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181
Accelerating relaxation through Liouvillian exceptional point
Published 2023-10-01“…Finally, we extend this approach to analyze laser cooling of trapped ions, where vibrations (phonons) couple to the electronic states. …”
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182
Shaping Beam Profiles Using Plastic Optical Fiber Tapers with Application to Ice Sensors
Published 2020-04-01“…Using either bulk or fiber optics the profile of laser beams can be altered from Gaussian to top-hat or hollow beams allowing enhanced performance in applications like laser cooling, optical trapping, and fiber sensing. Here, we report a method based on multimode Plastic Optical Fibers (POF) long-tapers, to tweak the beam profile from near Gaussian to a hollow beam, by generating surface irregularities on the conical sections of the taper with a heat-and-pull technique. …”
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183
Towards experiments on a superconducting atom chip.
Published 2009“…This thesis widely reviews the literatures on laser cooling and trapping, magnetic trapping and atom chip. …”
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184
Applying machine learning optimization methods to the production of a quantum gas
Published 2020“…For the first time, we optimize both laser cooling and evaporative cooling mechanisms simultaneously. …”
Journal article -
185
Reservoir-based deterministic loading of single-atom tweezer arrays
Published 2023-07-01“…For this purpose, we connect a microlens-based tweezer array to a cloud of laser-cooled atoms held in an auxiliary large-focus dipole trap by utilizing atom transport and buffer traps for dedicated single-atom supply. …”
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186
Robust dynamical exchange cooling with trapped ions
Published 2020-01-01“…This is considerably faster than can be achieved using laser cooling in the weak coupling regime, which makes this an attractive scheme in the context of quantum computing.…”
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187
Dissipative preparation of antiferromagnetic order in the Fermi-Hubbard model
Published 2016-01-01“…However, the temperatures achieved using elaborate laser cooling protocols so far have been too high to show the appearance of antiferromagnetic (AF) and superconducting quantum phases directly. …”
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188
The scientific career and contributions of Prof. Wang Yiqiu
Published 2022-09-01“…Having contributed greatly to fields of research such as nuclear magnetic resonance, microwave atomic clocks, laser cooling of atoms, Bose–Einstein condensate, optical tweezers, and optical atomic clocks, the venerable Prof. …”
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189
Bright multiplexed source of indistinguishable single photons with tunable GHz-bandwidth at room temperature
Published 2021-01-01“…Our source is based on four-wave mixing in hot rubidium vapor, requiring no laser cooling or optical cavities, and generates single photons with high rate and low noise. …”
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190
Buffer-Gas Cooled Bose-Einstein Condensate
Published 2010“…This method is applicable to a wide array of paramagnetic atoms and molecules, many of which are impractical to laser cool and impossible to surface cool.…”
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191
Sideband cooling of small ion Coulomb crystals in a Penning trap
Published 2017“…We have recently demonstrated the laser cooling of a single 40Ca+ ion to the motional ground state in a Penning trap using the resolved-sideband cooling technique on the electric quadrupole transition S1/2 ↔ D5/2. …”
Journal article -
192
Simple, near-universal relationships between bond lengths, strengths, and anharmonicities
Published 2023-11-01“…Although not spectroscopically accurate, these models are nonetheless of significant heuristic value for identifying strongly multireference states of diatomic molecules (including electronically coupled excited states ill-suited for inclusion in laser-cooling schemes), rationalizing the observed trends in vibrational frequencies for diatomics and/or local mode oscillators within molecules or complexes and estimating and/or validating covalent bonding parameters within molecular mechanics force fields. …”
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193
Measuring the nuclear magnetic quadrupole moment of optically trapped ytterbium atoms in the metastable state
Published 2024-01-01“…We propose a scheme to measure a nuclear magnetic quadrupole moment (MQM), a $\mathcal{CP}$ -violating electromagnetic moment that appears in the nuclear sector, using the long-lived $^3P_2$ metastable state in neutral ^173 Yb atoms. Laser-cooling and trapping techniques enable us to prepare ultracold ^173 Yb atoms in the $^3P_2$ state trapped in an optical lattice or an optical tweezer array, providing an ideal experimental platform with long spin coherence time. …”
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194
Isotope-selective photoionization for calcium ion trapping
Published 2004“…We achieve loading and laser cooling of all the naturally occurring isotopes, without the need for enriched sources. …”
Journal article -
195
Single qubit manipulation in a microfabricated surface electrode ion trap
Published 2013-01-01“…Trapping times exceeding 20 min without laser cooling, and heating rates as low as 0.8 quanta ms ^−1 , indicate stable trapping conditions in these microtraps. …”
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196
RF acceleration of ultracold electron bunches
Published 2023-09-01“…The ultrafast and ultracold electron source, based on laser cooling and trapping of atomic gas and its subsequent near-threshold two-step photoionization, is capable of generating electron bunches with a high transverse brightness at energies of roughly 10 keV. …”
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197
Theoretical framework for thin film superfluid optomechanics: towards the quantum regime
Published 2016-01-01“…The optomechanical system outlined here provides access to unusual regimes such as ${g}_{0}\gt {{\rm{\Omega }}}_{M}$ and opens the prospect of laser cooling a liquid into its quantum ground state.…”
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198
Multipurpose platform for analog quantum simulation
Published 2024-02-01“…Our two-chamber architecture relies on a robust combination of gray molasses and optical transport from a laser-cooling chamber to a glass cell with excellent optical access. …”
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199
Surface-electrode point Paul trap
Published 2010“…We demonstrate trapping of single [superscript 88]Sr[superscript +] ions over an ion height range of 200-1000 mu m for several hours under Doppler laser cooling and use these to characterize the trap, finding good agreement with our model.…”
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200
Doppler and sympathetic cooling for the investigation of short-lived radioactive ions
Published 2022-09-01“…Cooling externally-produced hot ions with energies of at least 7 eV down to a few Kelvin is achieved in a timescale of O(100 ms) by combining a low-pressure helium background gas with laser cooling. This is sufficiently short to cool short-lived radioactive ions. …”
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