IKUSHIMA GROUP

Solid-State Quantum Physics


Profile

Kenji Ikushima, PhD.
Associate Professor

Dept. of Applied Physics,
Tokyo University of A & T
2-24-16 Naka-cho, Koganei-shi, Tokyo 184-8588 Japan
Tel/Fax: +81-42-388-7120

We are collaborated with

Tohoku Univ.
Tokyo Univ.
Montpellier 2 Univ.
JFE steel Co.
IHI Inspection & Instrumentation Co., Ltd.
Kyokuyo Co., Ltd.
Nippon Sigmax Co., Ltd.
Honda Electronics Co., Ltd.

We are supported by

JST A-STEP (2013 - 2014)
JSPS Grants-in-Aid for Scientific Research (2013 - 2016)
JSPS Grants-in-Aid for Scientific Research (2012 - 2013)
Iketani Foundation (2013)
Tateishi Foundation (2013)
JSPS Grants-in-Aid for Scientific Research (2010 - 2012)
JST PRESTO (2008 - 2011)
JST CREST (2006 - 2011)
NEDO (2006 - 2010)
The Asahi Glass Foundation (2009 - 2011)
Murata Science Foundation (2008)
Research Foundation for Opto-Science and Technology (2004 - 2005)

Welcome to IKUSHIMA GROUP

Research Overview

Our mission is to control quantum states in low dimensional semiconductors and to creat new devices and measurement techniques.

Quantum Physics in Semiconductors

We study quantum electron transport in micro/nano-meter scale devices, particularly in semiconductor quantum dots (QD), quantum wells (QW) and two-dimensional electron systems (2DES) at high magnetic fields (QHE device). Based on quantum transport phenomena, we attempt to manipulate electron waves, electron/nuclear spins and terahertz photons.

The following topics are promoted
*Electron spin manipulation: ESR of the spin-polarized edge states
*THz photon detection: QD based single electron transistors
*THz photon creation: Landau-level emission in the edge states
*THz photon transmission/confinement: THz split ring resonators
*Photo response of double QW transistors in strong magnetic fields
*Landau-level emission from Graphenes
*Inter-edge-state scattering in InGaAs 2DES

Measurement Techniques

We also develop new THz or Acoustic measurement techniques for practical applications.

*Passive THz microscope: Living-cell thermal monitoring
*Acoustically stimulated electromagnetic response: Medical and nondestructive evaluation

| Read more |


Our group has openings for PhD students and postdocs all year round. Please contact us.


This group was founded on Feb. 2008.

on 2 July 2012.

History

2012

Ultrasonic electronics 2012

N. Ohno et al., "Acoustically stimulated electromangetic response in bone" oral presentation (15 Nov. 2012).

Seminar

K. Ikushima, "On-chip THz photon manipulation" in LMU Munich (11 Oct. 2012).

International Conference

N. Ohno et. al., "Imaging of electromagnetic properties via acoustic excitation" in IEEE IUS 2012 (Oct. Dresden, Germany).

Y. Miyamoto et. al., "Passive infrared microscopy with high spatial resolution" in IRMMW2012 (Sep., Wollongong, Australia).

Invited

K. Ikushima, "On-chip terahertz photon manipulation" International Symposium on Compound Semiconductors (ISCS) (26 Aug.-30 Aug. 2012, Santa Barbara, USA)

2011

Young Scientist Award

Natsumi Ohno won the Young Scientist Award of USE2011.

USE2011

N. Ohno et al., "Measurements of acoustically stimulated electromagnetic response from piezoelectric materials" (Nov. 2011).

K. Takashima et al., "Nondestructive inspection of austenitic stainless steels by detection of acoustically stimulated electromagnetic response" (Nov. 2011).

Review Book, in press

K. Ikushima "Single-Photon Counting and Passive Microscopy of Terahertz Radiation" Frontiers in Optical Methods--Nanocharacterization and Coherent Control (Springer)

Paper Published.

K. Ikushima and S. Komiyama "Photon generation by injection of electrons via quantum Hall edge channels" Phys. Rev. B 84, 155313 (2011).

JSP Autumn Meeting

Y. Miyamoto, "Development of passive infrared microscopes" (22 Sep. 2011).

K. Ikushima, "Observation of largely enhanced spin splitting near the edge of a confined potential." (23 Sep. 2011).

2010

Keynote Presentation.

“On-chip Terahertz photon manipulation” K. Ikushima et al., selected as a keynote presentation in IRMMW-THz 2010.

Paper Published.

"Manipulating terahertz photons on a quantum Hall effect device" K. Ikushima et al., PhysicaE 42 1034 (2010).

K. Ikushima and S. Komiyama,"Imaging by terahertz photon counting" C. R. Physique 11 (2010) 444 - 456.

Review

K. Ikushima, "K. Ikushima "A new approach towards noninvasive investigation of vital function --- measurement of electromagnetic properties via ultrasonic waves ---" Material Integration 23 30 - 39 (2010).

JPS Autumn Meeting

K. Kunitani, "Photon generation associated with inter-edge-state scattering and the on-chip photon detection" (25 Sep. 2010).

K. Ikushima, "Terahertz-wave Generation/Transmission/Detection on a quantum Hall effect device"(25 Sep. 2010).

JSAP Autumn Meeting

H. Yamada, "Visualization of magnetization distribution by ultrasonic techniques III" (14 Sep. 2010).

Keynote Presentation.

K. Ikushima et al.“On-chip Terahertz photon manipulation”, selected as a keynote presentation in IRMMW-THz 2010.

Review Published

K. Ikushima "Single photon counting and passive microscopy of terahertz radiation", J. Vac. Soc. Jpn. 53, 309 (2010) (in Japanese).

K. Ikushima "Imaging of electromagnetic properties via ultrasoasnic waves", Ultrasonic Technology 5 -6, 75 (2010) (in Japanese).

JSAP Autumn Meeting

K. Nakamoto, "Visualization of magnetization distribution by ultrasonic techniques II" (17 Mar. 2010).

Paper Published

K. Ikushima et al. "Manipulating terahertz photons on a quantum Hall effect device", Physica E 42 1034 (2010).

2009

International Symposium on Advanced Nanodevices and Nanotechnology (ISANN)

K. Ikushima, "Generation of terahertz photons via edge-channel transport" (Hawaii, 4 Dec. 2009).

Symposium on Ultrasonic Electronics

H. Yamada, "Magnetic imaging by ultrasonic techniques" (18 Nov. 2009).

JPS Autumn Meeting

H. Yamada, "Detection of magnetization by ultrasonic modulation and the application to imaging" (27 Sep. 2009).

Webpage Updated

The group webpage was updated on 18 Sep. 2009.

JSAP Autumn Meeting

H. Yamada, "Visualization of magnetization distribution by ultrasonic techniques" (07 Sep. 2009).

International Conference on Electronic Properties of Two-Dimensional Systems (EP2DS - 18)

K. Ikushima, "Manipulating terahertz photons on a quantum Hall effect device" (Kobe, 23 July 2009).

The Asahi Glass Foundation

K. Ikushima was awarded on Continuation Grants for Young Researchers (09 June 2009).

Latest news

International Conference

PIERS 2016 (Shanghai, Chaina, Aug 2016 )

S. Okano and K. Ikushima (Invited), "Single photon detection of terahertz waves on an integrated-circuit resonator"

International Conference

EMN meeting on Terahertz (San Sebastian, Spain, May 2016 )

K. Ikushima (Invited), "Landau-Level Emission and Detection in Two-Dimensional Electron Systems"

International Conference

EP2DS-21 (Sendai, Japan, July 2015 )

K. Ikushima et al., "Converting electrons to photons in highly imbalanced spin-polarized edge states"

Paper published

H. Yamada, K. Ikushima, K. Watanabe, "Magnetic hysteresis and magnetic flux patterns measured by acoustically stimulated electromagnetic response", Jpn. J. Appl. Phys. 54, 086601 (2015)

International Conference

TeraNano VI (Okinawa, Japan, July 2015 )

D. Nakagawa et al., "Response of a Charge Sensitive Infrared Phototransistor in Strong Magnetic Fields"

International Conference

TeraNano VI (Okinawa, Japan, July 2015 )

K. Ikushima (Invited), "Terahertz Photon-Counting Measurements for Landau-Level Physics in Two Dimensional Electron Systems"

International Conference

TeraNano V (Martinique, France, Dec. 2014 )

Shun Okano et al., "Energy Resolved Photon-Counting Measurements Using Quantum Dot Detectors Coulpled to Split-Ring Resonator"

International Conference

TeraNano V (Martinique, France, Dec. 2014 )

K. Ikushima (Invited), "Manipulating Terahertz Photons on a Solid State Chip Surface"

International Conference

Quantum Dot 2014 (Pisa, Italy, May 2014)

K. Ikushima et al., "Terahertz photon circuits using quantum electron transport"

Paper published

K. Ikushima, A. Ito, and S. Okano, "Generation, transmission, and detection of terahertz photons on an electrically driven single chip", Appl. Phys. Lett. 104, 052112 (2014).

Review published

Kenji Ikushima, "Single-Photon Counting and Passive Microscopy of Terahertz Radiation", in Frontiers in Optical Methods (Springer Series in Optical Sciences Vol.180, pp. 197-212, 2014).

International Symposium (Hawaii, Dec. 2013)

International Symposium on Advanced Nanodevices and Nanotechnology (ISANN)

K. Ikushima et al., "On-chip terahertz photon transmission using quantum electron transport"

Paper published

H. Yamada, K. Takashima, K. Ikushima, H. Toida, M. Sato and Y. Ishizawa "Magnetic sensing via ultrasonic excitation" Rev. Sci. Instrum. 84, 044903 (2013).

International Symposium (Singapore, April 2013)

The 32nd International Acoustical Imaging Symposium (AI32)

H. Yamada et al., "Magnetic imaging by ultrasonic techniques"

International Workshop (Kyoto, April 2013)

OTST (Optical Terahertz Science and Technology)

Y. Miyamoto et al., "Local detection of thermal radiation emitted from the liquid-solid interface"

S. Okano et al., "Electromagnetic Modeling of Planar Terahertz Resonators for On-chip Photon Detection"

Link

Dept. of Applied Physics (Japanese only)

Tokyo University of A & T

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