4 papers
Measurement-based quantum computation on weighted graph states with arbitrarily small weight
Tomohiro Yamazaki, Yuki Takeuchi
Weighted graph states are a natural generalization of graph states, which are generated by applying controlled-phase gates, instead of controlled-Z gates, to a separable state. In…
Existence of universal resource and uselessness of too entangled states for quantum metrology
Rina Miyajima, Yuki Takeuchi, Seiseki Akibue
We show (i) the existence of universal resource states for a certain class of linear Hamiltonians and (ii) the uselessness of highly entangled states for quantum metrology of linea…
Duality of extremal quantum states in verification and data hiding
Seiseki Akibue, Yuki Takeuchi
Quantum state verification (QSV) and quantum data hiding (QDH) have so far been studied separately. QSV decides whether a given quantum state is close to the ideal one, with signif…
Identification of Phase Plate Properties Using Photonic Quantum Sensor Networks
Yusuke Machida, Hiroki Kuji, Yuichiro Mori +5
Quantum sensor networks (QSNs) have been widely studied for their potential of precise measurements. While most QSN research has focused on estimating continuous variables, recent…