Publication list

• 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 Physics 12, 065032 (2010)
  JOURNAL  SCOPUS


• 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 America 106, 10960-10965 (2009)
  JOURNAL  SCOPUS


• 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 Technology 20, 055301 (2009)
  JOURNAL  SCOPUS


• Squeezing of atomic quantum projection noise,
  P. Windpassinger, D. Oblak, U. Hoff, A. Louchet, J. Appel, N. Kjrgaard & E. Polzik,
  Journal of Modern Optics 56, 1993-1998 (2009)
  JOURNAL  SCOPUS


• 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 D 50, 67-73 (2008)
  JOURNAL  SCOPUS


• 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 Physics 10, 053032 (2008)
  JOURNAL  SCOPUS


• 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 Letters 100, 103601 (2008)
  JOURNAL  SCOPUS


• 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 Physics 75, 033803 (2007)
  JOURNAL  SCOPUS


• 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 Equipment 540, 209-214 (2005)
  JOURNAL  SCOPUS


• An external-cavity laser diode at 635 nm for laser display applications,
  E. Samsøe, N. Kjærgaard, H. Lausen, P. Andersen & P. Petersen,
  Optics Communications 245, 333-339 (2005)
  JOURNAL  SCOPUS


• 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 Equipment 532, 237-240 (2004)
  JOURNAL  SCOPUS


• 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 Physics 36, 525-532 (2003)
  JOURNAL  SCOPUS


• Observation of a Structural Transition for Coulomb Crystals in a Linear Paul Trap,
  N. Kjærgaard & M. Drewsen,
  Physical Review Letters 91, 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 Physics 66, 015401 (2002)
  JOURNAL  SCOPUS


• Structural properties of two-component Coulomb crystals in linear Paul traps,
  L. Hornekær, N. Kjærgaard, A. Thommesen & M. Drewsen,
  Physical Review Letters 86, 1994-1997 (2001)
  JOURNAL  SCOPUS


• Crystalline beam emulations in a pulse-excited linear Paul trap,
  N. Kjærgaard & M. Drewsen,
  Physics of Plasmas 8, 1371-1375 (2001)
  JOURNAL  SCOPUS


• 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 Equipment 441, 196-202 (2000)
  JOURNAL  SCOPUS


• 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 Optics 71, 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 Equipment 441, 203-208 (2000)
  JOURNAL  SCOPUS


• 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 Physics 33, 4981-4988 (2000)
  JOURNAL  SCOPUS


• Tapered laser cooling of stored coasting ion beams,
  N. Kjærgaard & M. Drewsen,
  Physics Letters, Section A: General, Atomic and Solid State Physics 260, 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 Letters 83, 4301-4304 (1999)
   SCOPUS