scispace - formally typeset
Journal ArticleDOI: 10.1088/1572-9494/ABE229

Spatial-dependent probe transmission based high-precision two-dimensional atomic localization

04 Mar 2021-Communications in Theoretical Physics (IOP Publishing)-Vol. 73, Iss: 4, pp 045102
Abstract: Herein, we propose a scheme for the realization of two-dimensional atomic localization in a λ-type three-level atomic medium such that the atom interacts with the two orthogonal standing-wave fields and a probe field. Because of the spatially dependent atom-field interaction, the information about the position of the atom can be obtained by monitoring the probe transmission spectra of the weak probe field for the first time. A single and double sharp localized peaks are observed in the one-wavelength domain. We have theoretically archived high-resolution and high-precision atomic localization within a region smaller than λ/25 × λ/25. The results may have potential applications in the field of nano-lithography and advance laser cooling technology.

... read more


7 results found

Open access
01 Jan 1993-
Abstract: Abstract As early as 1917, Einstein had predicted that momentum is transferred in the absorption and emission of light, but it was not until the 1980's that such optical momentum transfer was used to cool and trap neutral atoms. By properly tuning laser light close to atomic transitions, atomic samples can be cooled to extremely low temperatures, the brightness of atomic beams can be enhanced to unprecedented values, and atoms can be manipulated with extraordinary precision. In this review several of the techniques for laser cooling and trapping of neutral atoms are described.

... read more

Topics: Wave function (54%), Charged particle (52%), Monte Carlo method (51%) ... show more

142 Citations

Journal ArticleDOI: 10.1088/1402-4896/ABE584
11 Feb 2021-Physica Scripta
Abstract: The control and modification of divergence angle and birefringent rotary photon drags under the effect of quantum tunnelling is investigated in this article. The circularly birefringence Δn=nr(+)−nr(−) , divergence angle θ d and rotary photon dragging angles θr(±) are found to have modified with the strength of tunnelling frequencies. The left and right circularly polarized beams show superlominality of group velocities −c/150 and −c/50, respectively, and the divergence angle of 0.050 radian per increment of tunnelling frequency. The maximum of rotary photon drags for both beams is measured θr(±)=±2 micro radian with fractional change of 2%. The output pulses intensities ∣Eout+(t)∣2 and ∣Eout−(t)∣2 show uniform undistorted shapes with tunnelling frequencies and no energy losses. The results could have significant applications in the fields of quantum optics, photonics, plasmonics and special mode imaging coding technology.

... read more

Topics: Quantum tunnelling (51%)

5 Citations

Journal ArticleDOI: 10.1007/S11468-021-01404-X
Muhammad Idrees1, Muhammad Idrees2, Muhib Ullah1, Bakth Amin Bacha2  +2 moreInstitutions (2)
08 Apr 2021-Plasmonics
Abstract: The two-dimensional (2D) atomic localization is theoretically investigated via tunable surface plasmon polaritons (SPPs), generated on the metal (Ag) surface coupled to a quantum coherent three-level $$\lambda$$ -type medium ( $$^{87}$$ Rb) embedded as a dielectric host. Such a useful scheme for highly precise atomic localization is reported by using the absorption spectrum of SPPs. Owing to space-dependent light–matter interaction, the sharp localized peaks are observed in a single wavelength domain of 2D space with maximum probability. By properly varying the system parameters, the precision and numbers of the localized peaks are controlled. Consequently, highly efficient and high-resolution atomic localization can be achieved in a region smaller than $$\lambda /20\times \lambda /20$$ . The spatial resolution of atomic localization is greatly improved as compared to the previously studied cases. These results may have potential useful applications in the fields of quantum nanoplasmonics, nanolithography, and nanophotonics.

... read more

4 Citations

Journal ArticleDOI: 10.1007/S11082-021-02894-Z
H. Nawab1, M. Usman2, Muhammad Idrees3, Muhammad Idrees4  +1 moreInstitutions (4)
Abstract: Surface plasmon polaritons are investigated at the interface of cesium atomic medium and silver-silica nano-composite. The polaritons rotary drag at the propagation length and penetration depth is significantly modified. The ratio of the wavelengths of surface plasmon polaritons and the free space electromagnetic waves are nearly 0.5810. The group velocity of plasmon polaritons is higher than the speed of light and is ranging from $$-6\times 10^9$$ to $$1\times 10^{10}$$ which shows higher superluminality in a small propagation length. The penetration depths of polaritons in cesium and nano-composite are $$1.5\times 10^{-10}m$$ and $$2\times 10^{-7}m$$ and vary with strength of the control fields. The rotary plasmon polaritons drag is in the rang of $$\pm 50$$ to $$\pm 60$$ nano radian at the propagation length of polaritons. The rotary plasmon polartions drag at the penetration depths of the atomic and the silver nano-composite media is noted in the range of $$\pm 10$$ atto radian and $$\pm 10$$ femto radian respectively. The results may find applications in modifying the sensor coding technology.

... read more

Topics: Surface plasmon polariton (60%), Plasmon (54%), Polariton (54%) ... show more

1 Citations

Journal ArticleDOI: 10.1007/S11082-021-03261-8
Hayatullah1, Muhammad Idrees2, Muhammad Idrees3, Bakth Amin Bacha3  +2 moreInstitutions (3)
Abstract: The Gain assisted medium is being investigated to modify the rotary photon drag with the phase and angular momentum of the photon. Significant gain doublets and normal/anomalous dispersion with high subliminal/superluminal are controlled and modified by the angular quantum number and phase of angular momentum of the probe beam. Parameters of pump and control and angular momentum of probe fields enhanced photon drag from micro radian to milli radian. A $$\pm\,5$$ micro radian drag is tune to $$\pm\, 100$$ milli radian with these parameters. The rotary photon drag show large fluctuation with phase and quantum number of angular momentum of probe beam. The rotary photon drag is greatly improved as compared to the previously studied cases. The work is useful for advancing the technologies of position control, phase matching conditions and special modes of imaging coding.

... read more

Topics: Angular momentum (58%), Azimuthal quantum number (56%), Radian (56%) ... show more


67 results found

Journal ArticleDOI: 10.1088/0143-0807/9/4/001
Abstract: The basic physical effects leading to radiation-induced forces are reviewed. A simple derivation of the mathematical expressions for the classical light forces is given. The influence of quantum fluctuations is demonstrated and the possibilities for trapping neutral particles are discussed. Two recent successful laser cooling and trapping experiments are described to illustrate the applications of the basic principles.

... read more

Topics: Resolved sideband cooling (57%), Laser cooling (57%), Doppler cooling (54%) ... show more

1,236 Citations

Open accessJournal ArticleDOI: 10.1103/REVMODPHYS.70.721
William D. Phillips1Institutions (1)
Topics: Laser cooling (64%), Sisyphus cooling (63%)

1,175 Citations

Open accessJournal ArticleDOI: 10.1103/PHYSREVLETT.85.2733
12 May 2000-
Abstract: Summary form only given. It has been known for some time that entangled photon pairs, such as generated by spontaneous parametric down conversion, have unusual imaging characteristics with sub-shot-noise interferometric phase measurement. In fact, Fonseca, et al., recently demonstrated resolution of a two-slit diffraction patterned at half the Rayleigh limit in a coincidence counting experiment. What we show is that this type of effect is possible not only in coincidence counting experiments, but also in real two-photon absorbing systems, such as those used in classical interferometric lithography. In particular, we will demonstrate that quantum entanglement is the resource that allows sub-diffraction limited lithography.

... read more

1,153 Citations

Journal ArticleDOI: 10.1103/PHYSREVLETT.87.073601
Hai Wang1, David Goorskey1, Min Xiao1Institutions (1)
Abstract: We measure the Kerr-nonlinear index of refraction of a three-level Lambda-type atomic system inside an optical ring cavity. The Kerr nonlinearity is modified and greatly enhanced near atomic resonant conditions for both probe and coupling beams. The Kerr nonlinear coefficient n(2) changes sign when the coupling beam frequency detuning switches sign, which can lead to interesting applications in optical devices such as all-optical switches.

... read more

Topics: Kerr effect (63%), Atomic coherence (61%), Refraction (52%) ... show more

376 Citations

Journal ArticleDOI: 10.1103/PHYSREVA.70.053818
Ying Wu1, Ying Wu2, Xiaoxue Yang1Institutions (2)
18 Nov 2004-Physical Review A
Abstract: We perform a time-dependent analysis of four-wave mixing (FWM) in a double-$\ensuremath{\Lambda}$ system in an ultraslow-propagation regime and obtain the analytical expressions of pulsed probe laser, FWM-generated pulse, phase shifts and absorption coefficients, group velocities, and FWM efficiency. With these analytical expressions, we show that an efficiently generated FWM field can acquire the same ultraslow group velocity $({V}_{g}∕c\ensuremath{\sim}{10}^{\ensuremath{-}4}--{10}^{\ensuremath{-}5})$ and pulse shape of a probe pump and that the maximum FWM efficiency is greater than 25%, which is orders of magnitude larger than previous FWM schemes in the ultraslow-propagation regime.

... read more

Topics: Absorption (logic) (57%), Four-wave mixing (52%)

376 Citations