A theoretical analysis and determination of the technical requirements for a Bragg diffraction-based cold atom interferometry gravimeter

Hu, Qingqing; Yang, Jun; Luo, Yanhong; Jia, Aiai; Wei, Chunhua; Li, Zehuan

doi:10.1016/j.ijleo.2016.11.192

Cited by 5 publications

(6 citation statements)

References 14 publications

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“…Higher-order Bragg diffraction [1][2][3][4][5] in combination with sequential pulses [6,7] has become a standard tool for large-momentum-transfer (LMT) techniques to enhance the sensitivity of light-pulse atom interferometers [8,9]. However, with Raman diffraction [8,10,11], the other main mechanism, only sequential pulses [12][13][14] have routinely been employed so far.…”

Section: Introductionmentioning

confidence: 99%

Atomic Raman scattering: Third-order diffraction in a double geometry

et al. 2020

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In a retroreflective scheme with an atom initially at rest, atomic Raman diffraction adopts some of the properties of Bragg diffraction due to additional couplings to off-resonant momenta. As a consequence, double Raman diffraction has to be performed in a Bragg-type regime, where the pulse duration is sufficiently long to suppress diffraction into spurious orders. Taking advantage of this regime, double Raman allows for resonant higher-order diffraction. We study theoretically the case of third-order diffraction and compare it to first order as well as a sequence of first-order Raman pulses giving rise to the same momentum transfer as the third-order pulse. Moreover, we demonstrate that interferometry is possible, and we investigate amplitude and contrast of a third-order double Raman Mach-Zehnder interferometer. In fact, third-order diffraction constitutes a competitive tool for the diffraction of ultracold atoms and interferometry based on large momentum transfer since it allows one to reduce the complexity of the experiment as well as the total duration of the diffraction process compared to a sequence, at the cost of higher pulse intensities.

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Section: Introductionmentioning

confidence: 99%

Atomic Raman scattering: Third-order diffraction in a double geometry

et al. 2020

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“…Fig. 2(c) also demonstrates the inadequacy of a commonly used [17,[24][25][26] generalized Rabi frequency formula first derived in [16], given by the RHS of the inequality below:…”

Section: Inset)mentioning

confidence: 99%

Bloch-band picture for light-pulse atom diffraction and interferometry

et al. 2019

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We apply a Bloch-bands approach to the analysis of pulsed optical standing wave diffractive elements in optics and interferometry with ultracold atoms. We verify our method by comparison to a series of experiments with Bose-Einstein condensates. The approach provides accurate Rabi frequencies for diffraction pulses and is particularly useful for the analysis and control of diffraction phases, an important systematic effect in precision atom interferometry. Utilizing this picture, we also demonstrate a method to determine atomic band structure in an optical lattice through a measurement of phase shifts in an atomic contrast interferometer.

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“…KD effect continues to be a subject of active research and finds wide applications in areas such as matter-wave interferometers [28], general relativity [29][30][31][32], gravitational waves [33][34][35][36][37][38][39], determination of fine structure constant [40,41] including non-perturbative quantum dynamical systems [41]. It has been demonstrated recently that the KD effect on optical standing waves formed by the fundamental frequency and it's third harmonic can be used as an electron beam splitter [42].…”

Section: Introductionmentioning

confidence: 99%

Time evolution of charged particle wave functions in optical crystal: The coherent Kapitza-Dirac effect for plasma-based proton beams

Barman,

Bhattacharjee

2020

Preprint

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The stationary eigenstates and eigenvalues for the ponderomotive potential of an optical crystal confined in a one-dimensional infinite square well are numerically obtained. The initial states of the incoming particles taken as Gaussian, are expanded in the basis of the stationary eigenstates of the ponderomotive potential, to obtain the subsequent time evolution of the wave function of the particle during the interaction with the optical crystal. From the results of the time evolution of the probability density, it is observed that the particles get localized at equidistant positions in the transverse direction, which results in the diffraction pattern. The temporal evolution of the diffraction pattern is analyzed. As an application, the diffraction of proton beams is studied, where the experimental parameters are optimized to observe the diffraction pattern for a microwave plasma-based proton beam system. The observations are important for design of proton based matter-wave interferometers.

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A theoretical analysis and determination of the technical requirements for a Bragg diffraction-based cold atom interferometry gravimeter

Cited by 5 publications

References 14 publications

Atomic Raman scattering: Third-order diffraction in a double geometry

Atomic Raman scattering: Third-order diffraction in a double geometry

Bloch-band picture for light-pulse atom diffraction and interferometry

Time evolution of charged particle wave functions in optical crystal: The coherent Kapitza-Dirac effect for plasma-based proton beams

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