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Wavefront aberrations are one of the largest uncertainty factors in present atom interferometers. We present a detailed numerical and experimental analysis of this effect based on measured aberrations from optical windows. By placing…

原子物理 · 物理学 2015-06-16 Vladimir Schkolnik , Bastian Leykauf , Matthias Hauth , Christian Freier , Achim Peters

Spin-polarization effects of an ultrarelativistic electron beam head-on colliding with an ultraintense two-color laser pulse are investigated comprehensively in the quantum radiation-dominated regime. We employ a Monte Carlo method, derived…

等离子体物理 · 物理学 2019-09-18 Huai-Hang Song , Wei-Min Wang , Jian-Xing Li , Yan-Fei Li , Yu-Tong Li

We propose an experiment to search for a permanent atomic electric-dipole moment (EDM) using laser-cooled $^{171}$Yb atoms launched in an atomic fountain. A uniform B field sets the quantization axis, and the Ramsey…

原子物理 · 物理学 2007-05-23 Vasant Natarajan

Recent novel mesoscopic two-arm experiments involving quantum dots, electron interferometry and Aharononov-Bohm effects have enabled measuring the electron transmission probabilities and the phases. Unexpected features in the phases as…

介观与纳米尺度物理 · 物理学 2009-11-10 R. Englman , A. Yahalom

Recently, there has been a revival of interest in mechanisms for changing the spin polarization of an electron beam on transmission through, or reflection from, a magnetic surface. An understanding of these mechanisms would allow the use of…

凝聚态物理 · 物理学 2016-08-31 D. C. Hatton , J. A. C. Bland

Scaling of the anomalous Hall conductivity to longitudinal conductivity, has been observed in the dirty regime of two-dimensional weak and strong localization regions in ultrathin, polycrystalline, chemically disordered, ferromagnetic FePt…

材料科学 · 物理学 2015-06-11 Y. M. Lu , J. W. Cai , Zaibing Guo , X. X. Zhang

Photoirradiation effects in correlated electrons coupled with localized spins are studied based on the extended double-exchange model. In particular, we examine melting of an antiferromagnetic (AFM) charge order insulating state by varying…

强关联电子 · 物理学 2020-05-20 Jun Ohara , Yu Kanamori , Sumio Ishihara

We present a theoretical study of the spectra produced by optical-radio-frequency double resonance devices, in which resonant linearly polarized light is used in the optical pumping and detection processes. We extend previous work by…

原子物理 · 物理学 2007-05-23 Antoine Weis , Georg Bison , Anatoly S. Pazgalev

Objective: Variation of forearm orientation is one of the crucial factors that drastically degrades the forearm orientation invariant hand gesture recognition performance or the degree of freedom and limits the successful commercialization…

An economic technique for calculation of polarized bremsstrahlung process is proposed, assuming typical atomic momentum transfer $q\ll m$. The adopted approach is based on the natural reduction of the matrix element to the form…

高能物理 - 唯象学 · 物理学 2008-06-23 Miccola V. Bondarenco

Precision experiments in the parity violating electron scattering (PVES) sector is one the leading methods to probe physics beyond the standard model (SM). A large part of the physics program being envisioned for future facilities such as…

加速器物理 · 物理学 2018-10-12 Prajwal Mohanmurthy , Dipangkar Dutta

Supplementing our STM and electron emission studies investigations, concluding in electron pairing in strong laser fields [1], further time-of-flight electron emission studies were carried out, changing the angle of polarization of the…

光学 · 物理学 2015-06-02 N. Kroó , P. Rácz , S. Varró

A mesoscopic spin valve is used to determine the effective spin polarization of electrons tunneling from and into ferromagnetic transition metals at finite voltages. The tunneling spin polarization from the ferromagnet (FM) slowly decreases…

介观与纳米尺度物理 · 物理学 2007-05-23 S. O. Valenzuela , D. J. Monsma , C. M. Marcus , V. Narayanamurti , M. Tinkham

A wide range of nucleon and nuclear structure experiments in Jefferson Lab's Hall A require precise, continuous measurements of the polarization of the electron beam. In our Compton polarimeter, electrons are scattered off photons in a…

仪器与探测器 · 物理学 2011-09-29 D. Parno , M. Friend , F. Benmokhtar , G. Franklin , R. Michaels , S. Nanda , B. Quinn , P. Souder

We investigate how the polarization correlations of entangled photons described by wave packets are modified when measured by moving detectors. For this purpose, we analyze the Clauser-Horne-Shimony-Holt Bell inequality as a function of the…

量子物理 · 物理学 2012-08-09 Andre G. S. Landulfo , George E. A. Matsas , Adriano C. Torres

We study an impurity atom in a two-dimensional Fermi gas using variational wave functions for (i) an impurity dressed by particle-hole excitations (polaron) and (ii) a dimer consisting of the impurity and a majority atom. In contrast to…

量子气体 · 物理学 2011-02-22 Sascha Zöllner , G. M. Bruun , C. J. Pethick

We investigate the consequences of applying electric fields perpendicularly to thin films of topological semimetals. In particular, we consider Weyl and Dirac semimetals in a configuration such that their surface Fermi arcs lie on opposite…

介观与纳米尺度物理 · 物理学 2019-10-18 Yuriko Baba , Álvaro Díaz-Fernández , Elena Díaz , Francisco Domínguez-Adame , Rafael A. Molina

Rotations play a detrimental role in achieving ultra-high-performance inertial measurements with an atom interferometer, leading potentially to a total loss of interference contrast and the emergence of dominant phase shift biases. This…

The observation of coherent quantum transport phenomena in metals and semiconductors is limited by the eventual loss of phase coherence of the conducting electrons. We use the weak localization effect to measure the low-temperature…

介观与纳米尺度物理 · 物理学 2010-08-27 M. Eshkol , E. Eisenberg , M. Karpovski , A. Palevski

We report on the experimental demonstration of a horizontal accelerometer based on atom interferometry using counterpropagative Raman transitions between the states $F=1,m_F=\mp1$ and $F=2,m_F=\pm1$ of $^{87}$Rb. Compared to the $F=1,m_F=0…