Decimation technique for open quantum systems: A case study with driven-dissipative bosonic chains

2022-05-26T20:22:00+02:00Tags: |

Authors: Gomez-Leon, Alvaro; Ramos, Tomas; Porras, Diego; Gonzalez-Tudela, Alejandro Journal: PHYSICAL REVIEW A Publication date: 2022/05/26 DOI: 10.1103/PhysRevA.105.052223 Abstract: The unavoidable coupling of quantum systems to external degrees of freedom leads to dissipative (nonunitary) dynamics, which can be radically different from closed-system scenarios. Such open quantum system dynamics is generally described by Lindblad master equations, [...]

Universal Deterministic Quantum Operations in Microwave Quantum Links

2022-05-24T20:22:00+02:00Tags: |

Authors: Penas, Guillermo F.; Puebla, Ricardo; Ramos, Tomas; Rabl, Peter; Jose Garcia-Ripoll, Juan Journal: PHYSICAL REVIEW APPLIED Publication date: 2022/05/24 DOI: 10.1103/PhysRevApplied.17.054038 Abstract: We propose a realistic setup, inspired by already existing experiments, within which we develop a general formalism for the implementation of distributed quantum gates. Mediated by a quantum link that establishes a [...]

Scalable estimation of pure multi-qubit states

2022-09-19T15:57:15+02:00Tags: , , , , |

Authors: Pereira, Luciano; Zambrano, Leonardo; Delgado, Aldo Journal: NPJ QUANTUM INFORMATION Publication date: 2022/05/13 DOI: 10.1038/s41534-022-00565-9 Abstract: We introduce an inductive n-qubit pure-state estimation method based on projective measurements on mn + 1 separable bases or m entangled bases plus the computational basis, with m >= 2. The method exhibits a favorable scaling in the [...]

Benchmarking quantum annealing dynamics: The spin-vector Langevin model

2022-09-19T15:57:16+02:00Tags: , |

Authors: Subires, David; Gomez-Ruiz, Fernando J.; Ruiz-Garcia, Antonia; Alonso, Daniel; del Campo, Adolfo Journal: PHYSICAL REVIEW RESEARCH Publication date: 2022/05/09 DOI: 10.1103/PhysRevResearch.4.023104 Abstract: The classical spin-vector Monte Carlo (SVMC) model is a reference benchmark for the performance of a quantum annealer. Yet, as a Monte Carlo method, SVMC is unsuited for an accurate description of [...]

Quenches to the critical point of the three-state Potts model: Matrix product state simulations and conformal field theory

2022-09-19T15:57:15+02:00Tags: , , , |

Authors: Robertson, Niall F.; Surace, Jacopo; Tagliacozzo, Luca Journal: PHYSICAL REVIEW B Publication date: 2022/05/04 DOI: 10.1103/PhysRevB.105.195103 Abstract: Conformal field theories (CFTs) have been used extensively to understand the physics of critical lattice models at equilibrium. However, the applicability of CFT calculations to the behavior of the lattice systems in the out-of-equilibrium setting is not [...]

PDRs4All: A JWST Early Release Science Program on Radiative Feedback from Massive Stars

2022-09-19T15:57:09+02:00Tags: |

Authors: Berne, Olivier; Habart, Emilie; Peeters, Els; Abergel, Alain; Bergin, Edwin A.; Bernard-Salas, Jeronimo; Bron, Emeric; Cami, Jan; Dartois, Emmanuel; Fuente, Asuncion; Goicoechea, Javier R.; Gordon, Karl D.; Okada, Yoko; Onaka, Takashi; Robberto, Massimo; Rollig, Markus; Tielens, Alexander G. G. M.; Vicente, Silvia; Wolfire, Mark G.; Alarcon, Felipe; Boersma, C.; Canin, Amelie; Chown, Ryan; Dicken, [...]

Atom scattering as a probe of the surface electron-phonon interaction at conducting surfaces

2022-05-01T20:22:00+02:00Tags: |

Authors: Manson, J. R.; Benedek, G.; Miret-Artes, Salvador Journal: SURFACE SCIENCE REPORTS Publication date: 2022/05/01 DOI: 10.1016/j.surfrep.2022.100552 Abstract: An atomic projectile colliding with a surface at kinetic energies in the thermal or hyperthermal range interacts with and is reflected by the electronic density well in front of the first layer of target atoms, and it [...]

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