Far off resonant trap

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August undefined, 2024

WebDec 23, 2024 · We report on the stable effective trapping of cold rubidium atoms by a method for a single optical trap in the near-optical resonant regime. An optical trap with the near-optical resonance condition consists of not only the dipole but also the radiative forces, while a trap using a far-off resonance dominates only the dipole force. We measure the … WebOct 5, 2004 · We study in detail the mechanisms causing dephasing of hyperfine coherences of cesium atoms confined by a far off-resonant standing wave optical dipole …

Trapping and cooling single atoms with far-off-resonance …

WebFar-off-resonant light traps (FORT) were used for knowing the loading and compressing Cs atoms. 3×10 7 Cs atoms were loaded into a 400 μm crossed beam far-off-resonant trap … WebJan 18, 2016 · One can see that pumping reaches the ideal value at the lowest loading temperature in the far-off-resonant trap (FORT) of 33(4) nK, which corresponds to 0.24(4)T F, where T F is the Fermi ... msn change email password

Single atom movement with dynamic holographic optical tweezers

Webdipole trap aims to decrease the photon scattering, damaging to the coherence, and differential ac Stark shift introduced by the trapping laser. We use a far off-resonance trap (FORT) to reduce the photon scattering rate and choose a blue-detuned trap where the atoms are conﬁned on the minima of the light ﬁeld, the so-called dark region of ... WebJul 1, 1993 · In far-off resonant traps for cold atoms formed by focused laser beams, recoil limited heating rates below the millikelvin per second … WebIn order to achieve atom trap lifetimes greater than 10 s, far-off resonant trap (FORT) depths on the order of milli-Kelvin are required. Unfortunately, FORTs operating in this regime also induce excited state AC stark shifts that compromise laser cooling and coherent control of the optical transitions. A major goal of this research is to ... how to make google docs hipaa compliant

FORT Definition: Far Off-Resonant Trap Abbreviation Finder

Laser-noise-induced heating in far-off resonance optical traps

WebAug 14, 2014 · A far-off-resonance optical trap for a Ba. ion. Optical trapping and ions combine unique advantages of independently striving fields of research. Light fields can … WebAug 26, 2002 · We have succeeded in simultaneously trapping a fermion and boson isotope pair of ytterbium (Yb) in a far off-resonant trap (FORT). We have found evidence of elastic cross collisions between fermions and bosons, and performed a successful sympathetic cooling of the fermions. We could also enhance the loading of the fermions … how to make google docs not editableWebJul 4, 2024 · By cooling the atomic system considerably below MOT temperatures to ≈ 100 nK in an optical far-off resonance trap, we image local losses imprinted into the measurable atomic density profile. msn channel on direct tv

"WebOct 5, 2004 · We study in detail the mechanisms causing dephasing of hyperfine coherences of cesium atoms confined by a far off-resonant standing wave optical dipole trap [S. Kuhr et al., Phys. Rev. Lett. 91, 213002 (2003)]. Using Ramsey spectroscopy and spin echo techniques, we measure the reversible and irreversible dephasing times of the … " - Far off resonant trap

Far off resonant trap

Loading and compressing Cs atoms in a very far-off …

WebJan 30, 2024 · The ~10 K trap depth will be produced by a tightly-focused, 1064-nm cavity capable of reaching intensities of hundreds of GW/cm. Molecules will be directly buffer-gas loaded into the trap using a helium buffer gas at 1.5 K. The very far-off-resonant, quasi-electrostatic trapping mechanism is insensitive to a molecule's internal state, energy ... WebFar-off-resonant light traps (FORT) were used for knowing the loading and compressing Cs atoms. 3×10 7 Cs atoms were loaded into a 400 μm crossed beam far-off-resonant trap (FORT). Atoms in the FORT were compressed to a spatial density of 2×10 13 atoms/cm 3, and spontaneous emission in the FORT was negligible.

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WebJun 1, 1993 · The far-detuned trap confines atoms with a strong, nearly conservative optical force and negligible atomic excitation confined in an optical dipole force trap with a very … WebAcronym Definition; FORT: Framework for Ocaml Regression Testing: FORT: Friends of the Rail Trail: FORT: Far Off-Resonant Trap: FORT: Force Trends Database (DIA): FORT

WebAug 24, 2006 · Download PDF Abstract: We present the simultaneous cooling and trapping of an isotopic mixture in a magneto-optical trap and we describe the transfer of the mixture into a conservative, far-off resonant dipole trap. The mixture is prepared with a new technique that applies to intermediate and heavy alkaline earth like atoms. In this work, … WebAs detailed below, there is another advantage associated with an off-resonant optical dipole trap established by focusing with a deep parabolic mirror: The spatial confinement of the atom is small enough to have a negligible effect on the interaction with a tightly focused beam that excites the atom on resonance. ... The far-off-resonant trap ...

WebJul 16, 2009 · For our optical molasses conditions we calculate that our cooling efficiencies require induced ground-state coherences. We present data and estimates which are consistent with heteronuclear long-ranged induced dipole-dipole collisions disrupting these ground state coherences, leading to a loss of optical trap loading efficiency. WebFeb 1, 2003 · The U.S. Department of Energy's Office of Scientific and Technical Information

WebMay 1, 1993 · @article{osti_281600, title = {Collisional loss of atoms from a far-off resonance optical dipole trap}, author = {Heinzen, D J and Cline, R A and Matthews, M …

Webdetailed discussion of trap loss and trap state dynamics to future work. In a far-off resonance red detuned trap, the effective po-tential can be written as V~x!52 1 4 … how to make google docs not anonymousWebThe second project that I worked on was constructing an optical trap. The oscillating electric field of a laser in an optic trap induces an oscillating atomic electric dipole moment. A potential is produced that corresponds to the intensity of the laser beam. If the laser frequency is tuned below the atomic resonance, the atoms are attracted how to make google docs longWebJun 1, 1993 · A typical trap contains 1300 atoms at a temperature of 0.4 mK and a peak density of 8× 1011 cm−3. We measure spontaneous photon scatter rates of the trapped … msn change language to englishWebJan 21, 2024 · Figure 1. Experimental setup scheme. 87 Rb atoms are cooled in a magneto-optical trap and single atoms are loaded in a far-off resonance optical tweezer formed by tightly focusing an 852 nm beam with an aspherical lens with NA = 0.77 and effective focal length f = 3.1 mm to a waist of 0.97 m. Power required for a single trap is about 3.5 mW. how to make google docs editableWebFar off-resonance optical traps provide conservative potentials ... trap is occupied by a single atom that can be individually addressed3–6. At present, signiﬁcant effort is being expended how to make google docs in dark modeWebNov 24, 2014 · Optical trapping of Ba + in a far-off-resonance dipole trap. The protocol for optical trapping is illustrated in Fig. 1.We still exploit an … msn change locationWebRb IN A FAR OFF RESONTANT TRAP The experiments described in this thesis were focused on the physics of simultaneous trapping of 85 Rb and 87 Rb into a Far Off Resonant Trap (FORT), with a view towards the implementation of a non evaporative cooling scheme. Atoms were first how to make google docs look aesthetic