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201
Bidirectional, Analog Current Source Benchmarked with Gray Molasses-Assisted Stray Magnetic Field Compensation
Published 2021-11-01“…We demonstrate how such compensation can be achieved without actually measuring the stray fields present, thus speeding up the process of optimization of various laser cooling stages.…”
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Article -
202
Integrated-Photonics Devices and Architectures for Advanced Cooling of Trapped Ions
Published 2023“…This thesis demonstrates key integrated-photonics devices and architectures to enable enhanced laser cooling of integrated trapped-ion systems. First, we develop the framework for two advanced trapped-ion cooling schemes, polarization-gradient and electromagnetically-induced-transparency cooling. …”
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Thesis -
203
Strain-induced spatially indirect exciton recombination in zinc-blende/wurtzite CdS heterostructures
Published 2020“…Strain proved to be capable of enhancing the anti-Stokes emission, suggesting that the efficiency of laser cooling may be improved by strain engineering.…”
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Journal Article -
204
A compact and laser-induced source of ultracold strontium atoms
Published 2021“…Lastly, the ablation technique used also opens up laser cooling possibilities to other elements such as Tungsten that normally require high temperature.…”
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Final Year Project (FYP) -
205
Large-scale fabrication of surface ion traps on a 300 mm glass wafer
Published 2022“…The ion lifetime is on the order of 30 min with laser cooling with a vacuum chamber pressure of ≈5 × 10−11 mbar. …”
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Journal Article -
206
Manipulating single atoms with optical tweezers
Published 2014“…Finally, we demonstrate the ability to select individual atoms from an array and transport them over a distance of 14μm with laser cooling, and 5 μm without.</p>…”
Thesis -
207
Reliable transport through a microfabricated X-junction surface-electrode ion trap
Published 2013-01-01“…Doppler-cooled ions survive more than 10 ^5 round-trip transits between junction legs without loss and more than 65 consecutive round trips without laser cooling.…”
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Article -
208
Continuous-Wave Crystalline Laser at 714 nm via Stimulated Raman Scattering and Sum Frequency Generation
Published 2022-07-01“…The present compact design for CW laser source at 714 nm is believed to be practically useful for laser cooling and trapping of radium.…”
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Article -
209
Resolved-sideband Raman cooling of an optical phonon in semiconductor materials
Published 2020“…Recently, by using the electrostrictive forces of light, spontaneous Brillouin cooling and stimulated Brillouin excitation of acoustic modes of the whispering-gallery-type resonator have been demonstrated. The laser cooling of specific lattice vibrations in solids (that is, phonons) proposed by Dykman in the late 1970s, however, still remains sparsely investigated. …”
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Journal Article -
210
Dynamics of quantum gas in non-abelian gauge field
Published 2021“…To observe this e ect, we have performed laser cooling in two major steps 461 nm magneto-optical trap (MOT) and 689 nm MOT and then loaded the atoms into an optical dipole trap. …”
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Thesis-Doctor of Philosophy -
211
The formation of ultracold rubidium molecules using ultrafast photoassociation
Published 2010“…The establishment of robust laser-cooling techniques for the formation of ultracold atoms has provided a test-bed for low-temperature science, with scattering events changing character from incoherent thermal interactions to coherent quantum mechanical events. …”
Thesis -
212
Periodically driven atomic systems
Published 2014“…Periodic driving is ubiquitous in most techniques used in atomic physics, be it laser cooling, ion trapping or AC magnetic fields. An in-depth understanding of the behaviour of such systems can be provided through Floquet theory which will develop as a central theme in the following chapters.…”
Thesis -
213
Towards an imaging lattice for magnetically trapped atoms
Published 2017“…In most cases, the excitation light frequency is chosen so that there is a concomitant laser cooling effect. In existing implementations of an imaging lattice the preceding manipulation stage has used optical trapping and manipulation. …”
Thesis -
214
The Design, Fabrication and Characterization of a Transparent Atom Chip
Published 2014-06-01“…An area on the chip was reserved for the optical access, so that the laser light can penetrate directly through the glass substrate for the laser cooling process. Furthermore, since the thermal conductivity of the glass substrate is poorer than other common materials for atom chip substrate, for example silicon, silicon carbide, aluminum nitride. …”
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Article -
215
Enhanced molecular yield from a cryogenic buffer gas beam source via excited state chemistry
Published 2020-01-01“…More generally, our work presents a broad approach for improving experiments that use cryogenic molecular beams for laser cooling and precision measurement searches of BSM physics.…”
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Article -
216
High-contrast sub-Doppler absorption spikes in a hot atomic vapor cell exposed to a dual-frequency laser field
Published 2017-01-01“…Apart from their theoretical interest, results obtained in this manuscript are of great interest for laser spectroscopy and laser frequency stabilization purposes, with applications in laser cooling, matter-wave sensors, atomic clocks or quantum optics.…”
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217
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218
TSV-integrated surface electrode ion trap for scalable quantum information processing
Published 2021“…We demonstrate the basic functionality of the trap by loading and laser-cooling single 88Sr+ ions. It is found that both heating rate (17 quanta/ms for an axial frequency of 300 kHz) and lifetime (~30 minutes) are comparable with traps of similar dimensions. …”
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Journal Article -
219
Bose gases in double-well potentials
Published 2020“…</p> <p>Furthermore, we describe the application of machine learning methods to optimise the experimental sequence, in particular the stages of laser cooling and evaporative cooling which are necessary to achieve a quantum gas. …”
Thesis -
220
Cryogenic optomechanics with a Si3N4 membrane and classical laser noise
Published 2012-01-01“…Finally, we discuss the use of a passive filter cavity to remove classical laser noise, and consider the future requirements for laser cooling this relatively large and low-frequency mechanical element to very near its quantum mechanical ground state.…”
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Article