Quantum control of trapped polyatomic molecules for eEDM searches

Anderegg, Loïc; Vilas, Nathaniel B.; Hallas, Christian; Robichaud, Paige; Jadbabaie, Arian; Doyle, John M.; Hutzler, Nicholas R.

doi:10.1126/science.adg8155

Cited by 14 publications

(1 citation statement)

References 50 publications

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“…We refer to such a condition as a 'magic magnetic field' (MMF). Similar ideas have been explored in the context of eEDM search with nearly-degenerate states in polyatomic molecules [57] and in the more general context of molecular CP-violation searches with transitions between non-degenerate states, and in the latter case have shown their general existence among many molecular species [21]. The possibility of MMFs are investigated in the experimentally convenient region B < 20 G, and the MMF values are summarized in table 5, where we find several MMFs for E ext values of 50 kV cm −1 and 100 kV cm −1 .…”

Section: Experimental Schemementioning

confidence: 90%

Measuring the nuclear magnetic quadrupole moment of optically trapped ytterbium atoms in the metastable state

Sunaga,

Takahashi,

Vutha

et al. 2024

New J. Phys.

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We propose a scheme to measure a nuclear magnetic quadrupole moment (MQM), a CP-violating electromagnetic moment that appears in the nuclear sector, using the long-lived 3P2 metastable state in neutral 173Yb atoms. Laser-cooling and trapping techniques enable us to prepare ultracold 173Yb atoms in the 3P2 state trapped in an optical lattice or an optical tweezer array, providing an ideal experimental platform with long spin coherence time. In addition, our relativistic configuration interaction calculation for the 3P2 electronic wavefunction reveals a large magnetic field gradient generated by the atomic electrons in this state, which amplifies the measurable effect of an MQM. Our scheme could lead to an improvement of more than one order of magnitude in MQM sensitivity compared to the best previous measurement [S. A. Murthy et al., Phys. Rev. Lett. 63, 965 (1989)].

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Section: Experimental Schemementioning

confidence: 90%

Measuring the nuclear magnetic quadrupole moment of optically trapped ytterbium atoms in the metastable state

Sunaga,

Takahashi,

Vutha

et al. 2024

New J. Phys.

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Searching for axion forces with spin precession in atoms and molecules

Agrawal,

Hutzler,

Kaplan

et al. 2024

J. High Energ. Phys.

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We propose to use atoms and molecules as quantum sensors of axion-mediated monopole-dipole forces. We show that electron spin precession experiments using atomic and molecular beams are well-suited for axion searches thanks to the presence of co-magnetometer states and single-shot temporal resolution. Experimental strategies to detect axion gradients from localised sources and the earth are presented, taking ACME III as a prototype example. Other possibilities including atomic beams, and laser-cooled atoms and molecules are discussed.

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Global analysis of $$ \mathcal{CP} $$-violation in atoms, molecules and role of medium-heavy systems

Gaul,

Berger

2024

J. High Energ. Phys.

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Detection of parity $$ \left(\mathcal{P}\right) $$ P and time-reversal $$ \left(\mathcal{T}\right) $$ T symmetry-odd electric dipole moments (EDMs) within currently achievable resolution would evidence physics beyond the Standard Model of particle physics. Via the $$ \left(\mathcal{CPT}\right) $$ CPT -theorem, which includes charge conjugation $$ \left(\mathcal{C}\right) $$ C , such low-energy searches complement high-energy physics experiments that probe $$ \left(\mathcal{CP}\right) $$ CP -violation up to the TeV scale. Heavy-elemental atoms and molecules are considered to be among the most promising candidates for a first direct detection of $$ \mathcal{P} $$ P , $$ \mathcal{T} $$ T -violation due to enhancement effects that increase steeply with increasing nuclear charge number Z. However, different $$ \mathcal{P} $$ P , $$ \mathcal{T} $$ T -odd sources on the subatomic level can contribute to molecular or atomic EDMs, which are target of measurements, and this complicates obtaining rigorous bounds on $$ \mathcal{P} $$ P , $$ \mathcal{T} $$ T -violation on a fundamental level. Consequently, several experiments of complementary sensitivity to these individual $$ \mathcal{P} $$ P , $$ \mathcal{T} $$ T -odd sources are required for this purpose. Herein, a simply-applicable qualitative model is developed for global analysis of the $$ \mathcal{P} $$ P , $$ \mathcal{T} $$ T -odd parameter space from an electronic-structure theory perspective. Rules of thumb are derived for the choice of atoms and molecules in terms of their angular momenta and nuclear charge number. Contrary to naive expectations from Z-scaling laws, it is demonstrated that medium-heavy molecules with Z ≤ 54 can be of great value to tighten global bounds on $$ \mathcal{P} $$ P , $$ \mathcal{T} $$ T -violating parameters, in particular, if the number of complementary experiments increases. The model is confirmed by explicit density functional theory calculations of all relevant $$ \mathcal{P} $$ P , $$ \mathcal{T} $$ T -odd electronic structure parameters in systems that were used in past experiments or are of current interest for future experiments, respectively: the atoms Xe, Cs, Yb, Hg, Tl, Ra, Fr and the molecules CaOH, SrOH, YO, CdH, BaF, YbF, YbOH, HfF+, WC, TlF, PbO, RaF, ThO, ThF+ and PaF3+.

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Quantum control of trapped polyatomic molecules for eEDM searches

Cited by 14 publications

References 50 publications

Measuring the nuclear magnetic quadrupole moment of optically trapped ytterbium atoms in the metastable state

Measuring the nuclear magnetic quadrupole moment of optically trapped ytterbium atoms in the metastable state

Searching for axion forces with spin precession in atoms and molecules

Global analysis of $$ \mathcal{CP} $$-violation in atoms, molecules and role of medium-heavy systems

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