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HOLOMETER

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Feature

   


 * WHERE IS THE HOLOMETER?
   
   The Holometer is located at Fermi National Accelerator Laboratory.
   
   Read More

   
   


 * PREPARING THE LASER BEAMS
   
   The pre mode cleaner is an important part of the optics we use to prepare
   laser beams for interferometers
   
   How do you make this measurement?

   
   


 * THE EAST HUT
   
   Two of the end mirrors are in the east hut.

   
   


 * CENTRAL CLEAN ROOM
   
   Research Technician Ben Brubaker works on the beam splitter vacuum system.

   


HOLOMETER

The Fermilab Holometer is a new kind of instrument designed to study the quantum
character of space itself. It measures the quantum coherence of location with
unprecedented precision.

Laser light passing through an arrangement of mirrors will show whether space
stands still, or whether it always jitters by a tiny amount, carrying all matter
with it, due to quantum-geometrical fluctuations. We call this new property of
space time ``holographic'' noise.

The experiment will help us understand space and time better: what they are made
of, and how they relate to matter and energy.

The experiment, also known as Fermilab E-990, has concluded data collection and
analysis




RESULTS

The paper documenting our first science results is now published in Physical
Review Letters: First Measurements of High Frequency Cross-Spectra from a Pair
of Large Michelson Interferometers.

An arXiv version can be found here.

There is also a Fermilab news article describing the result.

Interferometric Constraints on Quantum Geometrical Shear Noise Correlations (24
Mar 2017)

Interferometric Constraints on Spacelike Coherent Rotational Fluctuations (13
Dec 2020) describes results from the "bent-arm" configuration.

Random twists in space? Fermilab news article describing the result.


DATA MANAGEMENT PRINCIPLES

We describe our Data Management Principles for the Holometer.

Here is a CSV file containing the data used for the September 2016 Physical
Review Letters results.

What does this graphic represent?


Last modified: 02/12/2021 | email

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