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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2604.21705 |
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| _version_ | 1866917431253925888 |
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| author | Dey, Suroj Barker, Peter Datta, Animesh |
| author_facet | Dey, Suroj Barker, Peter Datta, Animesh |
| contents | We show that detecting steady-state Coulomb-mediated reduction in the thermal variance of the differential motional mode of two nanospheres can bound the Continuous Spontaneous Localization (CSL) parameter ($λ_{\text{CSL}}$). For realistic experimental parameters, the resulting bounds are comparable to those obtained from X-ray emission experiments and surpass those set by bulk-heating ones. Unlike these latter experiments, our bounds are robust against plausible coloured-noise extensions of collapse models. In the short-time regime, we find that a weak Coulomb-induced entanglement-based test between two charged nanospheres initialized in ground state can provide constraints on $λ_{\text{CSL}}$ comparable to limits set by early X-ray experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_21705 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Testing Spontaneous Collapse Models with Coulomb Mediated Squeezing Dey, Suroj Barker, Peter Datta, Animesh Quantum Physics We show that detecting steady-state Coulomb-mediated reduction in the thermal variance of the differential motional mode of two nanospheres can bound the Continuous Spontaneous Localization (CSL) parameter ($λ_{\text{CSL}}$). For realistic experimental parameters, the resulting bounds are comparable to those obtained from X-ray emission experiments and surpass those set by bulk-heating ones. Unlike these latter experiments, our bounds are robust against plausible coloured-noise extensions of collapse models. In the short-time regime, we find that a weak Coulomb-induced entanglement-based test between two charged nanospheres initialized in ground state can provide constraints on $λ_{\text{CSL}}$ comparable to limits set by early X-ray experiments. |
| title | Testing Spontaneous Collapse Models with Coulomb Mediated Squeezing |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2604.21705 |