148 citations · 1.1k across the 67 of their papers we have counts for
6 papers · 1 filter
Quantum Metrology with Indefinite Causal Order
Xiaobin Zhao, Yuxiang Yang, Giulio Chiribella
We address the study of quantum metrology enhanced by indefinite causal order, demonstrating a quadratic advantage in the estimation of the product of two average displacements in…
Quantum state estimation with nuisance parameters
Jun Suzuki, Yuxiang Yang, Masahito Hayashi
In parameter estimation, nuisance parameters refer to parameters that are not of interest but nevertheless affect the precision of estimating other parameters of interest. For inst…
Fundamental energy requirement of reversible quantum operations
Giulio Chiribella, Yuxiang Yang, Renato Renner
Landauer's principle asserts that any computation has an unavoidable energy cost that grows proportionally to its degree of logical irreversibility. But even a logically reversible…
Accuracy enhancing protocols for quantum clocks
Yuxiang Yang, Lennart Baumgärtner, Ralph Silva +1
The accuracy of the time information generated by clocks can be enhanced by allowing them to communicate with each other. Here we consider a basic scenario where a quantum clock re…
Memory effects in quantum metrology
Yuxiang Yang
Quantum metrology concerns estimating a parameter from multiple identical uses of a quantum channel. We extend quantum metrology beyond this standard setting and consider estimatio…
Quantum Compression of Tensor Network States
Ge Bai, Yuxiang Yang, Giulio Chiribella
We design quantum compression algorithms for parametric families of tensor network states. We first establish an upper bound on the amount of memory needed to store an arbitrary st…