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Optical Control over Nuclear Spins
Published 2023“…We will also discuss how laser cooling of nuclear spin excitations can be realized via the ONQ effect.…”
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222
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Buffer gas cooling of ions in radio-frequency traps using ultracold atoms
Published 2022-01-01“…Thus, buffer gas cooling is a viable alternative for ions that are not amenable to laser cooling, a result that may be of interest for studies into cold controlled quantum chemistry and charged impurity physics.…”
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225
In-situ thermal simulation experiment of single organic matter pore evolution in shale
Published 2023-09-01“…By using femtosecond laser, cooling-heating stage, microscope and SEM techniques, the in-situ observation of pore evolution of the single organic matters in shale can be realized, and the pore development process and evolution law of different types of organic matters can be distinguished. …”
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226
Measuring the temperature and heating rate of a single ion by imaging
Published 2019-01-01“…We collect the fluorescence light scattered by the ion during laser cooling and image it onto a camera. Accounting for the size of the point-spread function and the magnification of the imaging system, we determine the spatial extent of the ion, from which we infer the mean phonon occupation number in the trap. …”
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227
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Sub-hertz optical frequency metrology using a single ion of 171Yb+
Published 2012“…Additionally, the introduction of polarisation modulation on the cooling light has allowed the residual bias magnetic field required for laser cooling to be reduced by a factor of thirty.</p> <p>The first measurement at the National Physical Laboratory (NPL) of the frequency of the <sup>2</sup>S<sub>1/2</sub> (<em>F</em> = 0) → <sup>2</sup>D<sub>3/2</sub> (<em>F′</em> = 2) electric quadrupole (E2) transition at 436 nm is presented. …”
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Combination of a cold ion and cold molecular source
Published 2014“…Fluorescence emitted as a consequence of laser-cooling is detected; the subsequent fluorescence profiles are used to determine the number of ions in the crystal and, in combination with complementary simulations, the temperature of these ions. …”
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Fast optical transport of ultracold molecules over long distances
Published 2022-01-01“…Optically trapped laser-cooled polar molecules hold promise for new science and technology in quantum information and quantum simulation. …”
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231
Raman Cooling to High Phase Space Density
Published 2022“…This is the first demonstration of direct laser cooling to a true three-dimensional BEC. Next it is shown that when evaporation and Raman cooling are both used in the same sequence, pure BECs can be produced in as little as 575 ms. …”
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232
Simplified Assembly of Through-Silicon-Via Integrated Ion Traps
Published 2023“…The functionality of TSV trap on customized CPGA is also demonstrated by trapping and laser cooling the 88Sr+ ions. The measured heating rate (21 quanta per millisecond for an axial frequency of 300 kHz) is comparable with the trap assembled in previous approach. …”
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233
Stabilization and control in a linear ion trap
Published 2003“…An existing ion trap apparatus was capable of trapping and laser-cooling single ions or small ion strings of 40 Ca+, and had been used for studies of quantum jumps and natural lifetime measurements in Ca. …”
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Device-independent key distribution between trapped-ion quantum network nodes
Published 2022“…</p> <p>To compensate stray electric fields that would cause a periodic modulation of the ion position, we introduce a versatile method which relies on the synchronous detection of parametrically excited motion through time-stamped detection of photons scattered during laser cooling. Crucially, only a single laser beam is required to resolve fields in multiple directions; we achieve a stray field sensitivity of 0.1 V m⁻¹ / √Hz.…”
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Towards cold state-selected ion-molecule reactions
Published 2014“…In particular, the generation of trapped molecular ions at mK temperatures has been achieved by sympathetic-cooling with laser-cooled atomic ions. By implementing schemes to selectively prepare and control the internal quantum state of molecular ions, and developing detection techniques, it will be increasingly possible to study cold state-selected chemical collisions in an ion-trap.…”
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236
An optical tweezer array of ultracold molecules
Published 2021“…In this work, we report on creating an optical tweezer array of laser-cooled calcium monofluoride molecules. This platform has also allowed us to observe ground-state collisions of laser-cooled molecules both in the presence and absence of near-resonant light.…”
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237
An optical tweezer array of ultracold molecules
Published 2022“…In this work, we report on creating an optical tweezer array of laser-cooled calcium monofluoride molecules. This platform has also allowed us to observe ground-state collisions of laser-cooled molecules both in the presence and absence of near-resonant light.…”
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238
Nanostructured optical nanofibres for atom trapping
Published 2014-01-01“…This scheme facilitates optical coupling between the atoms and the nanofibre that could be exploited for quantum communication schemes using ensembles of laser-cooled atoms.…”
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