27 citations · 63 across the 9 of their papers we have counts for
10 papers
Occupation-selective photon-pair interactions in a flux-pumped SQUID resonator
L. N. Ferreira, D. Z. Rossatto, A. S. M. de Castro +1
Flux-pumped Josephson circuits provide a versatile platform for parametric photon generation and multimode bosonic control. We identify an occupation-conditioned pair interaction t…
Building Block For Universal Continuous Variables Computation In Superconducting Devices
Bruno A. Veloso, Ciro M. Diniz, Luiz O. R. Solak +3
Continuous variable (CV) quantum computation offers an alternative to qubit-based computing by exploiting the infinite-dimensional Hilbert space of bosonic modes. Despite recent pr…
Revisiting the Jaynes-Cummings model with time-dependent coupling
Thiago T. Tsutsui, Danilo Cius, Antonio Vidiella-Barranco +2
The Jaynes-Cummings (JC) model stands as a fully quantized, fundamental framework for exploring light-matter interactions, a timely reflection on a century of quantum theory. The t…
Quantum Resonator as a Directional Quantum Emitter
Luiz O. R. Solak, Bruno L. Vermes, Antonio S. M. de Castro +2
Single-photon sources are essential for testing fundamental physics and for the development of quantum technologies. In this work a single-photon source is investigated, based on a…
High Efficiency Storage of Quasi-Classical and Quantum States in Coupled Resonators
Luiz O. R. Solak, Ciro M. Diniz, Daniel Z. Rossatto +3
We propose an optical model in which both quantum and quasi-classical states can be ideally stored using coupled resonators. The protocol is based on a time-dependent coupling betw…
Reproducing the effects of quantum deformation in the undeformed Jaynes-Cummings model
Thiago T. Tsutsui, Antonio S. M. de Castro, Fabiano M. Andrade
In the Jaynes-Cummings (JC) model, the time dependence in the coupling parameter allows changes in the forms of the Rabi oscillations. In the inverse problem approach (IPA), the ti…
Unitary evolution for a two-level quantum system in fractional-time scenario
D. Cius, L. Menon, M. A. F. dos Santos +2
The time-evolution operator obtained from the fractional-time Schrödinger equation (FTSE) is said to be non-unitary since it does not preserve the norm of the vector state in time.…
Entanglement between uncoupled modes with time-dependent complex frequencies
D. Cius, G. M. Uhdre, A. S. M. de Castro +1
In this work we present the general unified description for the unitary time-evolution generated by time-dependent non-Hermitian Hamiltonians embedding the bosonic representations…
Enhancement of photon creation through the pseudo-Hermitian dynamical Casimir effect
D. Cius, F. M. Andrade, A. S. M. de Castro +1
We analyse here the pseudo-Hermitian Dynamical Casimir effect, proposing a non-Hermitian version of the effective Law's Hamiltonian used to describe the phenomenon. We verify that…
Exactly solvable time-dependent pseudo-Hermitian (1,1) Hamiltonian models
R. Grimaudo, A. S. M. de Castro, M. Kus +1
An exact analytical treatment of the dynamical problem for time-dependent 2x2 pseudo-hermitian su(1,1) Hamiltonians is reported. A class of exactly solvable and physically transpar…