Invited Talks at International Meetings

Dr. Hiroshi Yamaguchi

Fellow, Nanomechanics Research Group
Executive Manager, Quantum and Nano Device Research
NTT Basic Research Laboratories

NTT, Inc.
3-1, Morinosato Wakamiya, Atsugi-shi, Kanagawa 243-0198, Japan
Tel: +81-46-240-2622, Fax: +81-46-240-4317
email:hrsh.yamaguchi[at]ntt.com

2025

Motoki Asano, Hajime Okamoto, and Hiroshi Yamaguchi
"Two-tone and temporal control in optomechanical non-degenerate synchronization"
Workshoip on Parametric Phenomena 2025, Konstanz, Germany (Aug. 2025).
2024
Hiroshi Yamaguchi, Daiki Hatanaka, Motoki Asano, and Hajime Okamoto
"Hybrid nanomechanical devices and sensing applications"
ICTP School and Workshop on Frontiers of Nanomechanics, Trieste, Italy (Sep. 2024).
Hiroshi Yamaguchi, Daiki Hatanaka, Motoki Asano, and Hajime Okamoto
"Sensing devices utilizing novel nanomechanical hybrid systems"
Beilstein Nanotechnology Symposium "Sensing with mechanical systems (SMS) - from the classical to the macroscopic quantum regime", Rudesheim, Germany (Sep. 2024).
Hiroshi Yamaguchi, Daiki Hatanaka, Motoki Asano, and Samer Houri
"1D and 2D Topological solitons in nanoelectromechanical resonator arrays"
14th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META2024), Toyama, Japan (July 2024).
H. Yamaguchi, R. Ohta, D. Hatanaka, Y. Okazaki, and H. Okamoto
"Hybrid Acoustic Devices based on Compound Semiconductors"
21th International Symposium on the Physics of Semiconductors and Applications (ISPSA2024), Jeju, South Korea (June. 2024).
D. Hatanaka, H. Takeshita, M. Kataoka, H. Okamoto, K. Tsuruta, and H. Yamaguchi
"UHF Nanoelectromechanical valley topological circuits"
2024 Gordon Research Conference - Mechanical Systems in the Quantum Regime - , Ventura, USA (March 2024).
2023
Hiroshi Yamaguchi, Daiki Hatanaka, Ryuichi Ohta, Motoki Asano, and Hajime Okamoto
"Hybrid Phononic Devices for Classical and Quantum Technologies"
OIST Workshop "Feedback Control of Quantum Machines", Okinawa, Japan (Nov. 2023).
H. Yamaguchi, D. Hatanaka, R. Ohta, M. Asano, and H. Okamoto
"Novel Directions in Hybrid Phononic Devices"
17th International Conference on Phonon Scattering in Condensed Matter (Phonons 2023), Paris, France (July 2023).
H. Yamaguchi, D. Hatanaka, M. Asano, and S. Houri
"Topological Solitons in the Arrays of Nanomechanical Parametric Resonators"
Frontiers of Nanomechanical Systems (FNS) 2023, Delft, Netherlands (June 2023).
H. Yamaguchi, D. Hatanaka, R. Ohta, M. Asano, and H. Okamoto
"Novel acoustic hybrid devices -from magnon to rare-earth two-level systems-"
International Workshop on Hybrid Quantum Systems and Interfaces, Las Vegas, USA (March 2023).
2021
H. Yamaguchi, M. Asano, and S. Houri
"Rotating-frame nonlinear dynamics in nanomechanical resonators"
4th Workshop on Optomechanics and Brillouin Scattering (WOMBAT), Erlangen, Germany (Online) (June 2021).
2019
H. Yamaguchi
"Strain-mediated mechanical control of spin systems in semiconductor heterostructures"
International Focus Workshop on Physics and Applications in Nanoelectronics and Nanomechanics, Daejeon, Korea (August 2019).
2018
D. Hatanaka, M. Kurosu, and H. Yamaguchi
"Propagation control of acoustic waves in compound semiconductor phononic crystal waveguides"
IEEE International Conference on Emerging Electronics (IEEE-ICEE) 2018, Bangalore, India (December 2018).
H. Yamaguchi
"Electron-Photon-Phonon hybrid systems based on compound semiconductor mechanical resonators"
65th Annual American Vacuum Society International Symposium and Exhibition, Long Beach, USA (October 2018).
H. Yamaguchi, R. Ohta, and H. Okamoto
"Carrier mediated optomechanics"
France-Japan Bilateral Workshop on Hybrid Quantum Systems, Paris, France (October 2018).
H. Yamaguchi, R. Ohta, and H. Okamoto
"Carrier mediated optomechanical coupling in a GaAs/AlGaAs heterostructure cantilever"
SPIE Optics + Photonics 2018, San Diego, USA (August 2018).
H. Yamaguchi, D. Hatanaka, and M. Kurosu
"Propagation control of acoustic waves in GaAs-based phononic crystal waveguide"
34th International Conference on the Physics of Semiconductors (ICPS2018), Montpellier, France (August 2018).
H. Yamaguchi
"GaAs/AlGaAs heterostructures for micro- and nano-electromechanics"
2-days workshop "MBE technology of hetero-structures with a high-mobility Two-Dimensional Electron Gas (2DEG)", Moscow, Russia (May 2018).
2017
D. Hatanaka, M. Kurosu, and H. Yamaguchi,
"Dynamic phonon propagation control in GaAs/AlGaAs phononic crystal wave guides"
6th International Workshop "Epitaxial Growth and Fundamental Properties of Semiconductor Nanostructures", Como, Italy (September 2017).
D. Hatanaka, M. Kurosu, and H. Yamaguchi,
"GaAs/AlGaAs electromechanical phononic crystal waveguide"
Physics and Applications of Nanoelectronic and Nanomechanical Systems, Yong Pyong resort, Republic of Korea (August 2017).
H. Yamaguchi
"Electromechanical semiconductor quantum structures"
SPIE Optics & Photonics annual meeting 2017, San Diego, US (August 2017).
D. Hatanaka, M. Kurosu, and H. Yamaguchi,
"GaAs/AlGaAs phononic crystal waveguide"
Asia Pacific Society for Materials Reseach 2017 Annual Meeting, Sapporo, Japan (July 2017).
H. Yamaguchi, M. Kurosu, and D. Hatanaka
"Acoustic phonon manipulation in GaAs/AlGaAs electromechanical systems"
US-Japan Joint Seminar on Nanoscale Transport Phenomena, Tokyo, Japan (June 2017).
H. Yamaguchi, I. Mahboob, H. Okamoto, and D. Hatanaka
"Parametric coupling and correlated fluctuation in multimode electromechanical resonators"
Frontiers of Nanomechanical Systems 2017 (FNS2017), La Thuile, Italy (Feb. 2017).
2016
H. Yamaguchi
"Mechanical resonators hybridized with semiconductor quantum structures"
German-Japanese Meeting on the Science of Hybrid Quantum Systems, Berlin, Germany (Nov. 2016)
H. Yamaguchi, H. Okamoto, D. Hatanaka, Y. Okazaki, and I. Mahboob
"Cavity electromechanics for phonon manipulation"
6th Summer School on Semiconductor/Superconducting Quantum Coherence Effects and Quantum Information, Nasu, Japan (Sep. 2016)
H. Yamaguchi, I. Mahboob, and H. Okamoto,
"Multi-mode nonlinear electromechanics"
Opto- and Electro-mechanical Technologies 2016 (OET2016), Monte Verita, Switzerland (July 2016)
H. Yamaguchi, H. Okamoto, D. Hatanaka, Y. Okazaki, and I. Mahboob,
"Piezoelectric phonon manipulation in electromechanical resonators and waveguides"
SPICE Workship "Quantum Acoustics - Surface Acoustic Waves meets Solid State Qubits", Mainz, Germany (May 2016)
H. Yamaguchi, I. Mahboob, H. Okamoto, and D. Hatanaka,
"Phonon Confinement, Transport, and Piezoelectric Manipulation in Nonlinear Electromechanical Resonators"
The 11th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems (IEEE-NEMS 2016), Sendai, Japan (April 2016)
H. Yamaguchi,
"Mechanical Systems Hybridized with Semiconductor Quantum Structures",
Gordon Research Conference -Mechanical Systems in the Quantum Regime- (GRC), Ventura, US (March 2016).
2015
H. Yamaguuchi, D. Hatanaka, I. Mahboob, H. Okamoto,
"Phonon confinement, transport, and piezoelectric manipulation in semiconductor micromechanical structures"
2015 Material Research Society Fall meeting (MRS), Boston, US (Dec. 2015).
H. Yamaguchi, D. Hatanaka, I. Mahboob, and H. Okamoto,
"III-V semiconductor micro/nanomechanical resonators"
5th International Workshop on Epitaxial Growth and Fundamental Properties of Semiconductor Nanostructures (SemiconNano 2015), Hsinchu, Taiwan (Sep. 2015).
2014
H. Yamaguchi, I. Mahboob, H. Okamoto, D. Hatanaka
"Nonlinear phonon dynamics in electromechanical resonators"
ICTS Discussion Meeting on Frontiers in Light-Matter Interactions, Kolkata, India (Dec. 2014).
H. Yamaguchi, D. Hatanaka, I. Mahboob, and H. Okamoto
"Opto/electromechanical resonators based on GaAs/AlGaAs heterostructures"
2014 International Electron Devices and Materials Symposium (IEDMS 2014) Hualien, Taiwan (Nov. 2014).
H. Yamaguchi, D. Hatanaka, I. Mahboob, and H. Okamoto
"Nonlinear electromechanical resonators ～ From Phonon Lasing Operation to Nanomechanical Processors ～"
6th IEEE International Nanoelectronics Conference (IEEE-INEC2014), Sapporo, Japan (July 2014).
H. Yamaguchi, D. Hatanaka, H. Okamoto, and I. Mahboob
"Nonlinear phonon dynamics in electromechanical resonators"
ICC-IMR / 20th REIMEI International Workshop Spin Mechanics 2, Sendai, Japan (June 2014).
H. Yamaguchi, I. Mahboob, and H. Okamoto
"Nonlinear Dynamics and All Mechanical Phonon Lasing in Electromechanical Resonators"
IEEE International Frequency Control Symposium (IFCS 2014), Taipei, Taiwan (May 2014).
2013
H. Yamaguchi, I. Mahboob, H. Okamoto, and Y. Okazaki
"Coherent manipulation and lasing operation in micromechanical phonon cavities"
The 2013 International Symposium on Advanced Nanodevices and Nanotechnology (ISANN2013), Kauai, US (Nov. 2013).
H. Yamaguchi, H. Okamoto, T. Watanabe, Y. Okazaki,
"Mechanical systems coupled to semiconductor quantum structures",
CeNS Workshop -Nanosciences: Great Adventures on Small Scales" (CeNS2013), San Servolo, Italy (Sep. 2013)
H. Yamaguchi, I. Mahboob, and H. Okamoto,
"Coherent manipulation and phonon lasing in electromechanical resonators"
ICTP Workshop on "Frontiers of Nanomechanics" Triest, Italy (Sep. 2013).
H. Yamaguchi, I. Mahboob, and H. Okamoto,
"Nonlinear phonon dynamics in GaAs/AlGaAs electromechanical resonators"
10th Topical Workshop on Heterostructure Microelectronics (TWHM2013), Hakodate, Japan (Sep. 2013).
H. Yamaguchi, I. Mahboob, and H. Okamoto,
"Strong modal-coupling and parametric control in electromechanical resonators",
Focused International Workshop on "Spin Mechanics", Mito, Japan (Feb. 2013)
H. Yamaguchi, H. Okamoto, and I. Mahboob,
"Strong coupling and time-domain control in electromechanical parametric resonators",
10th RIEC International Workshop on Spintronics, Sendai, Japan (Jan. 2013)

2012

H. Yamaguchi, I. Mahboob, H. Okamoto and K. Onomitsu,
"Semiconductor Heterostructures for Novel Electromechanical Devices",
Material Science Week 2012, Sendai, Japan (Nov. 2012)
H. Yamaguchi, I. Mahboob and H. Okamoto,
"Parametric mode-coupling and its application to signal processing in GaAs/AlGaAs electromechanical resonators",
International Conference on the Physics of Semiconductors (31st ICPS), Zurich, Swiss (July 2012)
H. Yamaguchi, I. Mahboob and H. Okamoto,
"Piezoelectric parametric resonators",
The Training Workshop on Noise and Nonlinearities in Mechanical resonators, (NEMS-Barcelona), Barcelona, Spain (May 2012).

2011

H. Yamaguchi, I. Mahboob, H. Okamoto, and K. Onomitsu,
"Heterostructure-based parametric resonator and its applications",
The Second International Seminar on Nano-Electro-Mechanical Systems (NEMS2011), Toulouse, France (July 2011).

2010

H. Yamaguchi,
"Quantum effects of motion",
Japanese-American Frontiers of Science (JAFoS2010), Chiba, Japan, (Dec. 2010).
H. Yamaguchi, H. Okamoto, Y. Maruta, S. Ishihara, and Y. Hirayama,
"Mechanical to electrical energy transduction using a micromechanical 2DES cantilever",
16th International Conference on Molecular Beam Epitaxy (MBE2010), Berlin, Germany (Aug. 2010).
H. Yamaguchi, I. Mahboob, H. Okamoto, and K. Onomitsu,
"Electromechanical logic systems using compound semiconductor heterostructure",
2010 Asia-Pacific Workshop on Fundamentals and Applications of Advanced Semiconductor Devices (AWAD2010), Tokyo, Japan (June 2010). (Plenary)
H. Yamaguchi, I. Mahboob, H. Okamoto, and K. Onomitsu,
"Micro/nanoelectromechanical systems for advanced semiconductor devices",
2010 International RCIQE/CREST Joint Workshop, Sapporo, Japan (Mar. 2010).

2009

H. Yamaguchi,
"Compound semiconductor micro/nanomechanical systems",
8th Topical Workshop on Heterostructure Microelectronics (TWHM2009), Nagano, Japan (Aug. 2009).
H. Yamaguchi,
"Heterostructure-based micro/nanomechanical systems",
The 18th International Conference on Electronic Properties of Two-Dimensional Systems (EP2DS), Kobe, Japan (Jul. 2009).
H. Yamaguchi,
"Micro/Nanomechanical systems based on compound semiconductor heterostructures",
Frontiers in Nanoscale Science and Technology 2009 (FNST 2009), Boston, U.S.A (May 2009).

2008

H. Yamaguchi,
"Novel Functionalilties in Semiconductor-based Micro/Nanomechanical Systems",
21st International Microprocesses and Nanotechnology Conference, Fukuoka, Japan (Oct. 2008).
H. Yamaguchi, I. Mahboob, H. Okamoto, and K. Onomitsu,
"Micro/Nanomechanical Systems Based on Semiconductor Heterostructures",
The International Symposium on Compound Semiconductors, Rust, Germany (Sep. 2008).
H. Yamaguchi and I. Mahboob,
"Micro/Nanomechanical Systems for Information Processing",
The 9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology, Saitama, Japan (Aug. 2008).

(Go back to the home page of NTT Basic Research Laboratories)