Zobrazeno 1 - 10
of 245
pro vyhledávání: '"A. Ourjoumtsev"'
Publikováno v:
Nature Photonics 17, 688-693 (2023)
Engineering quantum states of free-propagating light is of paramount importance for quantum technologies. Coherent states ubiquitous in classical and quantum communications, squeezed states used in quantum sensing, and even highly-entangled cluster s
Externí odkaz:
http://arxiv.org/abs/2209.02047
Publikováno v:
Phys. Rev. X 12, 021034 (2022)
We demonstrate a new versatile building block for optical quantum technologies, based on an intracavity Rydberg-blockaded atomic ensemble acting as a single two-level superatom. We coherently control its state and optically detect it in a single shot
Externí odkaz:
http://arxiv.org/abs/2111.09088
Publikováno v:
Phys. Rev. Applied 15, 064047 (2021)
We developed an ultra-compact high-resolution imaging system for cold atoms. Its only in-vacuum element is a multimode optical fiber with a diameter of $230\,\mu$m, which simultaneously collects light and guides it out of the vacuum chamber. External
Externí odkaz:
http://arxiv.org/abs/2012.09073
Autor:
Lvovsky, A. I., Grangier, Philippe, Ourjoumtsev, Alexei, Parigi, Valentina, Sasaki, Masahide, Tualle-Brouri, Rosa
This review covers recent theoretical and experimental efforts to extend the application of the continuous-variable quantum technology of light beyond "Gaussian" quantum states, such as coherent and squeezed states, into the domain of "non-Gaussian"
Externí odkaz:
http://arxiv.org/abs/2006.16985
Publikováno v:
Opt. Lett. 45, 1519-1522 (2020)
To manipulate cold atoms in spatially constrained quantum engineering platforms, we developed a lensless optical system with a $\sim$1 $\mu$m resolution and a transverse size of only 225 $\mu$m. We use a multimode optical fiber with a high numerical
Externí odkaz:
http://arxiv.org/abs/1912.00062
Publikováno v:
Phys. Rev. Lett. 117, 253602 (2016)
Electromagnetically induced transparency (EIT) in a ladder system involving a Rydberg level is known to yield giant optical nonlinearities for the probe field, even in the few-photon regime. This enhancement is due to the strong dipole-dipole interac
Externí odkaz:
http://arxiv.org/abs/1604.06385
Autor:
Boddeda, Rajiv, Usmani, Imam, Bimbard, Erwan, Grankin, Andrey, Ourjoumtsev, Alexei, Brion, Etienne, Grangier, Philippe
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 49 084005 (2016)
We experimentally characterize the optical nonlinear response of a cold atomic medium placed inside an optical cavity, and excited to Rydberg states. The excitation to S and D Rydberg levels is carried out via a two-photon transition in an EIT (elect
Externí odkaz:
http://arxiv.org/abs/1512.08480
Autor:
Das, Sumanta, Grankin, Andrey, Iakoupov, Ivan, Brion, Etienne, Borregaard, Johannes, Boddeda, Rajiv, Usmani, Imam, Ourjoumtsev, Alexei, Grangier, Philippe, Sørensen, Anders S.
Publikováno v:
Phys. Rev. A 93, 040303 (2016)
We propose a novel scheme for high fidelity photonic controlled phase gates using Rydberg blockade in an ensemble of atoms in an optical cavity. The gate operation is obtained by first storing a photonic pulse in the ensemble and then scattering a se
Externí odkaz:
http://arxiv.org/abs/1506.04300
Publikováno v:
Phys. Rev. A 92, 043841 (2015)
In this article, we theoretically study the quantum statistical properties of the light transmitted through or reflected from an optical cavity, filled by an atomic medium with strong optical non-linearity induced by Rydberg-Rydberg van der Waals int
Externí odkaz:
http://arxiv.org/abs/1502.06429
Publikováno v:
New J. Phys. 16 043020 (2014)
We theoretically investigate the quantum statistical properties of light transmitted through an atomic medium with strong optical non-linearity induced by Rydberg-Rydberg van der Waals interactions. In our setup, atoms are located in a cavity and non
Externí odkaz:
http://arxiv.org/abs/1312.2621