Dressed spin of polarized<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn>3</mml:mn></mml:msup></mml:math>He in a cell

Chu, Pinghan; Esler, A.; Peng, J. C.; Beck, D.; Chandler, Danielle E.; Clayton, Steven; Hu, Bin; Ngan, S. Y.; Sham, C. H.; So, Lok-hang; Williamson, S. E.; Yoder, Jacob

doi:10.1103/physrevc.84.022501

Cited by 22 publications

(32 citation statements)

References 14 publications

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“…Note in regard to the latter that spin dressing of 3 He in an atomic beam [68,69] and in a cell [75] has been previously demonstrated. Similarly, critical spin dressing on 1 H and 19 F in a liquid sample has also been performed [61].…”

Section: Systematics and Operational Studies Apparatusmentioning

confidence: 75%

The neutron electric dipole moment experiment at the Spallation Neutron Source

et al. 2019

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Novel experimental techniques are required to make the next big leap in neutron electric dipole moment experimental sensitivity, both in terms of statistics and systematic error control. The nEDM experiment at the Spallation Neutron Source (nEDM@SNS) will implement the scheme of Golub & Lamoreaux [Phys. Rep., 237, 1 (1994)]. The unique properties of combining polarized ultracold neutrons, polarized 3 He, and superfluid 4 He will be exploited to provide a sensitivity to ∼ 10 −28 e · cm. Our cryogenic apparatus will deploy two small (3 L) measurement cells with a high density of ultracold neutrons produced and spin analyzed in situ. The electric field strength, precession time, magnetic shielding, and detected UCN number will all be enhanced compared to previous room temperature Ramsey measurements. Our 3 He co-magnetometer offers unique control of systematic effects, in particular the Bloch-Siegert induced false EDM. Furthermore, there will be two distinct measurement modes: free precession and dressed spin. This will provide an important self-check of our results. Following five years of "critical component demonstration," our collaboration transitioned to a "large scale integration" phase in 2018. An overview of our measurement techniques, experimental design, and brief updates are described in these proceedings.

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Section: Systematics and Operational Studies Apparatusmentioning

confidence: 75%

The neutron electric dipole moment experiment at the Spallation Neutron Source

et al. 2019

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“…That modification producing a magnetic "freezing" of the two-level response, (i.e. a nonmagnetic system), was examined for atoms in [3][4][5][6], for a Bose-Einstein condensate of chromium in [7], for an artificial atom in [8], and recently proposed for improving the precision of optical clocks [9].…”

Section: Introductionmentioning

confidence: 99%

Continued-fraction analysis of dressed systems: Application to periodically driven optical lattices

Zanon-Willette¹,

Clercq²,

Arimondo³

2013

Phys. Rev. A

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International audienceRadio-frequency quantum engineering of spins is based on the dressing by a nonresonant electromagnetic field. Radio-frequency dressing occurs also for the motion of particles, electrons, or ultracold atoms, within a periodic spatial potential. The dressing, producing a renormalization and also a freeze of the system energy, is described by different approaches: dressed atom, magnetic resonance semiclassical treatment, and continued-fraction solution of the Schrödinger equation. A comparison between these solutions points out that the semiclassical treatment, to be denoted as the S solution, represents the most convenient tool to evaluate the tunneling renormalization of ultracold atoms

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“…One might be able to study the breakdown of the quasistatic approximation using a cell-type experiment, such as that presented in Ref. [15]. In this case, one would use a rapidly modulated dressing field to explore appropriate regions of parameter space.…”

Section: Discussionmentioning

confidence: 99%

Time-dependent spin dressing using a3He atomic beam

et al. 2012

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We have performed high-precision experimental measurements of spin precession using a dressed 3 He atomic beam. Spin dressing uses an oscillating magnetic field that is both detuned to high frequency and orthogonal to a static magnetic field to effectively change the gyromagnetic ratio of a spin. We verify the validity of the spin-dressing Hamiltonian in regions beyond the limiting solution in which the Larmor frequency is much smaller than the frequency of the dressing field. We also evaluate the effect of magnetic field misalignment, i.e. if the oscillating magnetic field is not orthogonal to the static magnetic field. Modulation of the dressing-field parameters is also discussed, with a focus on whether such a modulation can be approximated merely as a time-dependent, dressed gyromagnetic ratio. Furthermore, we discuss implications for a proposed search for the neutron electric dipole moment, which would employ spin dressing to make the effective 3 He and neutron magnetic moments equal.

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Dressed spin of polarized3He in a cell

Cited by 22 publications

References 14 publications

The neutron electric dipole moment experiment at the Spallation Neutron Source

The neutron electric dipole moment experiment at the Spallation Neutron Source

Continued-fraction analysis of dressed systems: Application to periodically driven optical lattices

Time-dependent spin dressing using a3He atomic beam

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