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The QUIJOTE Experiment was developed to study the polarization in the Cosmic Microwave Background (CMB) over the frequency range of 10-50 GHz. Its first instrument, the Multi Frequency Instrument (MFI), measures in the range 10-20 GHz which…

Instrumentation and Methods for Astrophysics · Physics 2019-10-24 Javier De Miguel-Hernández , Roger J. Hoyland , María F. Gómez Reñasco , J. Alberto Rubiño-Martín , Teodora A. Viera-Curbelo

We develop a multimode theory of direct homodyne measurements of quantum optical quasidistribution functions. We demonstrate that unbalanced homodyning with appropriately shaped auxiliary coherent fields allows one to sample point-by-point…

Quantum Physics · Physics 2009-11-07 Konrad Banaszek , Andrzej Dragan , Krzysztof Wodkiewicz , Czeslaw Radzewicz

Multiple-breath-washout (MBW) measurements are regarded as a sensitive technique which can reflect the ventilation inhomogeneity of respiratory airways. Typically nitrogen is used as the tracer gas and is washed out by pure oxygen in…

Medical Physics · Physics 2011-11-28 Jau-Yi Wang , Matt Suddards , John Owers-Bradley , Chris Mellor

We study in detail a system of two interferometers aimed to the detection of extremely faint phase-fluctuations. This system can represent a breakthrough for detecting a faint correlated signal that would remain otherwise undetectable even…

Quantum Physics · Physics 2015-11-18 I. Ruo Berchera , I. P. Degiovanni , S. Olivares , N. Samantaray , P. Traina , M. Genovese

A broadband multidimensional variational measurement allows overcoming the Standard Quantum Limit (SQL) of a classical mechanical force detection for a mechanical oscillator. In this measurement quantum back action, which perturbs the…

Multi-wavelength (MW) observations of Fast Radio Bursts (FRBs) is a key avenue to uncover the yet-unknown origin(s) of these extragalactic signals. In this proceeding, we discuss the need for precise localization to conduct MW studies. We…

High Energy Astrophysical Phenomena · Physics 2023-11-07 Cherry Ng

Heterogeneous Networks (HetNets) are known to enhance the bandwidth efficiency and throughput of wireless networks by more effectively utilizing the network resources. However, the higher density of users and access points in HetNets…

Networking and Internet Architecture · Computer Science 2016-11-15 Hani Mehrpouyan , Michail Matthaiou , Rui Wang , George K. Karagiannidis , Yingbo Hua

The paper deals with minimax optimal statistical tests for two composite hypotheses, where each hypothesis is defined by a non-parametric uncertainty set of feasible distributions. It is shown that for every pair of uncertainty sets of the…

Statistics Theory · Mathematics 2018-04-17 Michael Fauss , Abdelhak M. Zoubir , H. Vincent Poor

Estimation of the high-dimensional banded covariance matrix is widely used in multivariate statistical analysis. To ensure the validity of estimation, we aim to test the hypothesis that the covariance matrix is banded with a certain…

Methodology · Statistics 2022-04-26 Xiaoyi Wang , Gongjun Xu , Shurong Zheng

The on-chip broadband optical spectrometers which cover the entire tissue transparency window ({\lambda}=650-1050 nm) with high resolution are highly demanded for the miniaturized bio-sensing and bio-imaging applications. Here, we propose a…

Optics · Physics 2021-12-15 Kyoung Min Yoo , Ray T. Chen

Conventional full-waveform inversion (FWI) using the least-squares norm ($L^2$) as a misfit function is known to suffer from cycle skipping. This increases the risk of computing a local rather than the global minimum of the misfit. In our…

Geophysics · Physics 2017-05-12 Yunan Yang , Björn Engquist , Junzhe Sun , Brittany D. Froese

Covariate shifts are a common problem in predictive modeling on real-world problems. This paper proposes addressing the covariate shift problem by minimizing Maximum Mean Discrepancy (MMD) statistics between the training and test sets in…

Machine Learning · Computer Science 2022-03-03 Liwen Ouyang , Aaron Key

The kernel two-sample test based on the maximum mean discrepancy (MMD) is one of the most popular methods for detecting differences between two distributions over general metric spaces. In this paper we propose a method to boost the power…

Methodology · Statistics 2024-09-06 Anirban Chatterjee , Bhaswar B. Bhattacharya

We introduce a novel stochastic model for charge noise in superconducting charge qubits based on memory multi-fractional Brownian motion (mmfBm), capable of capturing non-stationary and long-memory effects. This framework reproduces key…

Quantum Physics · Physics 2025-07-29 Mahboob Ul Haq

In this paper, a new and convenient $\chi^2$ wald test based on MCMC outputs is proposed for hypothesis testing. The new statistic can be explained as MCMC version of Wald test and has several important advantages that make it very…

Econometrics · Economics 2018-01-04 Yong Li , Xiaobin Liu , Jun Yu , Tao Zeng

We present wideband microwave measurements (1-22 GHz) taken on Superconductor/Ferromagnet heterostructures with the Corbino disk technique. We apply the technique to Nb/PdNi/Nb trilayers in the vortex state and we compare the results to…

Superconductivity · Physics 2011-01-21 E. Silva , N. Pompeo , S. Sarti

A wavelet transform spectrum analyzer operating in real time within the frequency range 3X10^(-5) - 1.3X10^5 Hz has been implemented on a low-cost Digital Signal Processing board operating at 150MHz. The wavelet decomposition of the signal…

Statistical Mechanics · Physics 2009-11-07 Doriano Brogioli , Alberto Vailati

Near-field microwave microscopy has created the opportunity for a new class of electrodynamics experiments of materials. Freed from the constraints of traditional microwave optics, experiments can be carried out at high spatial resolution…

Materials Science · Physics 2007-05-23 Steven M. Anlage , D. E. Steinhauer , B. J. Feenstra , C. P. Vlahacos , F. C. Wellstood

The minimum variability timescale (MVT) is a key observable used to probe the central engines of Gamma-Ray Bursts (GRBs) by constraining the emission region size and the outflow Lorentz factor. However, its interpretation is often…

High Energy Astrophysical Phenomena · Physics 2026-02-13 S. Bala , P. Veres , A. Goldstein , R. Sonawane , R. Samanta , S. Iyyani

The millimeter wave (mmW) frequency spectrum has been explored recently for large bandwidth communication. At these frequencies, narrow directional beams are required for communication since the signal attenuation is high due to atmospheric…

Signal Processing · Electrical Eng. & Systems 2026-03-10 Jeet Tekchandani , Jai Mangal , Sumit J. Darak , Shobha Sundar Ram