7 papers
Coupled cluster theory for positron binding in anions and polyatomic molecules
Rosario R. Riso, Jan Haakon M. Trabski, Federico Rossi +2
We present the positron coupled cluster singles and doubles (POS-CCSD) method to calculate positron binding energies in molecules. This framework treats electrons and positrons on…
Fast Quantum Gates for Neutral Atoms Separated by a Few Tens of Micrometers
Matteo Bergonzoni, Rosario Roberto Riso, Guido Pupillo
We present a theoretical scheme for a family of fast and high-fidelity two-qubit iSWAP gates between neutral atoms separated by more than 20 um, enabled by resonant dipole-dipole s…
Polaritonic Bloch's Theorem beyond the Long-Wavelength Approximation
Giovanna Bruno, Rosario Roberto Riso, Henrik Koch +1
Cavity quantum electrodynamics provides a powerful tool to manipulate material properties, yet it remains a matter of debate whether and how quantized fields affect the periodicity…
eT 2.0: An efficient open-source molecular electronic structure program
Sarai Dery Folkestad, Eirik F. Kjønstad, Alexander C. Paul +34
The eT program is an open-source electronic structure program with emphasis on performance and modularity. As its name suggests, the program features extensive coupled cluster capa…
Unveiling chiral electron-photon correlation effects in circularly polarized optical devices
Yassir El Moutaoukal, Rosario R. Riso, Andrea Bianchi +1
Strong coupling with circularly polarized vacuum fluctuations offers a viable route to manipulate molecular chirality. While experiments are advancing toward the realization of chi…
Strong coupling Møller-Plesset perturbation theory
Yassir El Moutaoukal, Rosario R. Riso, Matteo Castagnola +2
Perturbative approaches are methods to efficiently tackle many-body problems, offering both intuitive insights and analysis of correlation effects. However, their application to sy…