Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Riccardo Pennetta"'
Publikováno v:
APL Photonics, Vol 4, Iss 5, Pp 056105-056105-6 (2019)
We report on the properties of tapered single-ring hollow-core photonic-crystal fibers, with a particular emphasis on applications in nonlinear optics. The simplicity of these structures allows the use of non-invasive side-illumination to assess the
Externí odkaz:
https://doaj.org/article/24944b65f5c246c5b278db9d2398cb6a
Publikováno v:
Physical Review Research, Vol 2, Iss 1, p 012079 (2020)
Nowadays fiber biphoton sources are nearly as popular as crystal-based ones. They offer a single spatial mode and easy integrability into optical networks. However, fiber sources lack the broad tunability of crystals, which do not require a tunable p
Externí odkaz:
https://doaj.org/article/095b0f8a20714ba59f290ab122d83c72
Autor:
Riccardo Pennetta, Martin Blaha, Aisling Johnson, Daniel Lechner, Philipp Schneeweiss, Jürgen Volz, Arno Rauschenbeutel
Publikováno v:
Physical Review Letters. 128
We experimentally and theoretically investigate collective radiative effects in an ensemble of cold atoms coupled to a single-mode optical nanofiber. Our analysis unveils the microscopic dynamics of the system, showing that collective interactions be
Publikováno v:
ACS Photonics. 6:3315-3320
Controllable optically driven rotation of microscopic objects is desirable in many applications, but is difficult to achieve. Here we report a sustained self-starting orbital motion of a clamped el...
Autor:
Jiapeng Huang, Philip St. J. Russell, Zheqi Wang, J. R. Koehler, Shangran Xie, Xin Jiang, Fehim Babic, Riccardo Pennetta
Publikováno v:
ACS Photonics. 6:2942-2948
Arrays of elongated nanoscale structures with suitable optical and mechanical properties can act as probes of numerous physical processes at the nanoscale, with applications in, for example, high-r...
Autor:
Riccardo Pennetta, Daniel Lechner, Martin Blaha, Arno Rauschenbeutel, Philipp Schneeweiss, Jürgen Volz
We discuss the evolution of the quantum state of an ensemble of atoms that are coupled via a single propagating optical mode. We theoretically show that the quantum state of N atoms, which are initially prepared in the timed Dicke state, evolves thro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff35b0746cf48563df360f0eb9a004d8
Autor:
Nicolas Joly, P. St. J. Russell, Riccardo Pennetta, Jonas Hammer, Daniel R. Häupl, Maria V. Chekhova
Publikováno v:
OSA Advanced Photonics Congress (AP) 2020 (IPR, NP, NOMA, Networks, PVLED, PSC, SPPCom, SOF).
Four-wave mixing in Ar-filled sub-micron suspended-core fibres is used to generate spectrally tunable entangled photon pairs. A continuous shift of 0.30 THz/bar is measured for the generated sidebands with a coincidence-to-accidental ratio over 104.
Autor:
Daniel Lechner, Riccardo Pennetta, Martin Blaha, Philipp Schneeweiss, Jürgen Volz, Arno Rauschenbeutel
Publikováno v:
EPJ Web of Conferences. 266:11006
Cavity quantum electrodynamics (cavity QED) is conventionally described by the Jaynes- or Tavis-Cummings model, where quantum emitters couple to a single-mode cavity. The opposite scenario, in which an ensemble of emitters couples to a single spatial
Publikováno v:
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
Single-ring hollow-core photonic crystal fibre (SR-PCF), consisting of a ring of thin-walled glass capillaries surrounding a central hollow core, can offer remarkably low transmission loss [1], and is finding applications in, e.g., wavelength convers
Autor:
Philip St. J. Russell, Michael T. Enders, Francesco Tani, Michael H. Frosz, Riccardo Pennetta
Publikováno v:
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
Thermal tapering of step-index and photonic crystal fibres (PCF) has recently emerged as an effective tool for controlling nonlinear optical effects through offering axially varying dispersion and high effective nonlinearity [1,2]. At the same time,