Manipulating the momentum state of a condensate by sequences of standing-wave pulses

Xiong, Wei; Yue, Xuguang; Wang, Zhongkai; Zhou, Xiaoji; Chen, Xuzong

doi:10.1103/physreva.84.043616

Cited by 19 publications

(24 citation statements)

References 29 publications

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“…(9) (red dashed line). Results by exact diagonalization of the Hamiltonian (1) numerically [11] (for convenience we refer to this method as Num hereafter) (blue solid line) and RN approximation (black dash-dotted line) are shown together for comparison. As shown by Figs.…”

Section: B Diffraction Amplitude and Phase For An Atommentioning

confidence: 99%

“…During the interval, atoms in each momentum state evolve freely according to their kinetic energy, accumulating phases from 0 to 2π . As the phases change with the interval, the probability amplitudes of atoms in different momentum states interfere constructively and destructively periodically when combined by the second pulse [11,16].…”

Section: Effect Of the Diffraction Phases In The Tl Interferometermentioning

confidence: 99%

“…The studies of the KD scattering of atoms by light have been numerous, both in experiments [4][5][6][7][8][9][10][11][12][13] and in theories [14][15][16][17]. According to the intensity and duration of the atom-light interaction, it is usually divided into the Bragg, the Raman-Nath, and the channeling regimes [4].…”

Section: Introductionmentioning

confidence: 99%

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Observation of diffraction phases in matter-wave scattering

et al. 2013

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We study the diffraction phase of different orders via the Dyson expansion series, for ultracold atomic gases scattered by a standing-wave pulse. As these diffraction phases are not observable in a single-pulse scattering process, a temporal Talbot-Lau interferometer consisting of two standing-wave pulses is demonstrated experimentally with a Bose-Einstein condensate to explore this physical effect. The role of the diffraction phases is clearly shown by the second standing-wave pulse in the relative population of different momentum states. Our experiments demonstrate obvious effects beyond the Raman-Nath method, while they agree well with our theory by including the diffraction phases. In particular, the observed asymmetry in the dependence of the relative population on the interval between two standing-wave pulses reflects the diffraction phase differences. The role of interatomic interaction in the Talbot-Lau interferometer is also discussed.

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Section: B Diffraction Amplitude and Phase For An Atommentioning

confidence: 99%

Section: Effect Of the Diffraction Phases In The Tl Interferometermentioning

confidence: 99%

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Observation of diffraction phases in matter-wave scattering

et al. 2013

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“…Different to usual separation of the Kapitza-Dirac regime, the Bragg regime and the channeling regime (Keller et al, 1999), the scattering process is described by the projection of atomic states between the momentum presentation and Bloch states form by the scattering standing waves. According to this method, we are able to design and realize several specific high order momentum states for the atomic interferometry (Xiong et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Based on our previous experimental and theoretical work about the interaction between laser pulses and a BEC, in this chapter we mainly present methods of getting high order of momentum states by resonant superradiance ) and by multi-pulse Kapitza-Dirac scattering (Xiong et al, 2011), corresponding to travelling wave scattering and standing wave scattering, respectively.…”

Section: Introductionmentioning

confidence: 99%

High Order Momentum States by Light Wave Scattering

Zhou¹,

Yue²

2012

Interferometry - Research and Applications in Science and Technology

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Improved optical standing-wave beam splitters for dilute Bose–Einstein condensates

Cassidy

Boshier

Harrell

2021

Journal of Applied Physics

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Bose–Einstein condensate (BEC)-based atom interferometry exploits low temperatures and long coherence lengths to facilitate high-precision measurements. Progress in atom interferometry promises improvements in navigational devices like gyroscopes and accelerometers, as well as applications in fundamental physics such as accurate determination of physical constants. Previous work demonstrates that beam splitters and mirrors for coherent manipulation of dilute BEC momentum in atom interferometers can be implemented with sequences of non-resonant standing-wave light pulses. While previous work focuses on the optimization of the optical pulses’ amplitude and duration to produce high-order momentum states with high fidelity, we explore how varying the shape of the optical pulses affects optimal beam-splitter performance, as well as the effect of pulse shape on the sensitivity of optimized parameters in achieving high fidelity in high-momentum states. In simulations of two-pulse beam splitters utilizing optimized square, triangle, and sinc-squared pulse shapes applied to dilute BECs, we, in some cases, reduce parameter sensitivity by an order of magnitude while maintaining fidelity.

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Manipulating the momentum state of a condensate by sequences of standing-wave pulses

Cited by 19 publications

References 29 publications

Observation of diffraction phases in matter-wave scattering

Observation of diffraction phases in matter-wave scattering

High Order Momentum States by Light Wave Scattering

Improved optical standing-wave beam splitters for dilute Bose–Einstein condensates

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