Enhancement of motional entanglement of cold atoms by pairwise scattering of photons

Guo, Rui; Zhou, Xiaoji; Chen, Xuzong

doi:10.1103/physreva.78.052107

Cited by 8 publications

(12 citation statements)

References 19 publications

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“…The macroscopic coherent properties of ultra-cold atoms (29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39) are conducive to precise measurement. To make full use of the advantages of ultra-cold atomic coherence properties, one method is to reduce the manipulation time and another is to suppress the attenuation of coherence.…”

Section: Enhanced Resolution By Increasing Coherent Timementioning

confidence: 99%

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: Enhanced Resolution By Increasing Coherent Timementioning

confidence: 99%

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

Dong,

Jin,

Shui

et al. 2021

Preprint

Self Cite

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show abstract

“…A series of experiments [4,5,6,7,8] have sparked related interests in phase-coherent amplification of matter waves [4,5], quantum information [6], collective scattering instability [7], and coherent imaging [8]. Several theoretical descriptions of these cooperative scattering in BEC with single-frequency pump have also been presented [9,10,11,12].…”

Section: Introductionmentioning

confidence: 99%

High-order momentum modes by resonant superradiant scattering

Zhou

Chen

2009

Phys. Rev. A

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The spatial and time evolutions of superradiant scattering are studied theoretically for a weak pump beam with different frequency components traveling along the long axis of an elongated Bose-Einstein condensate. Resulting from the analysis for mode competition between the different resonant channels and the local depletion of the spatial distribution in the superradiant Rayleigh scattering, a new method of getting a large number of high-order forward modes by resonant frequency components of the pump beam is provided, which is beneficial to a lager momentum transfer in atom manipulation for the atom interferometry and atomic optics.

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“…Several theoretical descriptions of these cooperative scattering in BEC with single-frequency pump have also been presented (Guo et al, 2008;Moore & Meystre, 1999;Pu et al, 2003;Zobay & Nikolopoulos, 2006).…”

Section: High-order Momentum Modes By Resonant Superradiant Scatteringmentioning

confidence: 99%

“…In the superradiant Rayleigh scattering (Bar-Gill et al, 2007;Guo et al, 2008;Inouye et al, 1999;Kozuma, Suzuki et al, 1999;Moore & Meystre, 1999;Pu et al, 2003;Sadler et al, 2007;Schneble et al, 2003;Slama et al, 2007;Zobay & Nikolopoulos, 2006), the spatial and time evolutions of superradiant scattering are studied for a weak pump beam with different frequency components traveling along the long axis of an elongated Bose-Einstein condensate. Through the analysis of the mode competition between the different resonant channels and the local depletion of the spatial distribution, we can get a large number of high-order forward modes by resonant frequency components of the pump beam ).…”

Section: Introductionmentioning

confidence: 99%