Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Cere, Alessandro"'
Publikováno v:
Phys. Rev. Lett. 125, 183603 (2020)
We experimentally demonstrate a spectral compression scheme for heralded single photons with narrow spectral bandwidth around 795 nm, generated through four-wave mixing in a cloud of cold Rb-87 atoms. The scheme is based on an asymmetric cavity as a
Externí odkaz:
http://arxiv.org/abs/2001.00423
Autor:
Lee, Jianwei, Shen, Lijiong, Cerè, Alessandro, Troupe, James, Lamas-Linares, Antia, Kurtsiefer, Christian
Publikováno v:
Appl. Phys. Lett. 115, 141101 (2019)
We demonstrate an attack on a clock synchronization protocol that attempts to detect tampering of the synchronization channel using polarization-entangled photon pairs. The protocol relies on a symmetrical channel, where propagation delays do not dep
Externí odkaz:
http://arxiv.org/abs/1907.09661
Autor:
Lee, Jianwei, Shen, Lijiong, Cerè, Alessandro, Troupe, James, Lamas-Linares, Antia, Kurtsiefer, Christian
We demonstrate a point-to-point clock synchronization protocol based on bidirectionally exchanging photons produced in spontaneous parametric down conversion (SPDC). The technique exploits tight timing correlations between photon pairs to achieve a p
Externí odkaz:
http://arxiv.org/abs/1812.08450
Autor:
Seidler, Mathias A., Gutiérrez-Jáuregui, Ricardo, Cerè, Alessandro, Jáuregui, Rocío, Kurtsiefer, Christian
We present a method to estimate the time scale of quantum jumps from the time correlation of photon pairs generated from a cascade decay in an atomic system, and realize it experimentally in a cold cloud of 87Rb. Taking into account the photodetector
Externí odkaz:
http://arxiv.org/abs/1812.00129
Autor:
Lee, Jianwei, Shen, Lijiong, Cerè, Alessandro, Gerrits, Thomas, Lita, Adriana E., Nam, Sae Woo, Kurtsiefer, Christian
Publikováno v:
Rev. Sci. Instrum., 89, 123108 (2018)
Transition-edge sensors (TES) are photon-number resolving calorimetric spectrometers with near unit efficiency. Their recovery time, which is on the order of microseconds, limits the number resolving ability and timing accuracy in high photon-flux co
Externí odkaz:
http://arxiv.org/abs/1808.08830
Autor:
Cerè, Alessandro, Srivathsan, Bharath, Gulati, Gurpreet Kaur, Chng, Brenda, Kurtsiefer, Christian
Publikováno v:
Phys. Rev. A 98, 023835 (2018)
We characterize a source of photon pairs based on cascade decay in a cold Rb-87 ensemble. This source is particularly suited to generate of photons for interaction with Rb-87 based atomic systems. We experimentally investigate the dependence of pair
Externí odkaz:
http://arxiv.org/abs/1806.02079
Autor:
Shen, Lijiong, Lee, Jianwei, Thinh, Le Phuc, Bancal, Jean-Daniel, Cerè, Alessandro, Lamas-Linares, Antia, Lita, Adriana, Gerrits, Thomas, Nam, Sae Woo, Scarani, Valerio, Kurtsiefer, Christian
Publikováno v:
Phys. Rev. Lett. 121, 150402 (2018)
We present a violation of the CHSH inequality without the fair sampling assumption with a continuously pumped photon pair source combined with two high efficiency superconducting detectors. Due to the continuous nature of the source, the choice of th
Externí odkaz:
http://arxiv.org/abs/1805.02828
Autor:
Poh, Hou Shun, Cerè, Alessandro, Bancal, Jean-Daniel, Cai, Yu, Sangouard, Nicolas, Scarani, Valerio, Kurtsiefer, Christian
Publikováno v:
Phys. Rev. A 96, 022101 (2017)
Collective measurements on large quantum systems together with a majority voting strategy can lead to a violation of the CHSH Bell inequality. In presence of many entangled pairs, this violation decreases quickly with the number of pairs, and vanishe
Externí odkaz:
http://arxiv.org/abs/1704.00969
Autor:
Steiner, Matthias, Leong, Victor, Seidler, Mathias Alexander, Cerè, Alessandro, Kurtsiefer, Christian
Publikováno v:
Optics Express Vol. 25, Issue 6, pp. 6294-6301 (2017)
We investigate the scattering of single photons by single atoms and, in particular, the dependence of the atomic dynamics and the scattering probability on the photon bandwidth. We tightly focus the incident photons onto a single trapped~$^{87}${Rb}
Externí odkaz:
http://arxiv.org/abs/1701.07197
Autor:
Leong, Victor, Seidler, Mathias Alexander, Steiner, Matthias, Cerè, Alessandro, Kurtsiefer, Christian
Scattering of light by matter has been studied extensively in the past. Yet, the most fundamental process, the scattering of a single photon by a single atom, is largely unexplored [1-3]. One prominent prediction of quantum optics is the deterministi
Externí odkaz:
http://arxiv.org/abs/1604.08020