Mesoscopic non-classical atomic states for quantum information and metrology,
J. Appel, J. Renema, D. Oblak, A. Louchet-Chauvet, N. Kjærgaard & E. Polzik, Optics InfoBase Conference Papers
(2010) SCOPUS
Entanglement-assisted atomic clock beyond the projection noise limit,
A. Louchet-Chauvet, J. Appel, J. Renema, D. Oblak, N. Kjaergaard & E. Polzik, New Journal of Physics12,
065032
(2010) JOURNALSCOPUS
Mesoscopic atomic entanglement for precision measurements beyond the standard quantum limit,
J. Appel, P. Windpassinger, D. Oblak, U. Hoff, N. Kjærgaard & E. Polzik, Proceedings of the National Academy of Sciences of the United States of America106,
10960-10965
(2009) JOURNALSCOPUS
Ultra low-noise differential ac-coupled photodetector for sensitive pulse detection applications,
P. Windpassinger, M. Kubasik, M. Koschorreck, A. Boisen, N. Kjærgaard, E. Polzik & J. Müller, Measurement Science and Technology20,
055301
(2009) JOURNALSCOPUS
Squeezing of atomic quantum projection noise,
P. Windpassinger, D. Oblak, U. Hoff, A. Louchet, J. Appel, N. Kjrgaard & E. Polzik, Journal of Modern Optics56,
1993-1998
(2009) JOURNALSCOPUS
Quantum interface between light and atomic ensembles,
H. Krauter, J. Sherson, K. Jensen, T. Fernholz, J. Neergaard-Nielsen, B. Nielsen, D. Oblak, P. Windpassinger, N. Kjærgaard, A. Hilliard, C. Olausson, J. Müller & E. Polzik, Proceedings of the 18th International Conference on Laser Spectroscopy, ICOLS 2007
113-124
(2008) SCOPUS
Echo spectroscopy of atomic dynamics in a Gaussian trap via phase imprints,
D. Oblak, J. Appel, P. Windpassinger, U. Hoff, N. Kjærgaard & E. Polzik, European Physical Journal D50,
67-73
(2008) JOURNALSCOPUS
Inhomogeneous light shift effects on atomic quantum state evolution in non-destructive measurements,
P. Windpassinger, D. Oblak, U. Hoff, J. Appel, N. Kjærgaard & E. Polzik, New Journal of Physics10,
053032
(2008) JOURNALSCOPUS
Nondestructive probing of rabi oscillations on the cesium clock transition near the standard quantum limit,
P. Windpassinger, D. Oblak, P. Petrov, M. Kubasik, M. Saffman, C. Alzar, J. Appel, J. Müller, N. Kjærgaard & E. Polzik, Physical Review Letters100,
103601
(2008) JOURNALSCOPUS
Nondestructive interferometric characterization of an optical dipole trap,
P. Petrov, D. Oblak, C. Alzar, N. Kjærgaard & E. Polzik, Physical Review A - Atomic, Molecular, and Optical Physics75,
033803
(2007) JOURNALSCOPUS
Design and construction of a linear Paul trap for the study of crystalline beams,
N. Kjaergaard, K. Mølhave & M. Drewsen, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment540,
209-214
(2005) JOURNALSCOPUS
An external-cavity laser diode at 635 nm for laser display applications,
E. Samsøe, N. Kjærgaard, H. Lausen, P. Andersen & P. Petersen, Optics Communications245,
333-339
(2005) JOURNALSCOPUS
Dynamically excited single-component ion Coulomb crystals in linear Paul traps,
M. Drewsen, A. Mortensen, J. Lindballe, K. Mølhave & N. Kjærgaard, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment532,
237-240
(2004) JOURNALSCOPUS
Non-stationary Coulomb crystals in linear Paul traps,
M. Drewsen, I. Jensen, N. Kjaergaard, J. Lindballe, A. Mortensen, K. Mølhave & D. Voigt, Journal of Physics B: Atomic, Molecular and Optical Physics36,
525-532
(2003) JOURNALSCOPUS
Observation of a Structural Transition for Coulomb Crystals in a Linear Paul Trap,
N. Kjærgaard & M. Drewsen, Physical Review Letters91,
950021-950024
(2003) SCOPUS
Stability of Coulomb crystals in a linear Paul trap with storage-ring-like confinement,
N. Kjærgaard, K. Mølhave & M. Drewsen, Physical Review E - Statistical, Nonlinear, and Soft Matter Physics66,
015401
(2002) JOURNALSCOPUS
Structural properties of two-component Coulomb crystals in linear Paul traps,
L. Hornekær, N. Kjærgaard, A. Thommesen & M. Drewsen, Physical Review Letters86,
1994-1997
(2001) JOURNALSCOPUS
Crystalline beam emulations in a pulse-excited linear Paul trap,
N. Kjærgaard & M. Drewsen, Physics of Plasmas8,
1371-1375
(2001) JOURNALSCOPUS
Recent results from laser cooling experiments in ASTRID - real-time imaging of ion beams,
N. Kjærgaard, S. Aggerholm, P. Bowe, L. Hornekær, N. Madsen, J. Nielsen, J. Schiffer, L. Siegfried & J. Hangst, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment441,
196-202
(2000) JOURNALSCOPUS
Isotope selective loading of an ion trap using resonance-enhanced two-photon ionization,
N. Kjærgaard, L. Hornekær, A. Thommesen, Z. Videsen & M. Drewsen, Applied Physics B: Lasers and Optics71,
207-210
(2000) SCOPUS
Density distribution in laser-cooled bunched beams,
N. Madsen, P. Bowe, M. Drewsen, L. Hornekær, N. Kjærgaard, A. Labrador, J. Nielsen, J. Schiffer, P. Shi & J. Hangst, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment441,
203-208
(2000) JOURNALSCOPUS
Measurements on photo-ionization of 3s3p 1P1 magnesium atoms,
D. Madsen, S. Balslev, M. Drewsen, N. Kjærgaard, Z. Videsen & J. Thomsen, Journal of Physics B: Atomic, Molecular and Optical Physics33,
4981-4988
(2000) JOURNALSCOPUS
Tapered laser cooling of stored coasting ion beams,
N. Kjærgaard & M. Drewsen, Physics Letters, Section A: General, Atomic and Solid State Physics260,
507-511
(1999) SCOPUS
Density Limitations in a Stored Laser-Cooled Ion Beam,
N. Madsen, P. Bowe, M. Drewsen, L. Hornekær, N. Kjærgaard, A. Labrador, J. Nielsen, J. Schiffer, P. Shi & J. Hangst, Physical Review Letters83,
4301-4304
(1999) SCOPUS