My Travels in Spring and Summer 2019 Yuta Michimura Department of - - PowerPoint PPT Presentation

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My Travels in Spring and Summer 2019 Yuta Michimura Department of - - PowerPoint PPT Presentation

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Ando Lab Seminar August 8, 2019 My Travels in Spring and Summer 2019 Yuta Michimura Department of Physics, University of Tokyo My Travels March 18-26: QFilter Workshop @ Paris May 20-21: Kamioka June 18: ICRR Seminar @ Kashiwa

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My Travels in Spring and Summer 2019

Yuta Michimura

Department of Physics, University of Tokyo

August 8, 2019 Ando Lab Seminar

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My Travels

  • March 18-26: QFilter Workshop @ Paris
  • May 20-21: Kamioka
  • June 18: ICRR Seminar @ Kashiwa
  • June 19-25: KIW6 @ Wuhan
  • June 30: FF meeting @ Nagoya
  • July 1: KAGRA Extended Chief Meeting @ U Toyama
  • July 2-3: Kamioka
  • July 5-6: Darkon 2019 @ Waseda
  • July 8-14: GR22 and Amaldi13 @ Valencia
  • July 23-27: TianQin Summer School @ Zhuhai
  • July 29: KAGRA Extended Chief Meeting @ U Toyama
  • July 30-31: Kamioka
  • August 5: Yorita Lab Seminar @ Waseda

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TianQin Summer School 2019

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TianQin Summer School 2019

  • 中山大学天琴中心2019年引力波暑期学校

http://tianqin.sysu.edu.cn/zh-hans/content/421

  • Two weeks, 10 lecturers (~4 slots each)

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马怡秋 Yiqiu Ma

This building is under construction (~Fall 2019)

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TianQin Research Center

  • Direct flight from 羽田 to 広州 (Guangzhou)
  • Two hours drive to 珠海 (Zhuhai)
  • Very nice city with mountains and beaches
  • 中山大学 campus itself is also very nice

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Lectures

  • I gave lectures on interferometry and quantum noise

calculations (and beauty of Fabry-Perot)

  • Yiqiu gave another lectures on quantum noise calculations

from Hamiltonian afterwards

  • Some students are very active

and asked me many questions

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World’s second longest lecture building

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天琴计划激光測距台站 Visit

  • Lunar laser ranging facility
  • Facility was very nice and new
  • Already produced some results

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By Hsien-Chi Yeh

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结业式

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GR22 and Amaldi13

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GR22 and Amaldi13

  • 22nd International Conference on General Relativity and

Gravitation

  • 13th Edoardo Amaldi Conference on Gravitational Waves

https://www.gr22amaldi13.com/

  • I gave KAGRA upgrade talk
  • More than 1000 participants,

~10 parallel sessions

  • I was mostly attending
  • Experimental Gravitation
  • Measurements of G
  • LISA

sessions

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Some Interesting Talks

  • Experimental Studies Of Gravity With Slow Neutrons,

Kitaguchi, Masaaki

  • Neutron interferometer (can be also used for GW detection?)
  • Newton-V Experiment: Test Of Gravitational Inverse Square

Law At A Micrometer Scale Shibaguchi, Hiroyuki

  • Started to use interferometers instead of cameras
  • Experimental Search For New Gravity-Like Interactions In

The Nanometer Range, Kamiya, Yoshio

  • Using angular distribution of neutron scattering off Xe gas
  • A New Class Of Experiments On The True Relativistic

Nature Of The One-Way Propagation Of Light

  • Unnikrishnan. C. S.
  • Space+Ground Multiband Detections. How Many?,

Gerosa, D

  • 3-12 stellar mass BBHs / 4 years (LISA will limit the observation)

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Some Interesting Talks

  • Cosmic Explorer, Matt Evans
  • CE1 (room temperature) and CE2 (Voyager type)
  • Gravimetry on the milliscale - 100mg as a source mass,

Tobias Westphal

  • 100 mg-100 mg dumbbell torsion pendulum, 6 mHz resonance, 0.2

pN/rtHz below 0.1 mHz, 100 mg source mass, UV LED discharge, factor

  • f 5 to observe gravitational force (but repulsive)
  • Update On The Work At Nist On The Determination Of

Newton’S Constant, G, Using The Bipm 2013 Apparatus, Clive Speake

  • Use sapphire source mass to confirm BIPM 2013 result
  • Space-Based Gravitational Wave Detector Simulation

Architecture For Noise Coupling Analysis And System Optimization—Current Status And Future Development, Zhang Y.Z.

  • Simulation development in China

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Darkon 2019

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Darkon 2019

  • ダークマターの懇談会 2019
  • Slides available at

http://www.kylab.sci.waseda.ac.jp/darkon2019/

  • More than 100 people attended
  • Many talks on both theory and experiment
  • I talked about DANCE and axion dark matter search with

interferometric gravitational wave detector

  • Dark matter field looks chaotic and experiments look tough

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Dark Matter Ranking

  • Believe if theorists say it is

interesting, but don’t believe if theorists say it is not interesting

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濱口幸一 郡和範

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Axions and Gravitational Waves

  • Axions can be detected with gravitational wave detectors

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早田次郎 arXiv:1904.09143

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KIW6

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KIW6

  • The 6th KAGRA International Workshop

http://kiw6.csp.escience.cn/dct/page/1

  • 中国科学院武汉物理与数学研究所
  • Social event was very good

Cycling at East Lake

  • Wuhan is famous for

breakfast

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Atom Interferometer at WIPM

  • Underground, 12 m tall
  • Test of equivalence principle
  • Also prototype for ZAIGA

(Zhaoshan Long-baseline Atom Interferometer Gravitation Antenna)

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华中科技大学引力中心 Visit

  • Torsion pendulum and atom interferometer experiments in

underground facility

  • Equivalence principle,

Square inverse law, Gravitational constant, Photon mass…

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Soundproof Magnetic shield Vibration isolated room

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G Measurement at 12 ppm

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Rotary connector Compensate local gravity field

  • Q. Li+, Nature 560, 582 (2018)
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CODATA 2018

  • 6.67430(15) x 10-11 m3 kg-1 s-2
  • 6.67408(31) x 10-11 m3 kg-1 s-2 (CODATA-2014)

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  • Q. Li+, Nature 560, 582 (2018)
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QFilter Workshop

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QFilter Project

  • Manipulation of an optomechanically coupled
  • scillator using a quantum filter
  • ANR-JST joint research

PI Antoine Heidmann (Laboratoire Kastler Brossel)

  • 0.54Million Euro
  • January 2019 – December 2024

PI Kentaro Somiya (Tokyo Institute of Technology)

  • 180Million Yen (~1.4Million Euro)
  • October 2018 – March 2024

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Objectives

  • Optomechanics for signal gain and bandwidth

enhancement

  • Proof of principle experiments
  • signal gain enhancement
  • signal bandwidth enhancement
  • Application of these techniques
  • Test of quantum mechanics
  • Gravitational wave detection
  • Nuclear magnetic resonance (NMR) detection

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  • LKB: Laboratoire Kastler Brossel
  • LAL: Laboratoire de l'Accélérateur Linéaire
  • LMA: Laboratoire des Matériaux Avancés
  • TT: Tokyo Institute of Technology
  • UT: University of Tokyo
  • RCAST: Research Center for Advanced Science

and Technology, University of Tokyo

  • Kyoto: Kyoto University
  • Tohoku: Tohoku University

Institutes

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Nobuyuki Matsumoto (Tohoku University) Kazuyuki Takeda (Kyoto University) Yuta Michimura (University of Tokyo) Koji Usami (RCAST) Kentaro Somiya (Tokyo Institute

  • f Technology)
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Signal Gain Enhancement

  • At TT
  • Modify optical spring frequency using a non-linear

crystal in signal recycling cavity

  • Demonstration experiment on-going

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Optical spring frequency shifts due to parametric amplification Optical resonance

  • K. Somiya+, Phys. Lett. A 380, 5 (2016)
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Signal Bandwidth Enhancement

  • At LKB
  • Bandwidth can be enhanced by compensating the

phase delay using negative dispersion of a micro resonator

  • Micropillar (30 μg) can be used

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  • H. Miao+, PRL 115, 211104 (2015)
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Test of Quantum Mechanics

  • At LKB, UT and Tohoku
  • Test at various scales to look into classical-

quantum boundary

  • Works for ground state cooling, standard quantum

limit measurement on-going

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30 μg micropillar 0.2-1 mg levitated mirror 7 mg suspended mirror 10 mg torsion bar

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Gravitational Wave Detection

  • At LKB, LAL, TT and UT
  • Sensitivity enhancement of GW detectors
  • parametric signal amplification
  • bandwidth enhancement
  • frequency dependent squeezing

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S S Y Chua+, CQG 31, 183001 (2014)

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Nuclear Magnetic Resonance

  • At RCAST and Kyoto
  • Readout NMR signal optomechanically to increase

the sensitivity

  • Demonstration done, working on further sensitivity

enhancement

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  • K. Takeda+, Optica 5, 152 (2018)
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QFilter Workshop

  • First occasion to meet collaborators face-to-face
  • Plan to have the workshop annually between

France and Japan (next one is Kyoto in March 2020)

  • March 19-20: Workshop & tour at LKB (Paris)
  • March 21: Discussion & tour at LMA (Lyon)
  • March 22: Lab tour to LAL (Orsay)
  • March 25: Meet Matteo Barsuglia at APC (Paris)

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Workshop Participants

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  • August 19-20: Kamioka
  • August 21-24: KAGRA F2F @ U Toyama
  • September 9-13: TAUP2019 @ Toyama
  • DANCE talk
  • September 17-20: JPS meeting 2019 Fall @ Yamagata U
  • km-scale space GW detector talk
  • October 9-10: Soda Lab Seminar @ Kobe U
  • GW and Lorentz invariance talk
  • October 14-17: GWPAW2019 @ RESCEU
  • KAGRA upgrade poster
  • October 21-24: 4M-COCOS @ Fukuoka U
  • KAGRA status talk
  • November 8-10: 量子エレクトロニクス研究会 @ 山中寮
  • GW detection and quantum technologies talk

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Upcoming Travel Plans