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    Traversability dynamics of a minimal wormhole-inspired teleportation protocol with a PT-symmetric non-Hermitian deformation

    Sudhanva Joshi* and Sunil Kumar Mishra†

    • *Contact author: sudhanvajoshi.rs.phy24@itbhu.ac.in
    • †Contact author: sunilkm.app@iitbhu.ac.in

    Phys. Rev. A 113, 062419 – Published 5 June, 2026

    DOI: https://doi.org/10.1103/dxby-2vw3

    Abstract

    Holography-inspired teleportation has recently emerged as a significant area of research in quantum many-body systems. In this work, we investigate the effects of PT-symmetric nonunitary deformations on the traversability of the wormhole-inspired teleportation protocol modeled by coupled Sachdev-Ye-Kitaev (SYK) systems prepared in a thermofield double state bath. By introducing balanced gain and loss terms to the boundary Hamiltonians, we identify a phase transition driven by spectral exceptional points, where the real energy eigenvalues of the effective Hamiltonian coalesce and bifurcate into complex-conjugate pairs. We demonstrate that the PT-broken phase acts as an amplifier, enabling exponential growth in the norm of the teleported signal while preserving the causal time window for the wormhole's traversability. A statistical study of disorder realizations reveals that the critical non-Hermiticity threshold γc follows a log-normal distribution, reflecting the sensitivity of the transition to the microscopic level spacing of the chaotic SYK spectrum. Furthermore, we observe a “purification” effect deep in the broken phase, where the teleportation channel acts as an entanglement distiller, yielding near-perfect teleportation fidelity for postselected states. Our results suggest that the non-Hermitian topology can be harnessed to enhance holographic quantum communication, providing a robust mechanism for signal amplification in noisy, minimal quantum many-body systems.

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