Geometry-Controlled Freezing and Revival of Bell Nonlocality through Environmental Memory

• URL: http://arxiv.org/abs/2508.07046v1
• Date: Sat, 09 Aug 2025 17:08:03 GMT
• Title: Geometry-Controlled Freezing and Revival of Bell Nonlocality through Environmental Memory
• Authors: Mohamed Hatifi,
• Abstract summary: We show that the distance between two qubits coupled to a structured reservoir acts as a single geometric control that can store, revive, or suppress Bell nonlocality.<n>Results rely on analytically solvable models and are compatible with current superconducting and nanophotonic platforms.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We show that the distance between two qubits coupled to a structured reservoir acts as a single geometric control that can store, revive, or suppress Bell nonlocality. In a mirror-terminated guide, quantum correlations lost to the bath return at discrete recurrence times, turning a product state into a Bell-violating one without any entangling drive (only local basis rotations/readout). In the continuum limit, we derive closed-form criteria for the emergence of nonlocality from backflow, and introduce a Bell-based analogue of the BLP measure to quantify this effect. We also show how subwavelength displacements away from a decoherence-free node quadratically reduce the lifetime of a dark state or bright state, enabling highly sensitive interferometric detection. All results rely on analytically solvable models and are compatible with current superconducting and nanophotonic platforms, offering a practical route to passive, geometry-controlled non-Markovian devices.

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