Spin clocks

• Verfasst von: Heil, Werner [VerfasserIn]
• Verfasst von: Allmendinger, Fabian [VerfasserIn]
• Verfasst von: Schmidt, Ulrich [VerfasserIn]
• Titel: Spin clocks
• Titelzusatz: probing fundamental symmetries in nature
• Verf.angabe: Werner Heil, Claudia Gemmel, Sergei Karpuk, Yuri Sobolev, Kathlynne Tullney, Fabian Allmendinger, Ulrich Schmidt, Martin Burghoff, Wolfgang Kilian, Silvia Knappe‐Grüneberg, Allard Schnabel, Frank Seifert, and Lutz Trahms
• E-Jahr: 2013
• Jahr: 21 June 2013
• Umfang: 11 S.
• Teil: volume:525
• Teil: year:2013
• Teil: number:8/9
• Teil: pages:539-549
• Teil: extent:11
• Fussnoten: Gesehen am 08.10.2021
• Titel Quelle: Enthalten in: Annalen der Physik
• Ort Quelle: Berlin : Wiley-VCH, 1799
• Jahr Quelle: 2013
• Band/Heft Quelle: 525(2013), 8/9, Seite 539-549
• ISSN Quelle: 1521-3889
• DOI: doi:10.1002/andp.201300048
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1750106876

Abstract

The detection of the free precession of co-located 3He/129Xe nuclear spins (clock comparison) is used as ultra-sensitive probe for non-magnetic spin interactions, since the magnetic dipole interaction (Zeeman-term) drops out in the weighted frequency difference, i.e., Δω = ωHe- γHe/γXe·ωXe of the respective Larmor frequencies. Recent results are reported on searches for (i) short-range P- and T-violating interactions between nucleons, and (ii) Lorentz violating signatures by monitoring the Larmor frequencies as the laboratory reference frame rotates with respect to distant stars (sidereal modulation). Finally, a new experimental initiative to search for an electric dipole moment of 129Xe (CP-violation) is discussed, which strongly benefits from the long spin-coherence times obtained, reaching > 100 h and > 8 h in case of 3He and 129Xe, respectively.