Open
Electron-hole pairs in organic photovoltaics efficiently dissociate although their Coulomb-binding energy exceeds thermal energy at room temperature. The vibronic coupling of electronic states to structured vibrational environments contain…
View article: Driving Force and Nonequilibrium Vibronic Dynamics in Charge Separation of Strongly Bound Electron-Hole Pairs
Driving Force and Nonequilibrium Vibronic Dynamics in Charge Separation of Strongly Bound Electron-Hole Pairs Open
Electron-hole pairs in organic photovoltaics dissociate efficiently despite their Coulomb-binding energy exceeding thermal energy at room temperature. The electronic states involved in charge separation couple to structured vibrational env…
View article: Polaron dynamics of Bloch–Zener oscillations in an extended Holstein model
Polaron dynamics of Bloch–Zener oscillations in an extended Holstein model Open
Recent developments in qubit engineering make circuit quantum electrodynamics devices promising candidates for the study of Bloch oscillations (BOs) and Landau–Zener (LZ) transitions. In this work, a hybrid circuit chain with alternating s…
View article: Optimized auxiliary oscillators for the simulation of general open quantum systems
Optimized auxiliary oscillators for the simulation of general open quantum systems Open
A method for the systematic construction of few-body damped harmonic\noscillator networks accurately reproducing the effect of general bosonic\nenvironments in open quantum systems is presented. Under the sole assumptions\nof a Gaussian en…
View article: Multicolor Quantum Control for Suppressing Ground State Coherences in Two-Dimensional Electronic Spectroscopy
Multicolor Quantum Control for Suppressing Ground State Coherences in Two-Dimensional Electronic Spectroscopy Open
The measured multidimensional spectral response of different light harvesting complexes exhibits oscillatory features which suggest an underlying coherent energy transfer. However, making this inference rigorous is challenging due to the d…
View article: Dissipation-Assisted Matrix Product Factorization
Dissipation-Assisted Matrix Product Factorization Open
Charge and energy transfer in biological and synthetic organic materials are strongly influenced by the coupling of electronic states to a highly structured dissipative environment. Nonperturbative simulations of these systems require a su…
View article: Dynamics of coherence, localization and excitation transfer in disordered nanorings
Dynamics of coherence, localization and excitation transfer in disordered nanorings Open
We reveal an optimal exciton–phonon coupling in LH2 that suppresses disorder-induced localization and facilitates excitation de-trapping. This excitation transfer enhancement, mediated by environmental phonons, is attributed to energy rela…
View article: Superradiance at the localization-delocalization crossover in tubular chlorosomes
Superradiance at the localization-delocalization crossover in tubular chlorosomes Open
We study the effect of disorder on spectral properties of tubular chlorosomes in green sulfur bacteria Cf. aurantiacus. Employing a Frenkel-exciton Hamiltonian with diagonal and off-diagonal disorder consistent with spectral and structural…