Cesium atoms (blue shaded areas) are trapped at the sites of an optical lattice. An overlapping standing wave created by lasers (dashed line), displaced by Δ x with respect to the trapping lattice, excites most atoms within each lattice site, while leaving a narrow window in which the fraction of excited atoms is zero.
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We trap 10 7 cesium atoms in a far red detuned 1D optical lattice. With degenerate Raman sideband cooling we achieve a vibrational ground state population of 80% for the steep trapping direction. Collisional coupling enables us to cool the spin-polarized gas in 3D without loss of atoms to a peak phase space density of 1 / 1 8 0 at a …
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We present our progress towards measuring the electron EDM using laser-cooled cesium and rubidium atoms trapped in a one dimensional optical lattice. We have launched laser-cooled Cs atoms in a ...
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The number of cesium atoms trapped in a magneto-optical ... They monitored the fluorescence signal of the trapped atoms while scanning the detuning of the slowing laser from −100 MHz to 0 and ...
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Abstract. Based on single Cesium atoms trapped in a 1064 nm microscopic optical trap we have exhibited a single qubit encoded in the Cesium "clock states". The single qubit initialization ...
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Abstract. Two-photon spectroscopy of atomic cesium confined and cooled in a magneto-optical trap is reported. The hyperfine structure of the 6D (5/2) state is determined with 1% accuracy. New ...
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Cesium atoms are trapped in the evanescent field surrounding the nanofiber-waist of a tapered optical fiber. The atoms are located about 200 nano meter above the nanofiber surface in two diametric one-dimensional arrays of potential wells, with at most one atom per trapping site.
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individual cesium atoms that are located less than 300 nm away from the surface of a solid at ambient temperature, close to their motional ground state. The atoms are trapped near the nanofiber part of a tapered opticalfiber usinga nanofiber-basedopticaldipoletrap[6]. We implement degenerate Raman cooling (DRC) [16–20],
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For cold cesium atoms in the F = 3, m F = 3 state prepared by three-dimensional degenerated Raman sideband cooling, a large number of atoms ∼ 3.2 × 10 6 have been loaded into a large-volume crossed dipole trap with the help of the magnetic levitation technique. The dependence of the number of atoms loaded and trapped in the …
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In our system, we have already captured [2,9] and transferred [10,11] single atoms to optical tweezer efficiently, built cesium (Cs) magic-wavelength optical dipole trap [2, 3], and finally ...
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Abstract We trap 107 cesium atoms in a far red detuned 1D optical lattice. With degenerate Raman sideband cooling we achieve a vibrational ground state …
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Researchers have trapped cesium atoms near a dielectric nanostructure before, but Goban et al. enhance existing trapping …
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The motion of individual cesium atoms trapped inside an optical resonator is revealed with the atom-cavity microscope (ACM). A single atom moving within the …
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We experimentally study the ground state coherence properties of cesium atoms in a nanofiber-based two-color dipole trap, localized 200 nm away from the fiber …
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We have trapped cesium atoms in the microwave field of a spherical resonator tuned to the blue of the ground state hyperfine splitting ({approx}9 GHz). Using 50 W of microwave power, the trap is quite shallow (10-100 {mu}K) and large (radius {approx} 1 cm) and cannot hold cesium atoms up against gravity. ...
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DOTSENKOet al. Application of electro-optically generated light fields for Raman spectroscopy of trapped cesium atoms 713 FIGURE 4 Three-level atom with two Raman lasers (pump and Stokes) A Raman transition is a stimulated scattering of a photon from one laser field into the other. This is realized by coup-ling two laser fields to a three-level …
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They first verified the presence of a cesium BEC and a degenerate lithium gas. With an applied magnetic field, they then induced an interaction between the fermions and bosons that caused roughly 100 lithium atoms to become trapped in the center of the cesium cloud. This cloud trap functioned even when the interaction between atoms was …
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We report observations of superradiance for atoms trapped in the near field of a photonic crystal waveguide (PCW). By fabricating the PCW with a band edge near the D 1 transition of atomic cesium, strong interaction is achieved between trapped atoms and guided-mode photons. Following short-pulse excitation, we record the
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By integrating the techniques of laser cooling and trapping with those of cavity quantum electrodynamics (QED), single cesium atoms have been trapped within …
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We experimentally study the ground state coherence properties of cesium atoms in a nanofiber-based two-color dipole trap, localized ∼ 200 nm away from the …
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free-falling atoms and these WGM microcavities has been observed [23–25], trapping an atom in the evanescent field of the WGMs still remains a challenge. Here, we present the observation of strong coupling between trapped single cesium atoms and an all-fiber cavity. Our cavity relies on tight transversal-mode confine-
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be approximately the same size as the trapped- atom cloud. After frequency stabilization, spatial filtering, and amplitude noise subtraction, the probe laser power at the trap was -40 pW. Absorption by the trapped cesium atoms was typically 1% and provided a signal-to-noise ratio of -10 in a 200-kHz detection bandwidth.
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Abstract. We have trapped a cold sample of cesium atoms in a magneto-optical trap. The damped harmonic force of magneto-optical trap was used to capture and trap the cesium atoms directly from a ...
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Here three colliding atoms at the zero-energy threshold resonantly couple to an Efimov trimer (see arrow for a < 0 in Fig. 1), which opens up a rapid decay path into more deeply bound dimer states. Such a decay resonance was first observed in an ultracold trapped gas of cesium atoms . The resonance is shown in the left-hand panel of Fig. 3.
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julienne, p.s., collisions of ultracold trapped atoms, journal of the optical society of america b-optical physics 6: 2257 (1989). google scholar. kasevich, m., atomic physics 12 (1991). ... monroe, c, observation of the cesium clock transition using laser-cooled atoms in a vapor cell, optics letters 16: 50 (1991).
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The decay in the hyperfine coherence of optically trapped atoms due to interactions with the environment, is only partly suppressed by 'echo' spectroscopy [M. F. Andersen et al. Phys. Rev. Lett. 90, 023001 (2003)], primarily due to dynamical (time-dependent) dephasing mechanisms. ... Trap-induced resonances in controlled collisions …
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In this experiment cesium atoms in a low-pressure vapor were optically trapped. The trapped atoms were then cooled further and optically pumped into the 6S I F, mF) = 14, 0) state. Subsequently all light was switched off, permitting the atoms to fall in the dark under the force of gravity. As the atoms fell, two
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Abstract. We present a systematic study of the Λ-enhanced gray molasses cooling (Λ-GMC) of cesium atoms on the D2 transition. Due to the large splitting in the excited hyperfine transitions of ...
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We report observations of superradiance for atoms trapped in the near field of a photonic crystal waveguide (PCW). By fabricating the PCW with a band edge near the D$_1$ transition of atomic cesium, strong interaction is achieved between trapped atoms and guided-mode photons. Following short-pulse excitation, we record the decay of …
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VOLUME 81, NUMBER 26 PHYSICAL REVIEW LETTERS 28 DECEMBER 1998 Degenerate Raman Sideband Cooling of Trapped Cesium Atoms at Very High Atomic Densities Vladan Vuletic´, Cheng Chin, Andrew J. Kerman, and Steven Chu Department of Physics, Stanford University, Stanford, California 94305-4060 (Received 25 August …
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Up to 10^8 atoms are trapped to a density of 3 times 10^{10} atoms/cm ^3, and can be cooled to under 5 muK. As an example of the uses of trapped and cooled atoms, spectroscopy of the cesium "clock" transition is performed on optically trapped and cooled cesium atoms, yielding excellent fractional frequency resolution.
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We trap 107 cesium atoms in a far red detuned 1D optical lattice. With degenerate Raman sideband cooling we achieve a vibrational ground state population of 80% for the steep trapping direction.
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Abstract. We experimentally study the ground state coherence properties of cesium atoms in a nanofiber-based two-color dipole trap, localized ∼200 nm away …
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The entire contents of this thesis entitled Laser Cooling and Trapping of Cesium Atoms by Muhammad Anwar are an intellectual property of Pakistan Institute of Engineering & Applied Sciences (PIEAS).
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As an intermediate step, we also determine the photoionization cross section of Cs 6P3/2 atoms at 473 nm wavelength to be 2.28(±0.33)×10−21m2. Discover the world's research 25+ million members
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Cesium atoms (blue shaded areas) are trapped at the sites of an optical lattice. An overlapping standing wave created by lasers (dashed line), displaced by Δx Δ …
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