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Qubit Coherence Noise Stability Characterization

Is the Conventional Picture of Coherence Time Complete? Dark Matter Recoherence

arXiv
Authors: Chaitanya Paranjape, Gilad Perez, Wolfram Ratzinger, Somasundaram Sankaranarayanan

Year

2026

Paper ID

4289

Status

Preprint

Abstract Read

~2 min

Abstract Words

90

Citations

N/A

Abstract

The local solar gravitational potential forms a basin for ultralight dark matter (ULDM), with discrete energy levels. Even if barely populated, it introduces a new characteristic timescale in DM dynamics. This necessitates a generalization of the notion of coherence time. We find that, at long times, the phenomenon of recoherence emerges, whereby a subcomponent of ULDM exhibits a formally divergent coherence time. The fact that this generalized coherence time can significantly exceed the naive estimate implies an enhanced sensitivity for dark matter searches that accumulate data over extended observation periods.

Why This Paper Matters

  • This paper contributes to the Qubit Coherence, Noise & Stability Characterization research area in the Quantum Articles archive.
  • It adds a 2026 reference point for readers tracking recent quantum research.
  • The local solar gravitational potential forms a basin for ultralight dark matter (ULDM), with discrete energy levels.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2601.00955 [2] arXiv https://arxiv.org/abs/2601.00955 [3] Publisher https://arxiv.org/abs/2601.00955

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