Precise localization of a two-level atom by the superposition of two standing-wave fields

Dutta, Bibhas Kumar; Panchadhyayee, Pradipta; Mahapatra, P. K.

doi:10.1364/josab.29.003299

Cited by 22 publications

(12 citation statements)

References 51 publications

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“…To find the susceptibility under linear response theory based on quantum regression theorem, we have followed the traditional approach as described in refs. 17,37 . The linear susceptibility χ ω ( ) p of the probe field of frequency ω p is given in terms of the Fourier transform of the average value of the two-time commutator of the atomic operator as 17,37…”

Section: Theoretical Formulationmentioning

confidence: 99%

“…17,37 . The linear susceptibility χ ω ( ) p of the probe field of frequency ω p is given in terms of the Fourier transform of the average value of the two-time commutator of the atomic operator as 17,37…”

Section: Theoretical Formulationmentioning

confidence: 99%

“…Different fields of studies like atom nano-lithography 6 , laser cooling and trapping of neutral atoms 7 and Bose-Einstein condensation 8 have been enriched by the versatile applications of atom localization. The pioneering works 2,3,9,10 on atom localization involving energy and phase shifts with spatial variation are followed by studies in one dimension [11][12][13][14][15][16][17][18] , which describe the fundamental aspects of measurement-induced localization of atoms through a variety of atom-field configurations. To be more specific, an interesting property of coherent population trapping (CPT) is exploited in the study of atom localization 14 .…”

mentioning

confidence: 99%

“…High-precision localization exhibited in refs. 15,17 is attributed to the effect of dynamic phase modulation in the pump-probe resonance. The 1D-localization based works mainly highlight effective control and desired manipulation of the localization peaks in sub-wavelength, or sub-half-wavelength domain.…”

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confidence: 99%

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Optical absorption microscopy of localized atoms at microwave domain: two-dimensional localization based on the projection of three-dimensional localization

Dutta¹,

Panchadhyayee

Bayal³

et al. 2020

Sci Rep

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A new approach for achieving two-dimensional (2D) atom localization microscopy based on the projection of three-dimensional (3D) localization in the plane of the detector is described in the present work. Spatial variation of the position-dependent 2D-localization pattern in the xy-plane is obtained with the shifting of the position of the detector along the z-axis under the parallel-and cross-axis configurations of the standing-wave fields. An attempt is made to study the 2D-localization characteristics in the specific parametric conditions for which the localization structures evolve with different shapes eventually leading to 100% detection probability of the atom both in the subwavelength and sub-half-wavelength regimes. The scope of tuning the cross-axis configuration over a wide range adds novelty and robustness to this model. Apart from the 2D-localization, various localization patterns with eight-to single-peak structures appear as interesting outcomes through the efficient manipulation of control parameters in the study of one-dimensional (1D) atom localization. The application of the traveling-wave field or its equivalent appears to be unique in achieving high-precision localization with maximal probability (100%) in both the 1D and 2D field-configuration schemes. Proper tuning of the traveling wave accompanied by the standing wave in the 1D scheme results in the singlepeak localization in the sub-half-wavelength range. As a whole, the present work seems to be very much efficient for high-precision optical lithography.

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Section: Theoretical Formulationmentioning

confidence: 99%

Section: Theoretical Formulationmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Optical absorption microscopy of localized atoms at microwave domain: two-dimensional localization based on the projection of three-dimensional localization

Dutta¹,

Panchadhyayee

Bayal³

et al. 2020

Sci Rep

Self Cite

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“…This research has many potential applications, which include trapping of neutral atoms, atom nanolithography and so on [1][2][3][4]. A large number of theoretical studies have been proposed by researchers for one-dimensional (1D) atom localization via the effect of atomic coherence and quantum interference [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. In these schemes, the position information of the atom has been correlated with the spatial distribution of the quantities, i.e., resonance fluorescence, level population, spontaneous emission, probe absorption and gain, due to the intensity modulation of a standing-wave field.…”

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confidence: 99%

High-precision three-dimensional atom localization in a three-level pump–probe atomic system

Zheng

Wang

2018

Can. J. Phys.

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We propose a new scheme for three-dimensional (3D) atom localization controlled by incoherent pump in a three-level Λ-type atomic system. The spatial position information of an atom in 3D space can be achieved via measuring probe gain and absorption when the atom passes through three mutually perpendicular standing-wave fields. It is found that high-detecting-probability and high-precision 3D atom localization can be obtained via properly adjusting the relevant parameters in the presence of the combination of a traveling-wave field and three orthogonal standing-wave fields. Furthermore, it is also shown that the incoherent pumping field can switch the localization patterns from the probe-gain sphere to the probe-absorption sphere and enhance 3D atom-localization precision.

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Efficient control of three-dimensional atom localization via probe absorption in a phase-coherent atomic medium

Banerjee,

Panchadhyayee,

Dutta

2024

Appl. Phys. B

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Precise localization of a two-level atom by the superposition of two standing-wave fields

Cited by 22 publications

References 51 publications

Optical absorption microscopy of localized atoms at microwave domain: two-dimensional localization based on the projection of three-dimensional localization

Optical absorption microscopy of localized atoms at microwave domain: two-dimensional localization based on the projection of three-dimensional localization

High-precision three-dimensional atom localization in a three-level pump–probe atomic system

Efficient control of three-dimensional atom localization via probe absorption in a phase-coherent atomic medium

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