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Volumn 80, Issue 6, 2009, Pages

Tomography of correlation functions for ultracold atoms via time-of-flight images

Author keywords

[No Author keywords available]

Indexed keywords

CORRELATION FUNCTION; DENSITY DISTRIBUTIONS; QUANTITATIVE LEVEL; QUASI-ONE-DIMENSIONAL TRAPS; SINGLE-PARTICLE CORRELATION; SPACE CORRELATION; SPATIAL RESOLUTION; TIME OF FLIGHT; ULTRACOLD ATOMS;

EID: 71549155930     PISSN: 10502947     EISSN: 10941622     Source Type: Journal    
DOI: 10.1103/PhysRevA.80.063614     Document Type: Article
Times cited : (5)

References (17)
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    • For a Bose system with Bose-Einstein condensation, the interatomic interaction can have nontrivial effect on the time-of-flight images and cause a broadening of the condensate peak. In such a case, since the condensate and thermal parts can be separated in the images through a bimodal fit, this interaction effect can be addressed by numerically evolving the time-dependent Gross-Pitaevskii equation for the condensate, while leaving the momentum correlation of the thermal part almost unchanged. See, e.g., 10.1103/PhysRevA.77.043626
    • For a Bose system with Bose-Einstein condensation, the interatomic interaction can have nontrivial effect on the time-of-flight images and cause a broadening of the condensate peak. In such a case, since the condensate and thermal parts can be separated in the images through a bimodal fit, this interaction effect can be addressed by numerically evolving the time-dependent Gross-Pitaevskii equation for the condensate, while leaving the momentum correlation of the thermal part almost unchanged. See, e.g., G.-D. Lin, W. Zhang, and L.-M. Duan, Phys. Rev. A 77, 043626 (2008). 10.1103/PhysRevA.77. 043626
    • (2008) Phys. Rev. A , vol.77 , pp. 043626
    • Lin, G.-D.1    Zhang, W.2    Duan, L.-M.3
  • 11
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    • What one measures in experiments is the atomic density integrated along the imaging direction. However, for the quasi-one-dimensional case or the 3D case with spherical symmetry as discussed in this paper, one can reconstruct the density profile from its column integration. See 10.1103/PhysRevLett.97.030401
    • What one measures in experiments is the atomic density integrated along the imaging direction. However, for the quasi-one-dimensional case or the 3D case with spherical symmetry as discussed in this paper, one can reconstruct the density profile from its column integration. See Y. Shin, M. W. Zwierlein, C. H. Schunck, A. Schirotzek, and W. Ketterle, Phys. Rev. Lett. 97, 030401 (2006). 10.1103/PhysRevLett.97.030401
    • (2006) Phys. Rev. Lett. , vol.97 , pp. 030401
    • Shin, Y.1    Zwierlein, M.W.2    Schunck, C.H.3    Schirotzek, A.4    Ketterle, W.5
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    • For 2D Bose gases, time-reversal symmetry can be spontaneously broken by creating vortex-antivortex pairs below the Berezinskii-Kosterlitz-Thouless (BKT) transition temperature. However, since the excitation energy increases logarithmically with the vortex pair size, for temperature not too close to the transition temperature, vortex pairs are tightly combined and we can resume a time-reversal symmetry for the coarse-grained wave function.
    • For 2D Bose gases, time-reversal symmetry can be spontaneously broken by creating vortex-antivortex pairs below the Berezinskii-Kosterlitz-Thouless (BKT) transition temperature. However, since the excitation energy increases logarithmically with the vortex pair size, for temperature not too close to the transition temperature, vortex pairs are tightly combined and we can resume a time-reversal symmetry for the coarse-grained wave function.
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    • Luxat, D.L.1    Griffin, A.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.