Double Balanced Homodyne Detection and Fabry-Perot gravitational-wave detector

Document #:

JGW-G1808228-v1

Document type:

G

Submitted by:

Kouji Nakamura

Updated by:

Kouji Nakamura

Document Created:

11 May 2018, 20:02

Contents Revised:

12 May 2018, 20:54

DB Info Revised:

12 May 2018, 20:54

Abstract:

This research is on a readout scheme of gravitational-wave detectors. In this poster, we discuss an application of our double balanced homodyne detection, which was proposed in the previous f2f meeting, to the Fabry-Perot GW detectors as an example. Although the advantage of the frequency-dependent homodyne detection is lost due to the vacuum noise in the realization of the double balanced homodyne detection, this example indicates that we should discuss the signal-noise trade-off relation by the total quantum measurement process including its readout scheme, since the quantum measurement process of gravitational-wave detectors is completed by the inclusion of its readout scheme.

Files in Document:

• 19KAGRAf2f20180518OCU_KoujiNakamura_90SecTalk.pdf (190.8 kB)

Topics:

• Management:Collaboration meeting:KAGRA F2F
• Detector:Others
• Activity:Theory

Authors:

• Masa-Katsu Fujimoto
• Kouji Nakamura

Keywords:

theory readout scheme homodyne detection