29 citations · 29 across the 2 of their papers we have counts for
5 papers
Efficient Distinction between Quantum Direct and Common Causes and its Experimental Verification
Feixiang Xu, Jia-Yi Lin, Ben Wang +4
Identifying the causal structures between two statistically correlated events has been widely investigated in many fields of science. While some of the well-studied classical metho…
Experimental Quantum Target Detection Approaching the Fundamental Helstrom Limit
Feixiang Xu, Xiao-Ming Zhang, Liang Xu +3
Quantum target detection is an emerging application that utilizes entanglement to enhance the sensing of the presence of an object. Although several experimental demonstrations for…
High-fidelity, low-latency polarization quantum state transmissions over a hollow-core conjoined-tube fibre at around 800 nm
Xin-Yu Chen, Wei Ding, Ying-Ying Wang +8
The performances of optical fibre-based quantum information systems are limited by the intrinsic properties of silica glass materials, e.g. high latency, Rayleigh-scattering loss w…
Experimental quantification of coherence of a tunable quantum detector
Huichao Xu, Feixiang Xu, Thomas Theurer +5
Quantum coherence is a fundamental resource that quantum technologies exploit to achieve performance beyond that of classical devices. A necessary prerequisite to achieve this adva…
Adaptive tomography of qubits: Purity versus statistical fluctuations
Aonan Zhang, Yujie Zhang, Feixiang Xu +2
The success of quantum information processing applications relies on accurate and efficient characterization of quantum states, especially nearly-pure states. In this work, we inve…