PreprintCC BY 4.0arXiv
Photon echo from Maki-Thompson interference in a fluctuating s-wave superconductor
Abstract
We study theoretically the nonlinear optical response of a fluctuating s-wave superconductor driven by two successive terahertz pulses. We show that the response exhibits a photon echo signal that arises from the quantum interference between the time-reversed electron and hole trajectories in the Maki-Thompson process. By contrast, the transport of the fluctuating Cooper pairs responsible for the Aslamazov-Larkin conductivity does not generate an echo. The photon echo signal can be readily measured using terahertz two-dimensional coherent spectroscopy, highlighting its potential to distinguish different fluctuation conductivity mechanisms.
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BibTeX
@misc{zhou2026photon,
title = {{Photon echo from Maki-Thompson interference in a fluctuating s-wave superconductor}},
author = {Hui Zhou and Yuan Wan},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.16462},
eprint = {2610.16462},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.16462},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Photon echo from Maki-Thompson interference in a fluctuating s-wave superconductor
AU - Hui Zhou
AU - Yuan Wan
PY - 2026
DA - 2026/10/12
PB - arXiv
DO - 10.48550/arxiv.2610.16462
UR - https://arxiv.org/abs/2610.16462
AB - We study theoretically the nonlinear optical response of a fluctuating s-wave superconductor driven by two successive terahertz pulses. We show that the response exhibits a photon echo signal that arises from the quantum interference between the time-reversed electron and hole trajectories in the Maki-Thompson process. By contrast, the transport of the fluctuating Cooper pairs responsible for the Aslamazov-Larkin conductivity does not generate an echo. The photon echo signal can be readily measured using terahertz two-dimensional coherent spectroscopy, highlighting its potential to distinguish different fluctuation conductivity mechanisms.
ER -