Gaussian quantum data hiding
Abstract
Quantum data hiding encodes a hidden classical bit to a pair of quantum states that is difficult to distinguish using a particular set of measurement, denoted as . In this work, we explore quantum data hiding in two contexts involving Gaussian operations or states. First, we consider the set of measurement as Gaussian local quantum operations and classical communication, a new set of operations not previously discussed in the literature for data hiding. We hide one classical bit in the two different mixture of displaced two-mode squeezed states. Second, we consider the set of measurement as general Gaussian measurement and construct the data hiding states using two-mode thermal states. This data hiding scheme is effective in the weak strength limit, providing a new example compared to existing discussions for the set of general Gaussian measurement.
Cite
@article{arxiv.2502.00670,
title = {Gaussian quantum data hiding},
author = {Yunkai Wang and Graeme Smith},
journal= {arXiv preprint arXiv:2502.00670},
year = {2025}
}