8 papers
Quantum-Limited Distance Estimation in Three-Dimensional Optical Superresolution
Junyan Li, Shengshi Pang
Quantum superresolution reveals that the vanishing of separation sensitivity in conventional imaging below the Rayleigh limit does not necessarily indicate a fundamental loss of in…
Optimal quantum superresolution for full distance between incoherent optical sources in two dimensions
Junyan Li, Shengshi Pang
The Rayleigh criterion has long served as a fundamental limit for the resolution of optical imaging. Recent advances in multiparameter quantum metrology have led to quantum superre…
Efficient adaptive control strategy for multi-parameter quantum metrology in two-dimensional systems
Qifei Wei, Shengshi Pang
Quantum metrology leverages quantum resources such as entanglement and squeezing to enhance parameter estimation precision beyond classical limits. While optimal quantum control st…
Floquet Diamond Sensor with Optimal Precision
Qi-Tao Duan, Teng Li, Si-Qi Chen +2
The diamond sensor has emerged as a promising platform for quantum sensing, enabling the estimation of physical quantities -- such as microwave~(MW) field -- with precision unattai…
Two measurement bases are asymptotically informationally complete for any pure state tomography
Tianfeng Feng, Tianqi Xiao, Yu Wang +6
One of the fundamental questions in quantum information theory is to find how many measurement bases are required to obtain the full information of a quantum state. While a minimum…
Achieving Heisenberg scaling by probe-ancilla interaction in quantum metrology
Jingyi Fan, Shengshi Pang
The Heisenberg scaling is an ultimate precision limit of parameter estimation allowed by the principles of quantum mechanics, with no counterpart in the classical realm, and has be…