Search Results - "Kjærgaard, N"

Mesoscopic atomic entanglement for precision measurements beyond the standard quantum limit by Appel, J, Windpassinger, P.J, Oblak, D, Hoff, U.B, Kjærgaard, N, Polzik, E.S

“…Squeezing of quantum fluctuations by means of entanglement is a well-recognized goal in the field of quantum information science and precision measurements. In…”
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Multiple scattering dynamics of fermions at an isolated p-wave resonance by Thomas, R., Roberts, K. O., Tiesinga, E., Wade, A. C. J., Blakie, P. B., Deb, A. B., Kjærgaard, N.

“…The wavefunction for indistinguishable fermions is anti-symmetric under particle exchange, which directly leads to the Pauli exclusion principle, and hence…”
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Radio-over-fiber using an optical antenna based on Rydberg states of atoms by Deb, A. B., Kjærgaard, N.

“…We provide an experimental demonstration of a direct fiber-optic link for RF transmission (“radio-over-fiber”) using a sensitive optical antenna based on a…”
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Structural properties of two-component coulomb crystals in linear paul traps by Hornekaer, L, Kjaergaard, N, Thommesen, A M, Drewsen, M

“…We report on structural properties of two-component Coulomb crystals in a linear Paul trap. The crystals consist of two laser cooled ion species, 24Mg+ and…”
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Dispersive detection of atomic ensembles in the presence of strong lensing by Deb, A B, Chung, J, Kjærgaard, N

“…We experimentally and theoretically investigate in-medium propagation effects of off-resonant light in dense, spatially inhomogeneous ultracold atomic gases…”
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Dynamically excited single-component ion Coulomb crystals in linear Paul traps by Drewsen, M., Mortensen, A., Lindballe, J., Mølhave, K., Kjærgaard, N.

“…This paper briefly discusses a few experiments regarding dynamically excited crystalline structures in a linear Paul trap. The dynamically excited structures…”
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Nondestructive probing of Rabi oscillations on the cesium clock transition near the standard quantum limit by Windpassinger, P J, Oblak, D, Petrov, P G, Kubasik, M, Saffman, M, Alzar, C L Garrido, Appel, J, Müller, J H, Kjaergaard, N, Polzik, E S

“…We report on the nondestructive observation of Rabi oscillations on the Cs clock transition. The internal atomic state evolution of a dipole-trapped ensemble…”
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Isotope selective loading of an ion trap using resonance-enhanced two-photon ionization by Kjaergaard, N., Hornekaer, L., Thommesen, A.M., Videsen, Z., Drewsen, M.

“…We have demonstrated that resonance-enhanced two-photon ionization of atomic beams provides an effective tool for isotope selective loading of ions into a…”
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Density distribution in laser-cooled bunched beams by Madsen, N, Bowe, P, Drewsen, M, Hornekær, L.H, Kjærgaard, N, Labrador, A, Nielsen, J.S, Schiffer, J.P, Shi, P, Hangst, J.S

“…Knowledge of the density distribution of a bunched beam is important for controlling and damping instabilities which often depend on the distribution function…”
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Antibacterial properties of human amnion and chorion in vitro by Kjaergaard, N., Hein, M., Hyttel, L., Helmig, R.B., Schønheyder, H.C., Uldbjerg, N., Madsen, H.

“…Objective: The purpose of the present study was to explore the direct effects of amnion and chorion on bacterial growth in vitro including the antibacterial…”
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Microbiology of semen specimens from males attending a fertility clinic by KJÆRGAARD, N., KRISTENSEN, B., HANSEN, E. S., FARHOLT, S., SCHØONHEYDER, H. C., ULDBJERG, N., MADSEN, H.

“…The relationship between semen quality, pyospermia and bacteriology was studied in 201 semen specimens from male patients attending a fertility clinic. Semen…”
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Homocysteine and female fertility, pregnancy loss and offspring birthweight: a two-sample Mendelian randomization study by Kjaergaard, Alisa D., Wu, Yanxin, Ming, Wai-Kit, Wang, Zillian, Kjaergaard, Mathias N., Ellervik, Christina

“…Background/Objectives Observational studies link elevated homocysteine concentrations (Hcy) with female fertility, pregnancy loss, and low offspring…”
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Echo spectroscopy of atomic dynamics in a Gaussian trap via phase imprints by Oblak, D., Appel, J., Windpassinger, P. J., Hoff, U. B., Kjærgaard, N., Polzik, E. S.

“…We report on the collapse and revival of Ramsey fringe visibility when a spatially dependent phase is imprinted in the coherences of a trapped ensemble of…”
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Positive predictive value of ICD-10 diagnosis codes for brain abscess in the Danish National Patient Registry by Bodilsen, Jacob, Dalager-Pedersen, Michael, Kjærgaard, Nicolai, van de Beek, Diederik, Brouwer, Matthijs C, Nielsen, Henrik

“…To evaluate the positive predictive value (PPV) of ICD-10 diagnosis codes for brain abscess in the Danish National Patient Registry (DNPR). We examined medical…”
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An external-cavity laser diode at 635 nm for laser display applications by Samsøe, E., Kjærgaard, N., Lausen, H., Andersen, P.E., Petersen, P.M.

“…We describe a diode laser system at 635 nm, which has been developed for a colour laser display. The poor beam quality of conventional high power lasers has…”
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Distant RF field sensing with a passive Rydberg-atomic transducer by Otto, J. S, Chilcott, M, Deb, A. B, Kjærgaard, N

“…Appl. Phys. Lett. 123, 144003 (2023) We combine a rubidium vapor cell with a corner-cube prism reflector to form a passive RF transducer, allowing the…”
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Polarization-insensitive microwave electrometry using Rydberg atoms by Cloutman, M, Chilcott, M, Elliott, A, Otto, J. S, Deb, A. B, Kjærgaard, N

“…Physical Review Applied 21, 044025 (2024) We investigate the Autler-Townes splitting for Rydberg atoms dressed with linearly polarized microwave radiation,…”
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Density Limitations in a Stored Laser-Cooled Ion Beam by Madsen, N., Bowe, P., Drewsen, M., Hornekær, L. H., Kjærgaard, N., Labrador, A., Nielsen, J. S., Schiffer, J. P., Shi, P., Hangst, J. S.

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Dispersive detection of atomic ensembles in the presence of strong lensing by Deb, A. B, Chung, J, Kjærgaard, N

“…New Journal of Physics 22, 073017 (2020) We experimentally and theoretically investigate in-medium propagation effects of off-resonant light in dense,…”
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Recent results from laser cooling experiments in ASTRID – real-time imaging of ion beams by Kjærgaard, N, Aggerholm, S, Bowe, P, Hornekær, L, Madsen, N, Nielsen, J.S, Schiffer, J.P, Siegfried, L, Hangst, J.S

“…We describe the latest results from laser cooling experiments using Mg ions in the ASTRID storage ring. In particular, we focus on the transverse dynamics of…”
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