Quantum control of molecules for fundamental physics

Mitra, Debayan; Leung, Kon H.; Zelevinsky, Tanya

doi:10.1103/physreva.105.040101

Cited by 38 publications

(12 citation statements)

References 237 publications

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“…Ultimately, this will trigger a new generation of low-temperature precision spectroscopy studies, of relevance both for the aforementioned fundamental Physics researches and for the identification of more efficient laser cooling schemes towards the achievement of quantum degeneracy in molecular systems [40].…”

Section: Discussionmentioning

confidence: 99%

Absolute frequency metrology of buffer-gas-cooled molecular spectra at the 10-12 accuracy level

Aiello

Sarno

Santi

et al. 2022

Preprint

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By reducing both the internal and translational temperature of any species down to a few kelvins, the buffer-gas-cooling (BGC) technique has the potential to dramatically improve the quality of ro-vibrational molecular spectra, thus offering unique opportunities for transition frequency measurements with unprecedented accuracy. However, the difficulty in integrating metrological-grade spectroscopic tools into bulky cryogenic equipment has hitherto prevented from approaching the kHz level even in the best cases. Here, we overcome this drawback by an original opto-mechanical scheme which, effectively coupling a Lamb-dip saturated-absorption cavity ring-down spectrometer to a BGC source, allows us to determine the absolute frequency of the acetylene (ν1+ν3) R(1)e transition at 6561.0941 cm-1 with a fractional uncertainty as low as 6∙10-12. By improving the previous record with buffer-gas-cooled molecules by one order of magnitude, our approach paves the way for a number of ultra-precise low-temperature spectroscopic studies, aimed at both fundamental Physics tests and optimized laser cooling strategies.

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Section: Discussionmentioning

confidence: 99%

Absolute frequency metrology of buffer-gas-cooled molecular spectra at the 10-12 accuracy level

Aiello

Sarno

Santi

et al. 2022

Preprint

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“…Such lattice clocks, so far employing atomic optical transitions, have realized record performance in both precision [7][8][9][10][11][12] and accuracy [11][12][13][14][15][16][17], ushering in a new era in space-time sensing [18][19][20][21]. In parallel, there is growing interest in advancing the laser spectroscopy and quantum control of more complex particles-such as diatomic or polyatomic molecules with rich rovibrational structure-motivated by fundamental physics applications [22,23] that include the search for particles beyond the Standard Model [24][25][26][27][28][29], fifth forces [30][31][32], the time variation of the electron-to-proton mass ratio [33][34][35][36], and dark matter [37,38]. Molecules also hold promise as new platforms for quantum computation and simulation [39][40][41][42][43][44][45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

A terahertz vibrational molecular clock with systematic uncertainty at the $10^{-14}$ level

Leung¹,

Iritani²,

Tiberi³

et al. 2022

Preprint

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Neutral quantum absorbers in optical lattices have emerged as a leading platform for achieving clocks with exquisite spectroscopic resolution. However, the class of absorbers and studies of systematic shifts in these clocks have so far been limited to atoms. Here, we extend this architecture to an ensemble of diatomic molecules and experimentally realize an accurate lattice clock based on pure molecular vibration. We evaluate the leading systematics, including the characterization of nonlinear trap-induced light shifts, achieving a total systematic uncertainty of 4.5 × 10 −14 . The absolute frequency of the vibrational splitting is measured to be 31 825 183 207 601.1(3.3) Hz, enabling the dissociation energy of our molecule to be determined with record accuracy. Our results represent an important milestone in molecular spectroscopy, THz frequency standards, and may be generalized to other neutral molecular species with applications for fundamental physics, including tests of molecular quantum electrodynamics and the search for new interactions.

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“…Cold polar molecules are an excellent platform for quantum control with applications ranging from fundamental physics [1,2] and quantum information [3][4][5] to cold chemistry [6]. The ability to detect the molecules, ideally at the single molecule level and in a non-destructive and state-resolved fashion, is a prerequisite to any such application.…”

mentioning

confidence: 99%

Rydberg atom-enabled spectroscopy of polar molecules via Förster resonance energy transfer

Patsch,

Zeppenfeld,

Koch

2022

Preprint

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Non-radiative energy transfer between a Rydberg atom and a polar molecule can be controlled by a DC electric field. Here we show how to exploit this control for state-resolved, non-destructive detection and spectroscopy of the molecules where the lineshape reflects the type of molecular transition. Using the example of ammonia, we identify the conditions for collision-mediated spectroscopy in terms of the required electric field strengths, relative velocities, and molecular densities. Rydberg atom-enabled spectroscopy is feasible with current experimental technology, providing a versatile detection method as basic building block for applications of polar molecules in quantum technologies and chemical reaction studies.

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Quantum control of molecules for fundamental physics

Cited by 38 publications

References 237 publications

Absolute frequency metrology of buffer-gas-cooled molecular spectra at the 10-12 accuracy level

Absolute frequency metrology of buffer-gas-cooled molecular spectra at the 10-12 accuracy level

A terahertz vibrational molecular clock with systematic uncertainty at the $10^{-14}$ level

Rydberg atom-enabled spectroscopy of polar molecules via Förster resonance energy transfer

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