\textit{In situ} certification of multiparticle indistinguishability in a generic interferometer
Abstract
We propose a scalable and efficient \textit{in situ} method for assessing the multiparticle indistinguishability of identical bosons or fermions in quantum interference experiments on linear interferometers by harnessing quantum parallelism and the bunching/anti-bunching tendencies of these particles. The proposed certification method can be applied to any generic linear interferometer. For particles occupying distinct input ports of a Haar-random unitary interferometer, the number of experimental runs required to attain a prescribed statistical precision is polynomial in the number of particles, the interferometer size, and the inverse precision, with high probability. Our method is robust under losses: for uniform particle losses, the polynomial scaling is preserved when the inverse single-particle survival probability is polynomially bounded. Our scheme is especially suitable for certifying the indistinguishability of single photons in large-scale interference experiments, such as Boson Sampling in the regime of quantum advantage over classical computation.
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BibTeX
@misc{shchesnovich2026textitin,
title = {{\textitIn situ certification of multiparticle indistinguishability in a generic interferometer}},
author = {Valery Shchesnovich},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.25471},
eprint = {2610.25471},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.25471},
}
RIS
TY - UNPB
TI - \textit{In situ} certification of multiparticle indistinguishability in a generic interferometer
AU - Valery Shchesnovich
PY - 2026
DA - 2026/10/18
PB - arXiv
DO - 10.48550/arxiv.2610.25471
UR - https://arxiv.org/abs/2610.25471
AB - We propose a scalable and efficient \textit{in situ} method for assessing the multiparticle indistinguishability of identical bosons or fermions in quantum interference experiments on linear interferometers by harnessing quantum parallelism and the bunching/anti-bunching tendencies of these particles. The proposed certification method can be applied to any generic linear interferometer. For particles occupying distinct input ports of a Haar-random unitary interferometer, the number of experimental runs required to attain a prescribed statistical precision is polynomial in the number of particles, the interferometer size, and the inverse precision, with high probability. Our method is robust under losses: for uniform particle losses, the polynomial scaling is preserved when the inverse single-particle survival probability is polynomially bounded. Our scheme is especially suitable for certifying the indistinguishability of single photons in large-scale interference experiments, such as Boson Sampling in the regime of quantum advantage over classical computation.
ER -