Non-Markovian Multiphoton Chiral Dynamics with Giant Systems

• URL: http://arxiv.org/abs/2407.05672v2
• Date: Tue, 09 Sep 2025 09:15:21 GMT
• Title: Non-Markovian Multiphoton Chiral Dynamics with Giant Systems
• Authors: Yue Chang,
• Abstract summary: We study the non-Markovian multiphoton regime in a giant nonlinear system nonlocally coupled to a one-dimensional waveguide.<n>We show that single-photon transport remains reciprocal, but multiphoton dynamics become chiral.<n>We uncover nonreciprocal dissipative phase transitions and demonstrate how non-Markovianity shapes the critical response.
• Score: 3.950340390752244
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Chiral interactions enable directional control of quantum light, providing new routes for nonreciprocal photon dynamics. While previous studies focused on single photon regimes, this work explores the non-Markovian multiphoton regime in a giant nonlinear system nonlocally coupled to a one-dimensional waveguide, with a tunable phase difference breaking parity symmetry. We show that single-photon transport remains reciprocal, but multiphoton dynamics become chiral, generating direction-dependent higher-order correlations and enabling deterministic creation of multiphoton states with nontrivial statistics from a single input direction, even under strong dissipation. The non-Markovian nature allows tuning of transmitted photon statistics via the coupling-point separation. At a specific phase, internal dynamics become Markovian while output photons retain non-Markovian features. Under strong coherent driving, we uncover nonreciprocal dissipative phase transitions and demonstrate how non-Markovianity shapes the critical response. This framework offers a general strategy for controlling chiral multiphoton dynamics in nonlocally coupled waveguide QED systems.

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