Evaluating the quantum Ziv-Zakai bound in noisy environments

Understand

In the highly non-Gaussian regime, the quantum Ziv-Zakai bound (QZZB) provides a lower bound on the available precision, demonstrating the better performance compared with the quantum Cram\'er-Rao bound.

• However, evaluating the impact of a noisy environment on the QZZB without applying certain approximations proposed by Tsang [Phys.
• Rev.
• Lett.