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16 papers · 2 filters
Characterization of exact one-query quantum algorithms
Weijiang Chen, Zekun Ye, Lvzhou Li
The quantum query models is one of the most important models in quantum computing. Several well-known quantum algorithms are captured by this model, including the Deutsch-Jozsa alg…
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…
Resource theories of communication
Hlér Kristjánsson, Giulio Chiribella, Sina Salek +2
A series of recent works has shown that placing communication channels in a coherent superposition of alternative configurations can boost their ability to transmit information. In…
Application of the Resource Theory of Channels to Communication Scenarios
Ryuji Takagi, Kun Wang, Masahito Hayashi
We introduce a resource theory of channels relevant to communication via quantum channels, in which the set of constant channels --- useless channels for communication tasks --- is…
Device-independent verification of Einstein-Podolsky-Rosen steering
Yuan-Yuan Zhao, Chao Zhang, Shuming Cheng +10
Entanglement lies at the heart of quantum mechanics, and has been identified an essential resource for diverse applications in quantum information. If entanglement could be verifie…
Landau-Zener-Stückelberg Interferometry in -symmetric Non-Hermitian models
Xin Shen, Fudong Wang, Zhi Li +1
We systematically investigate the non-Hermitian generalisations of the Landau-Zener (LZ) transition and the Landau-Zener-Stückelberg (LZS) interferometry. The LZ transition probabi…