Yoshihiro Ueda

Quantum network sensing has a potential to enhance the estimation precision of multiple distributed parameters. In this context, several papers recently considered privacy of local parameters of such sensing. However, it is known that some kinds of noises such as bit-flip noise affect the privacy. In this work, we propose a private quantum network sensing scheme using an efficient photon-number GHZ state distribution protocol for the linear combination of local parameters in a lossy network. We show that our protocol using the photon-number GHZ states satisfies the privacy condition in the noisy distribution environment.