Coulomb squeezing of two nanospheres' differential motional mode can bound the CSL parameter λ_CSL at levels comparable to X-ray tests and robust against colored-noise extensions.
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Direct use of mechanical qubits from levitated particles for gravimetry achieves m^{-1/2} sensitivity scaling and 0.1 μGal/√Hz performance, outperforming traditional schemes by two orders of magnitude while reaching double standard quantum limits.
Phase-locked phonon laser in levitated nanoparticles reduces force noise to 4.0(3)×10^{-22} N/√Hz, achieves 12,500 s coherence, and delivers 8(4)×10^{-24} N resolution.
citing papers explorer
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Testing Spontaneous Collapse Models with Coulomb Mediated Squeezing
Coulomb squeezing of two nanospheres' differential motional mode can bound the CSL parameter λ_CSL at levels comparable to X-ray tests and robust against colored-noise extensions.
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Quantum gravimetry with mechanical qubits
Direct use of mechanical qubits from levitated particles for gravimetry achieves m^{-1/2} sensitivity scaling and 0.1 μGal/√Hz performance, outperforming traditional schemes by two orders of magnitude while reaching double standard quantum limits.
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Phase-locked phonon laser enhanced ultra-weak force measurement
Phase-locked phonon laser in levitated nanoparticles reduces force noise to 4.0(3)×10^{-22} N/√Hz, achieves 12,500 s coherence, and delivers 8(4)×10^{-24} N resolution.