5. Physikalisches Institut

Hauptseminar: SS2014: Precision Measurements




The goal of this seminar is to discuss the state-of-the-art in the field of precision measurements. Each presentation will introduce one specific sort of precision measurement. We will discuss the relevance of each physical quantity that is measured with high accuracy and precision and the current leading experiments in each research area.


Course requirements (Bedingungen für den Schein)

  • This seminar is in English. This includes the talk, discussions, and the summary paper
  • Attend all seminar classes
  • Timely and intensive study of your own topic. The suggested literature for each topic serves as a starting point and is NOT sufficient. Independent literature search is required.
  • Presentation of your topic in the seminar, duration 45 minutes
  • Written summary paper on your topic (4 pages "PRL style" using LaTeX)
  • The following deadlines have to be met to successfully complete this class. You are responsible to organize the meetings with the class supervisors!
    • 4 weeks before your talk: Discussion with your supervisor AFTER finding & reading the literature
    • 2 weeks before your talk: test talk
    • 4 weeks after your talk: Hand-in of your summary paper


  • Sr Lattice Clock (Supervisor: Robert Löw)
    Robin Lingstädt - 15.05. - summary paper
  • The radius of the proton (Supervisor: Axel Griesmaier)
    Tobias Rau -22.05.- summary paper
  • Magnetic field measurements with single spins (Supervisor: Harald Kübler)
    Matthias Feldmaier – 05.06. - summary paper
  • Precision measurement of electrical quantities and h (Supervisor: Harald Kübler)
    Robert Sittig – 26.06. - summary paper
  • Measurements of g - The link between Time and Mass (Supervisor: Tilman Pfau)
    Fabian Böttcher – 03.07. - summary paper
  • Gravitational wave detection (Supervisor: Sebastian Hofferberth)
    Nicolas Zuber -10.07. - summary paper


    Possible topics

    • 1. Sr Lattice Clock (Supervisor: Harald Kübler)
    • 2.  Rydberg-Series of Hydrogen (Supervisor: Harald Kübler)
    • 3. Fine-Structure constant measurement with Hydrogen / Anti-Hydrogen (Supervisor: Robert Löw)
      • a T. Hänsch, et. al., Doppler-Free Two-Photon Spectroscopy of Hydrogen 1S-2S, PRL 34 307 (1975)
      • b C. Parthey, et.al., Precision Measurement of the Hydrogen-Deuterium 1S  2S Isotope Shift, PRL 104, 233001 (2010)
      • c K. Eikema et. al.,, Continuous Wave Coherent Lyman-a Radiation, PRL 83 3828 (1999)
    • 4. Precison mass measurement of ions (Supervisor: Robert Löw)
    • 5. The radius of the proton (Supervisor: Axel Griesmaier)
      • R. Pohl et al., Nature 466, 213–216 (2010).
      • A. Antognini et al., Science 339, 417–420 (2013).
      • Science Podcast: 25 January Show, Science 339, 468 (2013).
    • 6. Dipole moment of the electron (Supervisor: Graham Lochead)
      • J. J. Hudson et al., Improved measurement of the shape of the electron, Nature 473, 493-496 (2011)
      • A. C. Vutha et al., Search for the electric dipole moment of the electron with thorium monoxide, J. Phys. B: At. Mol. Opt. Phys. 43 (2010) 074007
    • 7. Magnetic field measurements with single spins (Supervisor: Sebastian Hofferberth)
      • Maze et al., "Nanoscale magnetic sensing with an individual electronic spin in diamond", Nature 455, 644
      • Balasubramanian et al., "Nanoscale imaging magnetometry with diamond spins under ambient conditions", Nature 455, 648
      • Hall et al., "High spatial and temporal resolution wide field imaging of neuron activity using quantum NV-diamond", Scientific Reports 2, 401
    • 8. Precision measurement of electrical quantities and h (Supervisor: Axel Griesmaier)
      • J. Weis and K. von Klitzing, Philosophical Transactions of the Royal Society A 369, 3954(2011).
      • R. L. Steiner, E. R. Williams, D. B. Newell, and R. Liu, Metrologia 42, 431–441 (2005).
      • T. Funck and V. Sienknecht, IEEE Trans. Instrum. Meas. 40, 158 (1991).
      • P. J. Mohr, B. N. Taylor, and D. B. Newell, CODATA recommended values of the fundamental physical constants: 2006 & 2010
    • 9. Measurements of g - The link between Time and Mass (Supervisor: Tilman Pfau)
      • Peters et al., "Measurement of gravitational acceleration by dropping atoms", Nature 400, 849-852
      • Lan et al., "A clock directly linking time to a particle’s mass", Science, 339, 554 (2013)
    • 10.  Gravitational wave detection (Supervisor: Sebastian Hofferberth)
      • Ligo Scientific Collaboration, "LIGO: the Laser Interferometer Gravitational-Wave Observatory", Rep. Prog. Phys. 72 076901
      • ESA, "NGP Revealing a hidden Universe: opening a new chapter of discovery: Assessment Study Report", ESA/SRE(2011) 19 (http://www.elisa-ngo.org)
      • Ligo Scientific Collaboration, "A gravitational wave observatory operating beyond the quantum shot-noise limit", Nature Phys. 7, 962–965
    • 11.  Measurements of G - Tests of the Equivalence principle (Supervisor Tilman Pfau)
      • Schwarz et al.,  "A Free-Fall Determination of the Newtonian Constant of Gravity", Science 18, 2230
      • Lamporesi et al, "Determination of the newtonian gravitational constant using atom interferometry", Phys. Rev. Lett. 100, 050801
      • Fixler et al., "Atom interferometer measurement of the newtonian constant of gravity", Science 315, 74-77
      • Baldi et al., "Gravitational constant G measured with a superconducting gravimeter", Phys. Rev. D 71, 022002
      • Quinn et al., " Improved Determination of G Using Two Methods" Phys. Rev. Lett. 111, 101102 (2013)
    • 12.  Parity Nonconservation (Supervisor: Graham Lochead)
      • T. D. Lee and C.N. Yang, Question of Parity Conservation in Weak Interactions, Physical Review 104, 254 (1956)
      • C. S. Wu et al., Experimental Test of Parity Conservation in Beta Decay, Physical Review 105, 1413-1415 (1957)
      • R. L. Garwin et al., Observations of the Failure of Conservation of Parity and Charge Conjugation in Meson Decays: the Magnetic Moment of the Free Muon, Physical Review 104 1415-1417 (1957)
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