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Long-time atom interferometry is instrumental to various high-precision measurements of fundamental physical properties, including tests of the equivalence principle. Due to rotations and gravity gradients, the classical trajectories…

Atomic Physics · Physics 2015-07-13 Albert Roura , Wolfgang Zeller , Wolfgang P. Schleich

We compare expressions for the atom interferometer phase obtained using the path integral approach and the approach based on the density matrix equation in the Wigner representation. The power series of these expressions over the Planck…

Atomic Physics · Physics 2017-02-01 B. Dubetsky

It is proposed to use rectangular Raman pulses for the technique of sequantial large momentum transfer. It is shown that the small parameters that make it possible to use this technology for precision atom interferometry can be 40--200…

Atomic Physics · Physics 2023-12-19 B. Dubetsky

Each natural mode of the electromagnetic field within a parabolic mirror exhibits spatial localization and polarization properties that can be exploited for the quantum control of its interaction with atomic systems. The region of…

Quantum Physics · Physics 2020-09-22 R. Gutierrez-Jauregui , R. Jauregui

Gauge theory requires physical observables to be gauge-independent. However, ever since Lamb noticed the problem of gauge selection in calculating atomic spontaneous radiation spectrum, the problem of gauge dependence was encountered in…

Atomic Physics · Physics 2023-09-14 Xue-Nan Chen , Yu-Hang Luo , Xiang-Song Chen

We adapt a typical Ramsey interferometer by inserting a linear accelerator capable of accelerating an atom inside a single-mode cavity. We demonstrate that this simple scheme allows us to estimate the effects of acceleration radiation via…

Quantum Physics · Physics 2020-08-10 Helder A. S. Costa , Irismar G. da Paz , Paulo R. S. Carvalho , Marcos Sampaio

Atoms can spontaneously form spatially-ordered structures in optical resonators when they are transversally driven by lasers. This occurs when the laser intensity exceeds a threshold value and results from the mechanical forces on the atoms…

Quantum Physics · Physics 2014-11-19 Stefan Schütz , Giovanna Morigi

An imaging interferometer was created in a two-dimensional electron gas by reflecting electron waves emitted from a quantum point contact (QPC) with a circular mirror. Images of electron flow obtained with a scanning probe microscope at…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 B. J. LeRoy , A. C. Bleszynski , K. E. Aidala , R. M. Westervelt , A. Kalben , E. J. Heller , S. E. J. Shaw , K. D. Maranowski , A. C. Gossard

We study the collective spontaneous emission of three identical two-level atoms initially prepared in the excited states by measuring Glauber's third-order photon correlation function. Assuming two atoms at sub-wavelength distance from each…

Quantum Physics · Physics 2022-04-06 Manuel Bojer , Lukas Götzendörfer , Romain Bachelard , Joachim von Zanthier

Guided-wave atom interferometers measure interference effects using atoms held in a confining potential. In one common implementation, the confinement is primarily two-dimensional, and the atoms move along the nearly free dimension under…

Atomic Physics · Physics 2009-11-13 J. H. T. Burke , B. Deissler , K. J. Hughes , C. A. Sackett

In 1995, Chapman et al. (1995 Phys. Rev. Lett. 75 2783) showed experimentally that the interference contrast in a three-grating atom interferometer does not vanish under the presence of scattering events with photons, as required by the…

Quantum Physics · Physics 2010-03-03 D. Arsenovic , M. Bozic , A. S. Sanz , M. Davidovic

A number of physical processes show some form of bifurcation or periodic splintering of a single distribution into two new ones. Recently, it has been noted that cavity searches for interactions between photons and exotic fields may also…

Instrumentation and Methods for Astrophysics · Physics 2013-07-09 C. Scarlett

In this work, we develop a probabilistic estimator for the voltage-to-current map arising in electrical impedance tomography. This novel so-called partially reflecting random walk on spheres estimator enables Monte Carlo methods to compute…

Numerical Analysis · Mathematics 2015-02-17 Sylvain Maire , Martin Simon

In the first version of this paper (arXiv: 1003.2899v1, 15.03.2010) there is described first, traditional method of measuring the non-zero shift of interference fringe in the Michelson interferometer, operating on the effects of second…

Quantum Physics · Physics 2010-04-20 V. V. Demjanov

Semi-transparent mirrors are standard elements in light optics for splitting light beams or creating two versions of the same image. Such mirrors do not exist in electron optics, although they could be beneficial in existing techniques such…

Quantum Physics · Physics 2018-10-24 Yujia Yang , Chung-Soo Kim , Richard G. Hobbs , Pieter Kruit , Karl K. Berggren

The efficiency of an atomic interferometer in proximity of a surface is discussed. We first study which is the best choice of frequency for a pulse acting on internal atomic transitions in the same well. Then considering the modification of…

Quantum Physics · Physics 2013-10-18 Sophie Pelisson , Riccardo Messina , Marie-Christine Angonin , Peter Wolf

The computation of the phase shift in a symmetric atom interferometer in the presence of a gravitational field is reviewed. The difference of action-phase integrals between the two paths of the interferometer is zero for any Lagrangian…

General Relativity and Quantum Cosmology · Physics 2014-09-16 Peter Wolf , Luc Blanchet , Christian J. Bordé , Serge Reynaud , Christophe Salomon , Clande Cohen-Tannoudji

We study the effect of quantum motion in a Mach-Zehnder interferometer where ultracold, two-level atoms cross a $\pi/2 $-$\pi $-$\pi/2$ configuration of separated, laser illuminated regions. Explicit and exact expressions are obtained for…

Quantum Physics · Physics 2009-11-13 I. Lizuain , S. V. Mousavi , D. Seidel , J. G. Muga

The density matrix equations of motion in near-degenerate three-level V-type closed-loop atomic system are calculated numerically in Floquet frame. The dynamical behavior of atom- photon entanglement between the dressed atom and its…

Atomic and Molecular Clusters · Physics 2015-07-01 Zeinab Kordi , Saeed Ghanbari , Mohammad Mahmoudi

We study fluctuations in plasmonic electroluminescence at the single-atom limit profiting from the precision of a low-temperature scanning tunneling microscope. First, we investigate the influence of a controlled single-atom transfer on the…

Mesoscale and Nanoscale Physics · Physics 2021-09-23 Anna Rosławska , Pablo Merino , Abhishek Grewal , Christopher C. Leon , Klaus Kuhnke , Klaus Kern