Bragg diffraction of a matter wave driven by a pulsed nonuniform magnetic field

Zhai, Yueyang; Zhang, Peng; Chen, Xuzong; Dong, Guangjiong; Zhou, Xianju

doi:10.1103/physreva.88.053629

Cited by 6 publications

(4 citation statements)

References 55 publications

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“…In addition, the idea can be extended to the case of two-or three-dimensional OLs. This method has been verified by experiments many times and is very consistent with the theoretical analysis (27,28,42,(44)(45)(46)(47)(48).…”

Section: Shortcut Manipulating Ultra-cold Atomssupporting

confidence: 81%

Study to improve the performance of interferometer with ultra-cold atoms

Dong,

Jin,

Shui

et al. 2021

Preprint

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Ultra-cold atoms provide ideal platforms for interferometry. The macroscopic matter-wave property of ultra-cold atoms leads to large coherent length and long coherent time, which enable high accuracy and sensitivity to measurement. Here, we review our efforts to improve the performance of the interferometer. We demonstrate a shortcut method for manipulating ultra-cold atoms in an optical lattice. Compared with traditional ones, this shortcut method can reduce manipulation time by up to three orders of magnitude. We construct a matter-wave Ramsey interferometer for trapped motional quantum states and significantly increase its coherence time by one order of magnitude with an echo technique based on this method. Efforts have also been made to enhance the resolution by multimode scheme. Application of a noise-resilient multi-component interferometer shows that increasing the number of paths could sharpen the peaks in the time-domain interference fringes, which leads to a resolution nearly twice compared with that of a conventional double-path two-mode interferometer. With the shortcut method mentioned above, im-1

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Section: Shortcut Manipulating Ultra-cold Atomssupporting

confidence: 81%

Study to improve the performance of interferometer with ultra-cold atoms

Dong,

Jin,

Shui

et al. 2021

Preprint

Self Cite

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“…In fact the probability for atoms to be excited to higher momentum states by the pulse is proportional to the lattice depth. For a very deep lattice the atoms can easily obtain higher momenta [42]. In Fig.…”

Section: An Echo-ramsey Interferometer With Motional States Of Atomsmentioning

confidence: 97%

Ramsey interferometry with trapped motional quantum states

et al. 2018

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Ramsey interferometers (RIs) using internal electronic or nuclear states find wide applications in science and engineering. We develop a matter wave Ramsey interferometer for motional quantum states exploiting the S-and D-bands of an optical lattice and identify the different de-phasing and de-coherence mechanisms. We implement a band echo technique, employing repeated π-pulses. This suppresses the de-phasing evolution and significantly increase the coherence time of the motional state interferometer by one order of magnitude. We identify thermal fluctuations as the main mechanism for the remaining decay contrast. Our demonstration of an echo-Ramsey interferometer with motional quantum states in an optical lattice has potential application in the study of quantum many body lattice dynamics, and motional qubits manipulation.

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“…In the subsequent experiment, we accelerated atomic gases within 400 ms to reach to a velocity of 0.32hk and observed a magneto-optical diffraction of ultra-cold atom. [16] In that case, this method can be taken as an effective and convenient tool for moving BEC into the QUIC trap.…”

Section: Discussionmentioning

confidence: 99%

An effective method of accelerating Bose gases using magnetic coils

Lu¹,

Zhai²,

Pan³

et al. 2014

Chinese Phys. B

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Based on the experimental device which is a non-uniform magnetic field to trap an atom, we show how to obtain a certain velocity of a Bose gas by controlling the magnetic coils. By comparing the relationship of different current supply and delay time versus the ultimate velocity of the atom,we theoretically predict the method of accelerating the gases to an expected velocity. This method is of great convenience and significance for the applications in cold atom physics and precision measurements.

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Bragg diffraction of a matter wave driven by a pulsed nonuniform magnetic field

Cited by 6 publications

References 55 publications

Study to improve the performance of interferometer with ultra-cold atoms

Study to improve the performance of interferometer with ultra-cold atoms

Ramsey interferometry with trapped motional quantum states

An effective method of accelerating Bose gases using magnetic coils

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