4 papers
Achieving the Heisenberg limit using fault-tolerant quantum error correction
Himanshu Sahu, Qian Xu, Sisi Zhou
Quantum effect enables enhanced estimation precision in metrology, with the Heisenberg limit (HL) representing the ultimate limit allowed by quantum mechanics. Although the HL is g…
Quantum Error Corrected Non-Markovian Metrology
Zachary Mann, Ningping Cao, Raymond Laflamme +1
Quantum metrology aims to maximize measurement precision on quantum systems, with a wide range of applications in quantum sensing. Achieving the Heisenberg limit (HL) - the fundame…
Limitations of Gaussian measurements in quantum imaging
Yunkai Wang, Sisi Zhou
Imaging thermal sources naturally yields Gaussian states at the receiver, raising the question of whether Gaussian measurements can perform optimally in quantum imaging. In this wo…
Randomized measurements for multi-parameter quantum metrology
Sisi Zhou, Senrui Chen
The optimal quantum measurements for estimating different unknown parameters in a parameterized quantum state are usually incompatible with each other. Traditional approaches to ad…