Spin physics in solid helium: Experimental results and applications

Weis, A.; Kanorsky, S. I.; Arndt, Markus; Hänsch, T. W.

doi:10.1007/bf01338405

Cited by 15 publications

(3 citation statements)

References 13 publications

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“…The polarization signal is larger than prior work in argon by an order of magnitude [4]. However, it is still smaller than in solid He, where 50% contrast was reported [35].…”

contrasting

confidence: 42%

Longitudinal Spin Relaxation of Optically Pumped Rubidium Atoms in Solid Parahydrogen

et al. 2016

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“…The polarization signal is larger than prior work in argon by an order of magnitude [4]. However, it is still smaller than in solid He, where 50% contrast was reported [35].…”

contrasting

confidence: 42%

Longitudinal Spin Relaxation of Optically Pumped Rubidium Atoms in Solid Parahydrogen

et al. 2016

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“…Because of their long spin coherence time, atomic bubbles are extremely sensitive to external perturbations. The far-reaching goal of these investigations is the design of a novel technique to search for parity and timereversal violating atomic electric dipole moments [21,22] discussed in the next section.…”

Section: Alkali Atoms In Quantum Crystalsmentioning

confidence: 99%

“…On the one hand it is believed that alkali atoms trapped in solid helium (discussed in the previous section) may be promising candidates for performing a sensitive search for atomic edms [22]. The observed long coherence lifetime and corresponding small linewidths of the magnetic resonance signals are prerequisites for a highly sensitive edm search.…”

Section: Search For Permanent Electric Dipole Momentsmentioning

confidence: 99%

Laser-based precision magnetometry in fundamental and applied research

Weis

Wynands

2005

Optics and Lasers in Engineering

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In this paper we review research done by the recently founded Fribourg group for Atomic Physics (FRAP) using laser-assisted spin coherence spectroscopy of atomic samples in applied and fundamental physics. Spin coherence in optically pumped ensembles of paramagnetic atoms may be extremely long-lived when the samples are well shielded from external perturbations, like static or oscillating magnetic fields and field gradients, static electric fields, or crystalline field gradients. Conversely, such interactions may be studied with high sensitivity and precision when the decoherence that they produce is measured by optical means. We report on applications of this technique covering optical magnetometry for biomagnetic diagnostics, investigations of atomic impurities in quantum crystals, measurements of forbidden tensor polarizabilities and electric dipole moments, and the space-time resolved study of the diffusion of gas-phase atoms.

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Suche nach permanenten elektrischen Dipolmomenten: ein Test der Zeitumkehrinvarianz

Ramsey¹,

Weis

1996

Phys. Bl.

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Elementarteilchen konnen kein permanentes elektrisches Dipolmoment haben, wenn die Naturgesetze gegeniiber den diskreten Symmetrieoperationen von Raumspiegelung und Zeitumkehr invariant sind. Seit ihrer Entdeckung in den 50er Jahren ist die Verletzung der Raumspiegelungsinvarianz (Paritatsverletzung) in einer Vielzahl von Systemen untersucht worden. Ihre verschiedenen Erscheinungsformen lassen sich heute durch das sogenannte Standardmodell gut beschreiben. Demgegeniiber wurde bislang nur ein einziges Ma1 eine Verletzung der Zeitumkehrinvarianz beobachtet, deren Ursprung bis heute im Dunkeln geblieben ist. Verschiedene zur Zeit durchgefiihrte und geplante Experimente, die nach elektri: schen Dipolmomenten in Neutronen, Atomen und Molekiilen suchen, sollen in Zukunft mehr Licht auf die Mechanismen der T-Verletzung werfen und konnten moglicherweise Hinweise auf Physik jenseits des Standardmodells geben. Wir geben einen historischen Uberblick iiber die Suche nach elektrischen Dipolmomenten von Neutronen und Atomen.

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Spin physics in solid helium: Experimental results and applications

Cited by 15 publications

References 13 publications

Longitudinal Spin Relaxation of Optically Pumped Rubidium Atoms in Solid Parahydrogen

Longitudinal Spin Relaxation of Optically Pumped Rubidium Atoms in Solid Parahydrogen

Laser-based precision magnetometry in fundamental and applied research

Suche nach permanenten elektrischen Dipolmomenten: ein Test der Zeitumkehrinvarianz

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