Opticlock: Transportable and easy-to-operate optical single-ion clock

Stühler, J.; Hafiz, Moustafa Abdel; Arar, Bassem; Bawamia, Ahmad; Bergner, Klaus; Biethahn, Maximilian; Brakhane, Stefan; Alexandre, Didier; Fortágh, József; Halder, Matthaus; Holzwarth, Ronald; Huntemann, N.; Johanning, M.; Jördens, Robert; Kaenders, Wilhelm; Karlewski, Florian; Kienle, Florian; Krutzik, Markus; Lessing, Maurice; Meschede, Dieter; Peik, E.; Peters, A.; Schmidt, Piet O.; Siebeneich, Hendrik; Tamm, Chr.; Vogt, Enrico; Wicht, Andreas; Wunderlich, Christof; Yu, Jialiang

doi:10.1016/j.measen.2021.100264

Cited by 24 publications

(14 citation statements)

References 1 publication

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“…Much larger values of N were recently demonstrated for lattice clocks [86]. Development of multi-ion clocks is in progress [87,89].…”

Section: Atomic Molecular and Nuclear Clocksmentioning

confidence: 98%

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SpaceQ -- Direct Detection of Ultralight Dark Matter with Space Quantum Sensors

Tsai¹,

Eby²,

Safronova³

2021

Preprint

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Recent advances in quantum sensors, including atomic clocks, enable searches for a broad range of dark matter candidates. The question of the dark matter distribution in the Solar system critically affects the reach of dark matter direct detection experiments. Partly motivated by the NASA Deep Space Atomic Clock (DSAC), we show that space quantum sensors present new opportunities for ultralight dark matter searches, especially for dark matter states bound to the Sun. We show that space quantum sensors can probe unexplored parameter space of ultralight dark matter, covering theoretical relaxion targets motivated by naturalness and Higgs mixing. If an atomic clock were able to make measurements on the interior of the solar system, it could probe this highly sensitive region directly and set very strong constraints on the existence of such a bound-state halo in our solar system. We present sensitivity projections for space-based probes of ultralight dark matter which couples to electron, photon, and gluon fields, based on current and future atomic, molecular, and nuclear clocks.

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“…Much larger values of N were recently demonstrated for lattice clocks [86]. Development of multi-ion clocks is in progress [87,89].…”

Section: Atomic Molecular and Nuclear Clocksmentioning

confidence: 98%

“…There is no apparent technical limit to significant further improvement of the optical clocks [86]. Portable high-precision optical clocks were also demonstrated [87,88].…”

Section: Atomic Molecular and Nuclear Clocksmentioning

confidence: 99%

SpaceQ -- Direct Detection of Ultralight Dark Matter with Space Quantum Sensors

Tsai¹,

Eby²,

Safronova³

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Much larger values of N were recently demonstrated for lattice clocks [96]. Development of multi-ion clocks is in progress [97,99].…”

Section: Atomic Molecular and Nuclear Clocksmentioning

confidence: 99%

SpaceQ -- Direct Detection of Ultralight Dark Matter with Space Quantum Sensors

Tsai¹,

Eby²,

Safronova³

2022

Preprint

View full text Add to dashboard Cite

Recent advances in quantum sensors, including atomic clocks, enable searches for a broad range of dark matter candidates. The question of the dark matter distribution in the Solar system critically affects the reach of dark matter direct detection experiments. Partly motivated by the NASA Deep Space Atomic Clock (DSAC) and the Parker Solar Probe (PSP), we show that space quantum sensors present new opportunities for ultralight dark matter searches, especially for dark matter states bound to the Sun. We show that space quantum sensors can probe unexplored parameter space of ultralight dark matter, covering theoretical relaxion targets motivated by naturalness and Higgs mixing. If an atomic clock were able to make measurements on the interior of the solar system, it could probe this highly sensitive region directly and set very strong constraints on the existence of such a bound-state halo in our solar system. We present sensitivity projections for space-based probes of ultralight dark matter which couples to electron, photon, and gluon fields, based on current and future atomic, molecular, and nuclear clocks.

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“…Thus, developing a transportable optical clock (TOC) with sufficient robustness and compactness is an effective solution for outdoor applications. At present, various institutions around the world are actively developing TOCs using different atomic references, [22][23][24][25][26][27] and some demonstrations on relativistic geodesy and test of the theory of GR have been reported now. [22,23] The 40 Ca + single-ion confined in an ion trap, due to its easy-to-acquired semiconductor lasers, is a promising option in the development of robust and compact TOCs.…”

Section: Introductionmentioning

confidence: 99%

Laboratory demonstration of geopotential measurement using transportable optical clocks

et al. 2023

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We report an experimental demonstration of geopotential difference measurement using a pair of transportable 40Ca+ optical clocks (TOC-729-1 and TOC-729-3) in the laboratory, each of them with an uncertainty of 1.3 × 10-17 and an instability of 4.8 × 10-15/ √ τ, respectively. Referenced to a stationary clock of TOC-729-1, geopotential difference measurements are realized by moving TOC-729-3 to three different locations and the relevant altitude differences are measured with uncertainties at the level of 20 cm. After correcting the systematic shifts (including gravitational red shift), these two-clock frequency difference is measured to be -0.7(2.2) × 10-17, considering both the statistic (1.0 × 10-17) and the systematic (1.9 × 10-17) uncertainty. The frequency difference between these two clocks is within their respective uncertainties, verifying the reliability of transportable 40Ca+ optical clocks at the low level of 10-17.

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Opticlock: Transportable and easy-to-operate optical single-ion clock

Cited by 24 publications

References 1 publication

SpaceQ -- Direct Detection of Ultralight Dark Matter with Space Quantum Sensors

SpaceQ -- Direct Detection of Ultralight Dark Matter with Space Quantum Sensors

SpaceQ -- Direct Detection of Ultralight Dark Matter with Space Quantum Sensors

Laboratory demonstration of geopotential measurement using transportable optical clocks

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