Enhanced sensitivity to ultralight bosonic dark matter in the spectra of the linear radical SrOH

Kozyryev, Ivan; Lasner, Zack; Doyle, John M.

doi:10.1103/physreva.103.043313

Cited by 45 publications

(34 citation statements)

References 107 publications

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“…From measurements of Autler-Townes splittings we obtain Ω 2 , the angular Rabi frequency of the anti-Stokes coupling for various anti-Stokes laser powers. From a conservative estimate of the anti-Stokes laser beam waist, we find a transition strength of 8.6(9) × 10 −2 (ea 0 ) 2 for X(0, 0) → (1)0 + u (11,1). This is one of the strongest molecular transitions in 88 Sr 2 , with a value approaching that of a typical atomic transition.…”

Section: Spectroscopic Constantmentioning

confidence: 83%

“…(a) Differential lightshift (black squares) of X(62, 0) → X(0, 0). Together with the trap frequency measurements, these imply a polarizability ratio α /α = 1.5176(11) at a trap wavelength of 914.0(1) nm, allowing for the measured trap frequencies of X(62, 0) to be scaled to that of X(0, 0). Solid red line is a linear fit to the data.…”

mentioning

confidence: 84%

“…Error bars are smaller than the symbol size. (c) EIT spectrum in a Λ-system formed by X(62, 0), X(0, 0) and (1)0 + u (11,1). Each point is a single experimental shot.…”

Section: High-resolution Spectroscopymentioning

confidence: 99%

“…Molecules serve as natural test beds for molecular quantum electrodynamics [1][2][3][4], in addition to tests of beyond-Standard-Model physics such as searches for T -symmetry violation [5][6][7][8][9][10], dark matter [11][12][13], time variation of fundamental constants [14][15][16][17][18], and non-Newtonian gravity [19]. In this regard, alkaline-earth-metal molecules represent an exciting frontier since their closed-shell structure lead to 1 Σ ground potentials that are naturally insensitive to external perturbations.…”

Section: Introductionmentioning

confidence: 99%

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Ultracold $^{88}\rm{Sr}_2$ molecules in the absolute ground state

Leung,

Tiberi,

Iritani

et al. 2021

Preprint

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We report efficient all-optical creation of an ultracold gas of alkalineearth-metal dimers, 88 Sr 2 , in their absolute ground state. Starting with weakly bound singlet molecules formed by narrow-line photoassociation in an optical lattice, followed by stimulated Raman adiabatic passage (STIRAP) via a singlet-dominant channel in the (1)0 + u excited potential, we prepare pure samples of more than 5500 molecules in X 1 Σ + g (v = 0, J = 0). We observe two-body collisional loss rates close to the universal limit for both the least bound and most bound vibrational states in X 1 Σ + g . We demonstrate the enhancement of STIRAP efficiency in a magic-wavelength optical lattice where thermal decoherence is eliminated. Our results pave the way for the use of alkaline-earth-metal dimers for high-precision spectroscopy, and indicate favorable prospects for robust quantum state preparation of ultracold molecules involving closedshell atoms, as well as molecule assembly in deep optical traps tuned to a magic wavelength.

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Section: Spectroscopic Constantmentioning

confidence: 83%

mentioning

confidence: 84%

“…Error bars are smaller than the symbol size. (c) EIT spectrum in a Λ-system formed by X(62, 0), X(0, 0) and (1)0 + u (11,1). Each point is a single experimental shot.…”

Section: High-resolution Spectroscopymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ultracold $^{88}\rm{Sr}_2$ molecules in the absolute ground state

Leung,

Tiberi,

Iritani

et al. 2021

Preprint

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“…Polyatomic molecules, as compared to diatomic molecules, have additional rotational and vibrational degrees of freedom that promise new possibilities in quantum simulation [22][23][24], quantum computation [25], ultracold collisions [26], and BSM searches [27,28]. Due to these distinct degrees of freedom, polyatomic molecules are also more challenging to cool and trap.…”

mentioning

confidence: 99%

Magneto-Optical Trapping and Sub-Doppler Cooling of a Polyatomic Molecule

Vilas,

Hallas,

Anderegg

et al. 2021

Preprint

Self Cite

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We report magneto-optical trapping (MOT) of a polyatomic molecule, calcium monohydroxide (CaOH). The MOT contains 2.0(5) × 10 4 CaOH molecules at a peak density of 3.0(8) × 10 6 cm −3 . CaOH molecules are further sub-Doppler laser cooled in an optical molasses, to a temperature of 110(4) µK. The temperatures and densities achieved here make CaOH a viable candidate for a wide variety of quantum science applications, including the creation of optical tweezer arrays of CaOH molecules. This work also suggests that laser cooling and magneto-optical trapping of many other polyatomic species [1-3] will be both feasible and practical.

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A Century Ago the Stern–Gerlach Experiment Ruled Unequivocally in Favor of Quantum Mechanics

Friedrich

2023

Israel Journal of Chemistry

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In 1921, Otto Stern conceived the idea for an experiment that would decide between a classical and a quantum description of atomic behavior, as epitomized by the Bohr–Sommerfeld–Debye model of the atom. This model entailed not only the quantization of the magnitude of the orbital electronic angular momentum but also of the projection of the angular momentum on an external magnetic field – the so‐called space quantization. Stern recognized that space quantization would have observable consequences: namely, that the magnetic dipole moment due to the orbital angular momentum would be space quantized as well, taking two opposite values for atoms whose only unpaired electron has just one quantum of orbital angular momentum. When acted upon by a suitable inhomogeneous magnetic field, a beam of such atoms would be split into two beams consisting of deflected atoms with opposite projections of the orbital angular momentum on the magnetic field. In contradistinction, if atoms behaved classically, the atomic beam would only broaden along the field gradient and have maximum intensity at zero deflection, i. e., where there would be a minimum or no intensity for a beam split due to space quantization. Stern anticipated that, although simple in principle, the experiment would be difficult to carry out – and invited Walther Gerlach to team up with him. Gerlach's realism and experimental skills together with his sometimes stubborn determination to make things work proved invaluable for the success of the Stern–Gerlach experiment (SGE). After a long struggle, Gerlach finally saw, on 8 February 1922, the splitting of a beam of silver atoms in a magnetic field. The absence of the concept of electron spin confused and confounded the interpretation of the SGE, as the silver atoms were, in fact, in a 2S state, with zero orbital and 12 ${{1 \over 2}}$ spin angular momentum. However, a key quantum feature whose existence the SGE was designed to test – namely space quantization of electronic angular momentum – was robust enough to transpire independent of whether the electronic angular momentum was orbital or due to spin. The SGE entails other key aspects of quantum mechanics such as quantum measurement, state preparation, coherence, and entanglement. Confronted with the outcome of the SGE, Stern noted: “I still have objections to the idea of beauty of quantum mechanics. But she is correct.”

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Enhanced sensitivity to ultralight bosonic dark matter in the spectra of the linear radical SrOH

Cited by 45 publications

References 107 publications

Ultracold $^{88}\rm{Sr}_2$ molecules in the absolute ground state

Ultracold $^{88}\rm{Sr}_2$ molecules in the absolute ground state

Magneto-Optical Trapping and Sub-Doppler Cooling of a Polyatomic Molecule

A Century Ago the Stern–Gerlach Experiment Ruled Unequivocally in Favor of Quantum Mechanics

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