Hunting for Dark Matter with Atomic Clocks in Space
![Sensitivity projections for detecting dark matter interactions, achieved through comparisons between space- and ground-based clocks, demonstrate that missions like ACES, those operating on the International Space Station, and the proposed FOCOS mission can probe a range of dark matter masses-extending beyond current bounds established by MICROSCOPE, SNG, and BBN-with sensitivity limited by factors such as atmospheric reflection, satellite shielding, and the breakdown of low-momentum approximations at higher masses, as determined by fractional phase and frequency uncertainties of [latex]\delta t / \Delta t = 7 \times 10^{-{17}}[/latex] and stability parameters of [latex]\sigma_{y}(10^{6})[/latex] and [latex]\sigma_{y}(10^{7})[/latex].](https://arxiv.org/html/2601.16259v1/x6.png)
A new approach proposes leveraging the precision of orbiting quantum clocks to detect the elusive influence of ultralight dark matter on the fabric of spacetime.
![Sensitivity projections for detecting dark matter interactions, achieved through comparisons between space- and ground-based clocks, demonstrate that missions like ACES, those operating on the International Space Station, and the proposed FOCOS mission can probe a range of dark matter masses-extending beyond current bounds established by MICROSCOPE, SNG, and BBN-with sensitivity limited by factors such as atmospheric reflection, satellite shielding, and the breakdown of low-momentum approximations at higher masses, as determined by fractional phase and frequency uncertainties of [latex]\delta t / \Delta t = 7 \times 10^{-{17}}[/latex] and stability parameters of [latex]\sigma_{y}(10^{6})[/latex] and [latex]\sigma_{y}(10^{7})[/latex].](https://arxiv.org/html/2601.16259v1/x6.png)
A new approach proposes leveraging the precision of orbiting quantum clocks to detect the elusive influence of ultralight dark matter on the fabric of spacetime.

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A new analysis of global quantum strategies reveals a clear pivot from basic research to practical applications and economic development.

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