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Yamamoto, K., Nakagawa, M., Adachi, K., Takasan, K., Ueda, M. and Kawakami, N. (2019) Theory of Non-Hermitian Fermionic Superfluidity with a Complex-Valued Interaction. Physical Review Letters, 123, Article 123601.
https://doi.org/10.1103/physrevlett.123.123601

has been cited by the following article:

• TITLE: Configuration-Dependent Complex Time in Delayed-Choice Interferometry

  AUTHORS: Gaël Ronsyn

  KEYWORDS: Delayed-Choice Experiment, Coherence, Imaginary Time, Dephasing, Temporal CHSH

  JOURNAL NAME: Journal of Quantum Information Science, Vol.16 No.2, June 23, 2026

  ABSTRACT: We introduce a configuration-dependent parametrisation of coherence in Wheeler’s delayed-choice experiment based on the complex quantity T=t?iτ . The real component t retains its usual causal role, while the imaginary component τ encodes the attenuation of coherence without representing a physical time coordinate or an additional degree of freedom. Different interferometric configurations correspond to different decompositions of T , effectively acting as an internal rotation that modifies the imaginary-time difference between paths and therefore the visibility. This mechanism alters coherence without affecting causal evolution and does not require retrocausality. The construction is fully compatible with standard quantum mechanics: it preserves unitary evolution, the Born rule, and the structure of completely positive trace-preserving (CP-TP) maps, and is equivalent to a standard dephasing channel written in a compact parametrised form. The framework yields experimentally testable predictions for visibility modulation and temporal correlations, including a temporal CHSH protocol that departs from classical bounds through the configuration dependence of Δτ rather than through any modification of the underlying dynamics.