Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Guérin, Stéphane"'
Effective models to describe the dynamics of an open cavity have been extensively discussed in the literature. In many of these models the cavity leakage to the outside is treated as a loss introduced phenomenologically. In contrast to these, we focu
Externí odkaz:
http://arxiv.org/abs/2410.06379
Publikováno v:
Phys. Rev. A 108, 042610 (2023)
Using optimal control, we establish and link the ultimate bounds in time (referred to as quantum speed limit) and energy of two- and three-level quantum nonlinear systems which feature 1:2 resonance. Despite the unreachable complete inversion, by usi
Externí odkaz:
http://arxiv.org/abs/2303.15359
The ability of pulse-shaping devices to generate accurately quantum optimal control is a strong limitation to the development of quantum technologies. We propose and demonstrate a systematic procedure to design robust digital control processes adapte
Externí odkaz:
http://arxiv.org/abs/2210.09212
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 55 194001 (2022)
Robust time-optimal control is known to feature constant (square) pulses. We analyze fast adiabatic dynamics that preserve robustness by using alternative smooth quasi-square pulses, typically represented by hyper-Gaussian pulses. We here consider th
Externí odkaz:
http://arxiv.org/abs/2209.12293
Publikováno v:
Phys. Rev. A 105, 032807 (2022)
We apply the inverse geometric optimization technique to generate an optimal and robust stimulated Raman exact passage (STIREP) considering the loss of the upper state as a characterization parameter. Control fields temporal shapes that are optimal w
Externí odkaz:
http://arxiv.org/abs/2209.07631
Over the last decades, quantum optics has evolved from high quality factor cavities in the early experiments toward new cavity designs involving leaky modes. Despite very reliable models, in the concepts of cavity quantum electrodynamics, photon leak
Externí odkaz:
http://arxiv.org/abs/2207.04517
We evaluate the exact dipole coupling strength between a single emitter and the radiation field within an optical cavity, taking into account the effects of multilayer dielectric mirrors. Our model allows one to freely vary the resonance frequency of
Externí odkaz:
http://arxiv.org/abs/2009.07949
Publikováno v:
Phys. Rev. A 102, 052203 (2020)
Adiabatic passage is a standard tool for achieving robust transfer in quantum systems. We show that, in the context of driven nonlinear Hamiltonian systems, adiabatic passage becomes highly non-robust when the target is unstable. We show this result
Externí odkaz:
http://arxiv.org/abs/2005.12321
Publikováno v:
Phys. Rev. A 100, 023415 (2019)
We developed single-shot shaped pulses for ultra high fidelity (UH-fidelity) population transfer on a 3-level quantum system in lambda configuration. To ensure high fidelity, we use the Lewis-Riesenfeld (L-R) method to derive a family of solutions le
Externí odkaz:
http://arxiv.org/abs/1909.11710
Publikováno v:
Phys. Rev. A 101, 012122 (2020)
We study the paradigmatic model of a qubit interacting with a structured environment and driven by an external field by means of a microscopic and a phenomenological model. The validity of the so-called fixed-dissipator (FD) assumption, where the dis
Externí odkaz:
http://arxiv.org/abs/1908.03002