English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Tomographic readout of an opto-mechanical interferometer

Kaufer, H., Sawadsky, A., Westphal, T., Friedrich, D., & Schnabel, R. (2012). Tomographic readout of an opto-mechanical interferometer. New Journal of Physics, 14: 095018. doi:10.1088/1367-2630/14/9/095018.

Item is

Files

show Files
hide Files
:
1205.2241 (Preprint), 425KB
Name:
1205.2241
Description:
File downloaded from arXiv at 2013-03-27 08:01
OA-Status:
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
:
NJoP_14_9_095018.pdf (Any fulltext), 778KB
Name:
NJoP_14_9_095018.pdf
Description:
-
OA-Status:
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Kaufer, Henning1, Author           
Sawadsky, Andreas, Author
Westphal, Tobias1, Author           
Friedrich, Daniel1, Author           
Schnabel, Roman1, Author           
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

Content

show
hide
Free keywords: Quantum Physics, quant-ph, Physics, Optics, physics.optics
 Abstract: The quantum state of light changes its nature when being reflected off a mechanical oscillator due to the latter's susceptibility to radiation pressure. As a result, a coherent state can transform into a squeezed state and can get entangled with the motion of the oscillator. The complete tomographic reconstruction of the state of light requires the ability to readout arbitrary quadratures. Here we demonstrate such a readout by applying a balanced homodyne detector to an interferometric position measurement of a thermally excited high-Q silicon nitride membrane in a Michelson-Sagnac interferometer. A readout noise of $\unit{1.9 \cdot 10^{-16}}{\metre/\sqrt{\hertz}}$ around the membrane's fundamental oscillation mode at $\unit{133}{\kilo\hertz}$ has been achieved, going below the peak value of the standard quantum limit by a factor of 8.2 (9 dB). The readout noise was entirely dominated by shot noise in a rather broad frequency range around the mechanical resonance.

Details

show
hide
Language(s):
 Dates: 2012-05-102012
 Publication Status: Issued
 Pages: 7 pages, 5 figures
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: arXiv: 1205.2241
DOI: 10.1088/1367-2630/14/9/095018
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: New Journal of Physics
  Other : New J. Phys.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Bristol, UK : Institute of Physics Pub.
Pages: - Volume / Issue: 14 Sequence Number: 095018 Start / End Page: - Identifier: ISSN: 1367-2630
CoNE: https://pure.mpg.de/cone/journals/resource/954926913666