29 citations · 29 across the 2 of their papers we have counts for
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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…
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…