Search Results - "YUASA, Kazuya"

Optimal Gaussian metrology for generic multimode interferometric circuit by Matsubara, Teruo, Facchi, Paolo, Giovannetti, Vittorio, Yuasa, Kazuya

“…Bounds on the ultimate precision attainable in the estimation of a parameter in Gaussian quantum metrology are obtained when the average number of bosonic…”
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Unification of random dynamical decoupling and the quantum Zeno effect by Hahn, Alexander, Burgarth, Daniel, Yuasa, Kazuya

“…Abstract Periodic deterministic bang–bang dynamical decoupling and the quantum Zeno effect are known to emerge from the same physical mechanism. Both concepts…”
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One bound to rule them all: from Adiabatic to Zeno by Burgarth, Daniel, Facchi, Paolo, Gramegna, Giovanni, Yuasa, Kazuya

“…We derive a universal nonperturbative bound on the distance between unitary evolutions generated by time-dependent Hamiltonians in terms of the difference of…”
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Generalized Adiabatic Theorem and Strong-Coupling Limits by Burgarth, Daniel, Facchi, Paolo, Nakazato, Hiromichi, Pascazio, Saverio, Yuasa, Kazuya

“…We generalize Kato's adiabatic theorem to nonunitary dynamics with an isospectral generator. This enables us to unify two strong-coupling limits: one driven by…”
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Exponential rise of dynamical complexity in quantum computing through projections by Burgarth, Daniel Klaus, Facchi, Paolo, Giovannetti, Vittorio, Nakazato, Hiromichi, Pascazio, Saverio, Yuasa, Kazuya

“…The ability of quantum systems to host exponentially complex dynamics has the potential to revolutionize science and technology. Therefore, much effort has…”
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Uncertainty relations in the framework of equalities by Ozawa, Tohru, Yuasa, Kazuya

“…We study the Schrödinger–Robertson uncertainty relations in an algebraic framework. Moreover, we show that some specific commutation relations imply new…”
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Quantum estimation via sequential measurements by Burgarth, Daniel, Giovannetti, Vittorio, Kato, Airi N, Yuasa, Kazuya

“…The problem of estimating a parameter of a quantum system through a series of measurements performed sequentially on a quantum probe is analyzed in the general…”
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Quantum Zeno Dynamics from General Quantum Operations by Burgarth, Daniel, Facchi, Paolo, Nakazato, Hiromichi, Pascazio, Saverio, Yuasa, Kazuya

“…We consider the evolution of an arbitrary quantum dynamical semigroup of a finite-dimensional quantum system under frequent kicks, where each kick is a generic…”
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Strong error bounds for Trotter and strang-splittings and their implications for quantum chemistry by Burgarth, Daniel, Facchi, Paolo, Hahn, Alexander, Johnsson, Mattias, Yuasa, Kazuya

“…Efficient error estimates for the Trotter product formula are central in quantum computing, mathematical physics, and numerical simulations. However, the…”
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Central charge in quantum optics by Burgarth, Daniel, Facchi, Paolo, Nakazato, Hiromichi, Pascazio, Saverio, Yuasa, Kazuya

“…The product of two unitaries can normally be expressed as a single exponential through the famous Baker-Campbell-Hausdorff formula. We present here a…”
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Interference in a two-mode Bose system as a typical phenomenon by Facchi, Paolo, Nakazato, Hiromichi, Pascazio, Saverio, Pepe, Francesco V., Yuasa, Kazuya

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Interference of Cooper pairs emitted from independent superconductors by Iazzi, Mauro, Yuasa, Kazuya

“…We discuss the interference in the two-particle distribution of the electrons emitted from two independent superconductors. It is clarified that, while the…”
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Efficient generation of a maximally entangled state by repeated on- and off-resonant scattering of ancilla qubits by Yuasa, Kazuya, Burgarth, Daniel, Giovannetti, Vittorio, Nakazato, Hiromichi

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Classical to quantum in large-number limit by Modi, Kavan, Fazio, Rosario, Pascazio, Saverio, Vedral, Vlatko, Yuasa, Kazuya

“…We construct a quantumness witness following the work of Alicki & van Ryn (AvR). We reformulate the AvR test by defining it for quantum states rather than for…”
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Purification through Zeno-like measurements by Nakazato, Hiromichi, Takazawa, Tomoko, Yuasa, Kazuya

“…A series of frequent measurements on a quantum system (Zeno-like measurements) is shown to result in the "purification" of another quantum system in…”
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Generation of multipartite entangled states in Josephson architectures by Migliore, Rosanna, Yuasa, Kazuya, Nakazato, Hiromichi, Messina, Antonino

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Quantum system identification by Burgarth, Daniel, Yuasa, Kazuya

“…The aim of quantum system identification is to estimate the ingredients inside a black box, in which some quantum-mechanical unitary process takes place, by…”
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Diffusion and transfer of entanglement in an array of inductively coupled flux qubits by Migliore, Rosanna, Yuasa, Kazuya, Guccione, Marina, Nakazato, Hiromichi, Messina, Antonino

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Quantum coherence of electrons field-emitted from a superconductor: Correlations and entanglement by Yuasa, Kazuya

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Determination of a merocyanine J-aggregate structure and the significant contribution of the electric dipole interaction to the exciton band wavelength by KATO, Noritaka, YUASA, Kazuya, ARAKI, Takeshi, HIROSAWA, Ichiro, SATO, Masugu, IKEDA, Naoshi, IIMURA, Ken-Ichi, UESU, Yoshiaki

“…The molecular alignment of a merocyanine (MC) J-aggregate monolayer at the air-water interface was determined by a grazing incidence x-ray diffraction method…”
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