Abstract
Localization of the three-level Λ-type atomic system interacting with two orthogonal standing-wave fields is proposed. Two equal and tunable peaks in the 2D plane are obtained by the detunings corresponding to the two orthogonal standing-wave fields when the decreasing intensities of spontaneously generated coherence (SGC) arise in the three-level Λ-type atomic system, while one circular ring with shrinking radii in the 2D plane is obtained by the adjusted phases and wave vectors of the standing-wave fields when the increasing intensities of SGC occur in the three-level Λ-type atomic system. 2D atom localization with the single ring with shrinking radii realized by the multiple parametric manipulations demonstrated the flexibility for our scheme.
Highlights
Because precise position measurement of a single atom has some potential applications, such as laser cooling and trapping of neutral atoms [1] [2], atom nanolithography [3], Bose-Einstein condensation [4], and measurement of center-of-mass wave function of moving atoms [5] [6], etc., atomic localization has attracted considerable investigation
Our aim is to investigate the precise location of the 2D atom localization via χ ′′
On the basis of a three-level Λ-type atom model, we investigated its 2D atom localization via different parameters of the two orthogonal standing-wave fields with the decreasing or increasing intensities of spontaneously generated coherence (SGC)
Summary
Because precise position measurement of a single atom has some potential applications, such as laser cooling and trapping of neutral atoms [1] [2], atom nanolithography [3], Bose-Einstein condensation [4], and measurement of center-of-mass wave function of moving atoms [5] [6], etc., atomic localization has attracted considerable investigation. Utilizing the interacting between an atom and the standing-wave field, one dimensional (1D) atom localization within the optical wavelength domain is realized by the measurement of the phase shift [7] [8], homodyne detection [9], quantum trajectories [10], the dual quadrature field [11], the upper level population [12]. How to cite this paper: Zhao, S.C. and Wu, Q.X. X. Wu [13], the probe field absorption or gain [14]-[16], two-photon spontaneous emission [17], the coherent population trapping [18] and the reservoir modes [19]-[21], etc
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