Search Results - "Hashisaka, Masayuki"

Shot Noise in Mesoscopic Systems: From Single Particles to Quantum Liquids by Kobayashi, Kensuke, Hashisaka, Masayuki

“…Shot noise, originating from the discrete nature of electric charge, is generated by scattering processes. Shot-noise measurements have revealed microscopic…”
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Ultrafast intrinsic optical-to-electrical conversion dynamics in a graphene photodetector by Yoshioka, Katsumasa, Wakamura, Taro, Hashisaka, Masayuki, Watanabe, Kenji, Taniguchi, Takashi, Kumada, Norio

“…Optical-to-electrical conversion in graphene is a central phenomenon for realizing anticipated ultrafast and low-power-consumption information technologies…”
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Quantized charge fractionalization at quantum Hall Y junctions in the disorder dominated regime by Lin, Chaojing, Hashisaka, Masayuki, Akiho, Takafumi, Muraki, Koji, Fujisawa, Toshimasa

“…Fractionalization is a phenomenon where an elementary excitation partitions into several pieces. This picture explains non-trivial transport through a junction…”
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On-chip coherent frequency-domain THz spectroscopy for electrical transport by Yoshioka, Katsumasa, Kumada, Norio, Muraki, Koji, Hashisaka, Masayuki

“…We developed a coherent frequency-domain terahertz (THz) spectroscopic technique on a coplanar waveguide in the ultrabroad frequency range from 200 MHz to 1.6…”
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Fast time-domain current measurement for quantum dot charge sensing using a homemade cryogenic transimpedance amplifier by Bohuslavskyi, Heorhii, Hashisaka, Masayuki, Shimizu, Takase, Akiho, Takafumi, Muraki, Koji, Kumada, Norio

“…We developed a high-speed and low-noise time-domain current measurement scheme using a homemade GaAs high-electron-mobility-transistor-based cryogenic…”
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Tomonaga–Luttinger-liquid nature of edge excitations in integer quantum Hall edge channels by Hashisaka, Masayuki, Fujisawa, Toshimasa

“…In interacting one-dimensional (1D) systems, the quasi-particle picture in Fermi-liquid theory cannot successfully describe low-energy physics. Instead,…”
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Coherent-Incoherent Crossover of Charge and Neutral Mode Transport as Evidence for the Disorder-Dominated Fractional Edge Phase by Hashisaka, Masayuki, Ito, Takuya, Akiho, Takafumi, Sasaki, Satoshi, Kumada, Norio, Shibata, Naokazu, Muraki, Koji

“…Couplings between topological edge channels open electronic phases possessing nontrivial eigenmodes far beyond the noninteracting-edge picture. However,…”
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Shot-noise evidence of fractional quasiparticle creation in a local fractional quantum Hall state by Hashisaka, Masayuki, Ota, Tomoaki, Muraki, Koji, Fujisawa, Toshimasa

“…We experimentally identify fractional quasiparticle creation in a tunneling process through a local fractional quantum Hall (FQH) state. The local FQH state is…”
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Coupling between quantum Hall edge channels on opposite sides of a Hall bar by Tu, Ngoc Han, Hashisaka, Masayuki, Ota, Takeshi, Sekine, Yoshiaki, Muraki, Koji, Fujisawa, Toshimasa, Kumada, Norio

“…We investigate the coupling between quantum Hall (QH) edge channels (ECs) located at opposite sides of a 50-μm-wide Hall bar by exciting a charged wavepacket…”
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Fluctuation theorem and microreversibility in a quantum coherent conductor by Nakamura, Shuji, Yamauchi, Yoshiaki, Hashisaka, Masayuki, Chida, Kensaku, Kobayashi, Kensuke, Ono, Teruo, Leturcq, Renaud, Ensslin, Klaus, Saito, Keiji, Utsumi, Yasuhiro, Gossard, Arthur C.

“…Mesoscopic systems provide us a unique experimental stage to address nonequilibrium quantum statistical physics. By using a simple tunneling model, we describe…”
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Admittance Measurement for a Quantum Point Contact in a Multiterminal Quantum Hall Device by Washio, Kazuhisa, Hashisaka, Masayuki, Kamata, Hiroshi, Muraki, Koji, Fujisawa, Toshimasa

“…We present admittance measurements for a quantum point contact embedded in a multiterminal quantum Hall system, using a time-resolved technique. The real part…”
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Temperature dependence of the visibility in an electronic Mach–Zehnder interferometer by Hashisaka, Masayuki, Helzel, Andreas, Nakamura, Shuji, Litvin, Leonid, Yamauchi, Yoshiaki, Kobayashi, Kensuke, Ono, Teruo, Tranitz, Hans-Peter, Wegscheider, Werner, Strunk, Christoph

“…We performed the conductance and the shot noise measurements in an electronic Mach–Zehnder interferometer. The visibility of the interference is investigated…”
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Shot noise induced by electron-nuclear spin-flip scattering in a nonequilibrium quantum wire by Chida, Kensaku, Hashisaka, Masayuki, Yamauchi, Yoshiaki, Nakamura, Shuji, Arakawa, Tomonori, Machida, Tomoki, Kobayashi, Kensuke, Ono, Teruo

“…We study the shot noise (nonequilibrium current fluctuation) associated with dynamic nuclear polarization in a nonequilibrium quantum wire (QW) fabricated in a…”
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Admittance Measurement for a Quantum Point Contact in a Multiterminal Quantum Hall Device by Washio, Kazuhisa, Hashisaka, Masayuki, Kamata, Hiroshi, Muraki, Koji, Fujisawa, Toshimasa

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Signatures of a Nonthermal Metastable State in Copropagating Quantum Hall Edge Channels by Itoh, Kosuke, Nakazawa, Ryo, Ota, Tomoaki, Hashisaka, Masayuki, Muraki, Koji, Fujisawa, Toshimasa

“…A Tomonaga-Luttinger (TL) liquid is known as an integrable system, in which a nonequilibrium many-body state survives without relaxing to a thermalized state…”
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Conductance anomaly and Fano factor reduction in quantum point contacts by Nakamura, Shuji, Hashisaka, Masayuki, Yamauchi, Yoshiaki, Kasai, Shinya, Ono, Teruo, Kobayashi, Kensuke

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Distributed electrochemical capacitance evidenced in high-frequency admittance measurements on a quantum Hall device by Hashisaka, Masayuki, Washio, Kazuhisa, Kamata, Hiroshi, Muraki, Koji, Fujisawa, Toshimasa

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Resonant edge magnetoplasmons and their decay in graphene by Kumada, N, Roulleau, P, Roche, B, Hashisaka, M, Hibino, H, Petković, I, Glattli, D C

“…We investigate resonant edge magnetoplasmons (EMPs) and their decay in graphene by high-frequency electronic measurements. From EMP resonances in disk shaped…”
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On-chip transfer of ultrashort graphene plasmon wave packets using terahertz electronics by Yoshioka, Katsumasa, Bernard, Guillaume, Wakamura, Taro, Hashisaka, Masayuki, Sasaki, Ken-ichi, Sasaki, Satoshi, Watanabe, Kenji, Taniguchi, Takashi, Kumada, Norio

“…Ultrashort polariton wave packets, such as terahertz graphene plasmon polaritons, could be used for fast information processing in integrated circuits…”
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Nonequilibrium fluctuation relations in a quantum coherent conductor by Nakamura, Shuji, Yamauchi, Yoshiaki, Hashisaka, Masayuki, Chida, Kensaku, Kobayashi, Kensuke, Ono, Teruo, Leturcq, Renaud, Ensslin, Klaus, Saito, Keiji, Utsumi, Yasuhiro, Gossard, Arthur C

“…We experimentally demonstrate the validity of nonequilibrium fluctuation relations by using a quantum coherent conductor. In equilibrium the…”
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