Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Courteille, Philippe W."'
Autor:
Araujo, Michelle O., Carvalho, Joao Carlos de Aquino, Courteille, Philippe W., Laliotis, Athanasios
Publikováno v:
Physical Review A 110, 032813 (2024)
Cooperative effects such as super- and subradiance can be observed in the fluorescence emitted by a system of N atoms in vacuum, after interaction with a laser beam. In the vicinity of a dielectric or metallic surface, Casimir-Polder effects can modi
Externí odkaz:
http://arxiv.org/abs/2408.12033
Autor:
Hernandez, Enrique, Suarez, Elmer, Lesanovsky, Igor, Olmos, Beatriz, Courteille, Philippe W., Slama, Sebastian
Dissipative light-matter systems can display emergent collective behavior. Here, we report a $\mathbb{Z}_2$-symmetry-breaking phase transition in a system of multi-level $^{87}$Rb atoms strongly coupled to a weakly driven two-mode optical cavity. In
Externí odkaz:
http://arxiv.org/abs/2405.09885
Autor:
Jerez, Dalila Rivero, Pessoa Jr, Claudio, de França, Gustavo, Teixeira, Raul Celistrino, Slama, Sebastian, Courteille, Philippe W.
We report on the observation of a novel manifestation of saturation-induced optical bistability in a resonantly pumped optical ring cavity interacting strongly with a cloud of atoms via a narrow atomic transition. The bistability emerges, above a cri
Externí odkaz:
http://arxiv.org/abs/2305.07133
Autor:
Suarez, Elmer, Carollo, Federico, Lesanovsky, Igor, Olmos, Beatriz, Courteille, Philippe W., Slama, Sebastian
We investigate experimentally and theoretically the collective coupling between atoms with multilevel ground state manifolds and an optical cavity mode. In our setup the cavity field optically pumps populations among the ground states. The ensuing dy
Externí odkaz:
http://arxiv.org/abs/2210.06085
Autor:
Rivero, Dalila, de Angelis, Vinicius S., Beli, Camila, Moreno, Michelle, Ambrosio, Leonardo, Courteille, Philippe W.
Publikováno v:
J. Opt. Soc. Am. B 37,2660-2667 (2020)
We explore a scheme for guiding cold atoms through a hollow Bessel beam generated by a single axicon and a lens from a 2D magneto-optical trap toward a science chamber. We compare the Bessel beam profiles measured along the optical axis to a numerica
Externí odkaz:
http://arxiv.org/abs/2010.09792
Publikováno v:
Phys. Rev. A 101, 023828 (2020)
The collective spontaneous emission of two point-dipole emitters near a plasmonic core-shell nanosphere is theoretically investigated. Based on the expansion of mode functions in vector spherical harmonics, we derive closed analytical expressions for
Externí odkaz:
http://arxiv.org/abs/2001.10096
Autor:
Suarez, Elmer, Auwärter, David, Arruda, Tiago J., Bachelard, Romain, Courteille, Philippe W., Zimmermann, Claus, Slama, Sebastian
This proposal investigates the photon-statistics of light emitted by a statistical ensemble of cold atoms excited by the near-field of an optical nanofiber tip. Dipole-dipole interactions of atoms at such short distance from each other suppress the s
Externí odkaz:
http://arxiv.org/abs/1809.07621
Publikováno v:
Phys. Rev. B 98, 245419 (2018)
Based on the Lorenz-Mie theory, we derive analytical expressions of radiative and nonradiative transition rates for different orientations of a point dipole emitter in the vicinity of an infinitely long circular cylinder of arbitrary radius. Special
Externí odkaz:
http://arxiv.org/abs/1809.05208
Autor:
Arruda, Tiago J., Martinez, Alexandre S., Pinheiro, Felipe A., Bachelard, Romain, Slama, Sebastian, Courteille, Philippe W.
Despite a long history, light scattering by particles with size comparable with the light wavelength still unveils surprising optical phenomena, and many of them are related to the Fano effect. Originally described in the context of atomic physics, t
Externí odkaz:
http://arxiv.org/abs/1808.06897
Publikováno v:
Phys. Rev. A 96, 043869 (2017)
We analytically study the spontaneous emission of a single optical dipole emitter in the vicinity of a plasmonic nanoshell, based on the Lorenz-Mie theory. We show that the fluorescence enhancement due to the coupling between optical emitter and sphe
Externí odkaz:
http://arxiv.org/abs/1706.04856