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作者:Yuichiro Matsuzaki , Victor M. Bastidas ...
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2020, Vol.89 (4)
摘要:In many quantum information processing applications, it is important to be able to transfer a quantum state from one location to another — even within a local device. Typical approaches to implement the quantum state transfer rely on unitary evolutions or measurement feedfor...
作者:Yuichiro Matsuzaki , Hirotaka Tanaka
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2016, Vol.85 (1)
摘要:We theoretically propose a scheme for the verification of the quantum Zeno effect (QZE) to suppress a decay process with nuclear magnetic resonance (NMR). Nuclear spins are affected by low-frequency noise, and thus we can naturally observe non exponential decay behavior, which is...
作者:Yuichiro Matsuzaki , Tatsuya Baba ...
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2016, Vol.85 (10)
摘要:Quantum measurements play a central role in quantum information processing. Understanding the mechanism of the quantum measurements is essential to both improve the visibility of the readout and decrease the projection error during measurement. Here, we describe and demonstrate a...
作者:Yuichiro Matsuzaki , William J. Munro ...
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2015, Vol.84 (10)
摘要:A long-lived qubit is usually well-isolated from all other systems and the environments, and so is not easy to couple with measurement apparatus. It is sometimes difficult to implement reliable projective measurements on such a qubit. One potential solution is spin amplification ...
作者:Akira Shimizu , Yuichiro Matsuzaki , Akihisa Ukena
来源:[J].Journal of the Physical Society of Japan(IF 2.087), 2013, Vol.82 (5)
摘要:For quantum computation, we investigate the conjecture that the superposition of macroscopically distinct states is necessary for a large quantum speedup. Although this conjecture was supported for a circuit-based quantum computer performing Shor's factoring algorithm [A. Ukena a...

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