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Context. Fast Radio Burst 20180916B is a repeating FRB whose activity window has a 16.34 day periodicity that also shifts and varies in duration with the observing frequency. Recently, arxiv:2205.09221 reported the FRB has started to show…

高能天体物理现象 · 物理学 2025-02-05 S. Bethapudi , L. G. Spitler , D. Z. Li , V. R. Marthi , M. Bause , R. A. Main , R. S. Wharton

We present a new dataset of "free roaming" (FR) and "targeted roaming" (TR): a pool of 41 participants is asked to walk around a university campus (FR) or is asked to find a particular room within a library (TR). Eye movements are recorded…

机器学习 · 计算机科学 2024-03-15 Rishabh Vallabh Varsha Haria , Amin El Abed , Sebastian Maneth

We demonstrate a light-pulse atom interferometer based on the diffraction of free-falling atoms by a picosecond frequency-comb laser. More specifically, we coherently split and recombine wave packets of cold $^{87}$Rb atoms by driving…

原子物理 · 物理学 2022-10-25 Cyrille Solaro , Clément Debavelaere , Pierre Cladé , Saïda Guellati-Khelifa

To investigate whether apparently non-repeating Fast Radio Bursts (FRBs) are truly one-off transients, we conducted systematic follow-up observations of 27 out of 81 non-repeating FRBs identified in the Parkes Transient Database. Using 59.0…

高能天体物理现象 · 物理学 2025-12-02 Xuan Yang , Songbo Zhang , Xuefeng Wu

Optical trapping of selected species of radioactive atoms has great potential in precision measurements for testing fundamental physics such as EDM, PNC and parity violating beta-decay asymmetry correlation coefficients. We report trapping…

量子物理 · 物理学 2009-11-13 D. Feldbaum , H. Wang , J. Weinstein , D. Vieira , X. Zhao

Out-of-time-order correlation functions provide a proxy for diagnosing chaos in quantum systems. We propose and analyze an interferometric scheme for their measurement, using only local quantum control and no reverse time evolution. Our…

We have investigated the ultracold interspecies scattering properties of metastable triplet He and Rb. We performed state-of-the-art ab initio calculations of the relevant interaction potential, and measured the interspecies elastic cross…

Energy and time entangled photons at a wavelength of 1310 nm are produced by parametric downconversion in a KNbO3 crystal and are sent into all-fiber interferometers using a telecom fiber network. The two interferometers of this…

量子物理 · 物理学 2009-10-30 W. Tittel , J. Brendel , B. Gisin , T. Herzog , H. Zbinden , N. Gisin

We explore the uses of ultracold molecules as a platform for future experiments in the field of quantum simulation, focusing on two molecular species, $^{40}$Ca$^{19}$F and $^{87}$Rb$^{133}$Cs. We report the development of coherent quantum…

Detecting fast radio bursts (FRBs) with frequency-dependent intensity remains a challenge, as existing search algorithms do not account for the spectral shape, potentially leading to non-detections. We propose a novel detection statistic,…

高能天体物理现象 · 物理学 2023-12-11 Pravir Kumar , Barak Zackay , Casey J. Law

Fast Radio Bursts (FRBs) are extra-galactic radio transients which exhibit a distance-dependent dispersion of their signal, and thus can be used as cosmological probes. In this article we, for the first time, apply a model-independent…

宇宙学与河外天体物理 · 物理学 2022-07-21 Stefan Heimersheim , Nina S. Sartorio , Anastasia Fialkov , Duncan R. Lorimer

We present a general solution for the radiation intensity in front of a purely absorbing slab moving toward an observer at constant speed and with a constant temperature. The solution is obtained by integrating the lab-frame radiation…

计算工程、金融与科学 · 计算机科学 2020-09-07 Ryan G. McClarren , N. A. Gentile

In this paper, we consider interaction-free measurement (IFM) with imperfect interaction. In the IFM proposed by Kwiat et al., we assume that interaction between an absorbing object and a probe photon is imperfect, so that the photon is…

量子物理 · 物理学 2007-05-23 Hiroo Azuma

This paper investigates achieving diverse K-factors using a Reverberation Chamber (RC) with a Compact Antenna Test Range (CATR) system. It explores six hybrid "RC plus CATR" configurations involving different excitations of the Rich…

系统与控制 · 电气工程与系统科学 2024-05-24 Alejandro Antón Ruiz , Samar Hosseinzadegan , John Kvarnstrand , Klas Arvidsson , Andrés Alayón Glazunov

Precision measurements are reported of the cross-spectrum of rotationally-induced differential position displacements in a pair of colocated 39 m long, high power Michelson interferometers. One arm of each interferometer is bent…

Intermodal quantum key distribution at telecom wavelengths provides a hybrid interface between fiber connections and free-space links, both essential for the realization of scalable and interoperable quantum networks. Although demonstrated…

We consider photonic tunnelling through evanescent regions and obtain general analytic expressions for the transit (phase) time $\tau$ (in the opaque barrier limit) in order to study the recently proposed ``universality'' property according…

光学 · 物理学 2008-12-18 S. Esposito

The quantum efficiency of an electroluminescent intersubband emitter based on InAs/AlSb has been measured as a function of the magnetic field up to 20T. Two series of oscillations periodic in 1/B are observed, corresponding to the elastic…

介观与纳米尺度物理 · 物理学 2015-01-29 C. Faugeras , A. Wade , A. Leuliet , A. Vasanelli , C. Sirtori , G. Fedorov , D. Smirnov , R. Teissier , A. Baranov , D. Barate , J. Devenson

We demonstrate an interference method to determine the low-energy elastic scattering amplitudes of a quantum gas. We linearly accelerate two ultracold atomic clouds up to energies of 1.2 mK and observe the collision halo by direct imaging…

量子气体 · 物理学 2013-11-26 Ch. Buggle , J. Léonard , W. von Klitzing , J. T. M. Walraven

The assumption of free will - the ability of an experimentalist to make random choices - is central to proving the indeterminism of quantum resources, the primary tool in quantum cryptography. Relaxing the assumption in a Bell test allows…

量子物理 · 物理学 2013-12-30 James E. Pope , Alastair Kay