Sungguen Ryu

Sungguen Ryu
  • Campus Universitat de les Illes Balears
    E-07122 Palma de Mallorca. Spain
  • Oficina S04
  • +34 971 17 33 69
  • Contact
My expertise is theory of electron transport in nanodevices driven into nonequilibrium by time-dependent field.
I addressed the following specific topics.
    How to control and measure a single-electron nonequilibrium excitations using the time-dependent field.
        (belongs to study oaf single-electron source and quantum tomography)
    How the electric currents/noises are affected by coherent interference of single/two-electron excitations.
        (belongs to study of electron-quantum optics and electron flying qubits)
    What is the decoherence/relaxation mechanism of the single-electron excitations.

I am interested in the general challenges:
    How to understand the nonequilibrium quantum dynamics of electrons.
    How to use the understanding for quantum information processing in nanodevices.
Related to this, I have background in quantum information theory: how to quantify many-body quantum entanglement.

Recently, I am trying to address the topics:
    How one can utilize the time-dependent external field to enhance efficiencies in the nano-scale thermodynamic machines
        (belongs to study of quantum thermodynamics)
    Realization of quantum version of voter model by using quantum feedback control.
        (belongs to study of quantum Maxwell demon)

Publicacions recents

Beating Carnot efficiency with periodically driven chiral conductors

Ryu, Sungguen; López, Rosa; Serra, Llorenç; Sanchez, David
Nature Communications 13, 2512 (2022)

Asymmetric arms maximize visibility in hot-electron interferometers

Clarissa J Barratt, Sungguen Ryu, Lewis A Clark, H-S Sim, Masaya Kataoka, Clive Emary
Physical Review B 104, 035436 (2021)

Picosecond coherent electron motion in a silicon single-electron source

Yamahata, Gento; Ryu, Sungguen; Johnson, Nathan; Sim, H.-S.; Fujiwara, Akira; Kataoka, Masaya
Nature Nanotechnology 14, 1019-1023 (2019)

Projectes de recerca recents i vigents



I.P.: Rosa Lopez, Llorenç Serra
The aim of this project is to investigate the heat and energy transport properties in nanoconductors considering complex phenomena due to either many-body interactions and/or the presence of quantum materials.

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