Publications by Kenichi Komagata

Nonlinear dynamics and Kerr frequency comb formation in lattices of coupled microresonators

Tobias Kippenberg, Kenichi Komagata, Alexey Tikan, Aleksandr Tusnin

Recently, substantial progress has been made in the understanding of microresonators frequency combs based on dissipative Kerr solitons (DKSs). However, most of the studies have focused on the single-resonator level. Coupled resonator systems can open new ...

Nature Portfolio2023

Protected generation of dissipative Kerr solitons in supermodes of coupled optical microresonators

Rui Ning Wang, Tobias Kippenberg, Kenichi Komagata, Junqiu Liu, Mikhail Churaev, Xinru Ji, Alexey Tikan, Aleksandr Tusnin

A photonic dimer composed of two evanescently coupled high-Q microresonators is a fundamental element of multimode soliton lattices. It has demonstrated a variety of emergent nonlinear phenomena, including supermode soliton generation and soliton hopping. ...

AMER ASSOC ADVANCEMENT SCIENCE2022

Emergent nonlinear phenomena in a driven dissipative photonic dimer

Rui Ning Wang, Tobias Kippenberg, Kenichi Komagata, Hairun Guo, Junqiu Liu, Mikhail Churaev, Alexey Tikan

Collective effects leading to spatial, temporal or spatiotemporal pattern formation in complex nonlinear systems driven out of equilibrium cannot be described at the single-particle level and are therefore often called emergent phenomena. They are characte ...

NATURE RESEARCH2021

Dissipative Kerr solitons in a photonic dimer on both sides of exceptional point

Tobias Kippenberg, Kenichi Komagata, Hairun Guo, Mikhail Churaev, Alexey Tikan, Aleksandr Tusnin

Exceptional points are a ubiquitous concept widely present in driven-dissipative coupled systems described by a non-Hermitian Hamiltonian. To date, exceptional points have been extensively examined in the systems supporting only a few optical modes, thereb ...

NATURE RESEARCH2021

Symmetry protection against mode crossings in multimode photonic resonator chains

Rui Ning Wang, Tobias Kippenberg, Kenichi Komagata, Junqiu Liu, Mikhail Churaev, Xinru Ji, Alexey Tikan, Aleksandr Tusnin

The accessibility of solitons in driven-dissipative photonic dimers drastically varies for different supermode families. We explain the origin of this phenomenon and show its crucial influence on any soliton lattice configuration including topological arra ...

IEEE2021

Symmetry protection against mode crossings for dissipative Kerr soliton generation in microresonator chains

Rui Ning Wang, Tobias Kippenberg, Kenichi Komagata, Junqiu Liu, Mikhail Churaev, Xinru Ji, Alexey Tikan, Aleksandr Tusnin

IEEE2021

Dissipative Kerr solitons in a photonic dimer

Rui Ning Wang, Tobias Kippenberg, Kenichi Komagata, Hairun Guo, Junqiu Liu, Mikhail Churaev, Alexey Tikan

We study nonlinear dynamics emerging in a photonic microring dimer. It is shown that four wave mixing pathways between the dimer supermodes lead to novel nonlinear phenomena going beyond the single resonator physics. (C) 2020 The Author(s) ...

IEEE2020

Efficient Quantum Algorithms for GHZ and W States, and Implementation on the IBM Quantum Computer

Marc-André Dupertuis, Nicolas Macris, Clément Christian Javerzac-Galy, Kenichi Komagata, Fabien Gremion, Chun Lam Chan, Jarla Thiesbrummel, Romain Fournier

Efficient deterministic algorithms are proposed with logarithmic step complexities for the generation of entangled GHZ(N) and W-N states useful for quantum networks, and an implementation on the IBM quantum computer up to N = 16 is demonstrated. Improved q ...

WILEY2019