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Title: First measurements of high frequency cross-spectra from a pair of large Michelson interferometers

Journal Article · · Physical Review Letters
 [1];  [2];  [3];  [4];  [5];  [6];  [6];  [7];  [7];  [1];  [1];  [8];  [9]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Univ. of Michigan, Ann Arbor, MI (United States)
  3. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Chicago, Chicago, IL (United States)
  4. Univ. of Chicago, Chicago, IL (United States); Vanderbilt Univ., Nashville, TN (United States)
  5. Univ. of Chicago, Chicago, IL (United States); Korea Advanced Institute of Science and Technology (KAIST), Daejeon (Republic of Korea)
  6. Univ. of Chicago, Chicago, IL (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  7. Univ. of Chicago, Chicago, IL (United States)
  8. Space X, Hawthorne, CA (United States)
  9. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

Here, measurements are reported of the cross-correlation of spectra of differential position signals from the Fermilab Holometer, a pair of colocated 39 m long, high power Michelson interferometers with flat broadband frequency response in the MHz range. The instrument obtains sensitivity to high frequency correlated signals far exceeding any previous measurement in a broad frequency band extending beyond the 3.8 MHz inverse light-crossing time of the apparatus. The dominant but uncorrelated shot noise is averaged down over 2 × 108 independent spectral measurements with 381 Hz frequency resolution to obtain 2.1 × 10-20m/ √Hz sensitivity to stationary signals. For signal bandwidths Δf > 11 kHz, the sensitivity to strain h or shear power spectral density of classical or exotic origin surpasses a milestone PSDδh < tp where tp = 5.39 × 10-44/ Hz is the Planck time.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
Holometer Collaboration
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1330368
Alternate ID(s):
OSTI ID: 1323572
Report Number(s):
FERMILAB-PUB-16-217-AE; PRLTAO; 1486143
Journal Information:
Physical Review Letters, Vol. 117, Issue 11; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 27 works
Citation information provided by
Web of Science

References (21)

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Upper limits on a stochastic gravitational-wave background using LIGO and Virgo interferometers at 600-1000 Hz text January 2012
Searching for stochastic gravitational waves using data from the two colocated LIGO Hanford detectors other January 2015
High-frequency corrections to the detector response and their effect on searches for gravitational waves text January 2008
An Upper Limit on the Stochastic Gravitational-Wave Background of Cosmological Origin text January 2009
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Cited By (3)

Cosmic archaeology with gravitational waves from cosmic strings text January 2018
MHz Gravitational Wave Constraints with Decameter Michelson Interferometers text January 2016
Cosmic Archaeology with Gravitational Waves from Cosmic Strings text January 2017

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