27 papers
Learning to Reconstruct Wigner Functions in Phase Space
Xinyu Tang, Yi-hsin Lin, Yan Zhu +5
Wigner function learning is a central tool for characterizing continuous variable quantum systems. A fundamental challenge in this setting is to infer a continuous phase-space func…
Quantum learning with a single-atom sensor
Yin Mo, Emilio Bagan, Giulio Chiribella
The ability to gather information and to act upon it is at the core of every learning agent. But what is the impact of quantum mechanics on an agent's ability to sense external inp…
Experimental violation of a Bell-like inequality for causal order
Yu Guo, Hao Tang, Bo-Xuan Wang +9
Quantum mechanics is compatible with scenarios where physical processes happen in an indefinite order. In theory, this feature could be detected through violations of inequalities…
On-Chip Quantum Randomness Amplification
Lang Li, Yutian Wu, Giulio Chiribella +1
Randomness amplification, the task of extracting uniform private bits from biased seeds that may be partly known by a malicious third party, is of central importance in cryptograph…
Bra-ket entanglement, an indicator bridging entanglement, magic, and coherence
Zhong-Xia Shang, Si-Yuan Chen, Wenjun Yu +2
Understanding the intricate interplay between distinct quantum resources is a fundamental prerequisite for rigorously characterizing the boundary between classical and quantum tech…
Quantum state determinability from local marginals is universally robust
Wenjun Yu, Fei Shi, Giulio Chiribella +1
A fundamental problem in quantum physics is to establish whether a multiparticle quantum state can be uniquely determined from its local marginals. In theory, this problem has been…