Posted on 03/16/2022 9:31:19 PM PDT by BenLurkin
An ideal system is a highly reflecting mirror whose motion is sensed by monochromatic light, which is photoelectrically detected with high quantum efficiency. A quantum optomechanical experiment is achieved if the quantum uncertainties of light and mirror motion influence each other, ultimately leading to the observation of entanglement between optical and motional degrees of freedom.
In AVS Quantum Science, researchers from Hamburg University in Germany review research on gravitational wave detectors as a historical example of quantum technologies and examine the fundamental research on the connection between quantum physics and gravity. Gravitational wave astronomy requires unprecedented sensitivities for measuring the tiny space-time oscillations at audio-band frequencies and below.
The team examined recent gravitational wave experiments, showing it is possible to shield large objects, such as a 40-kilogram quartz glass mirror reflecting 200 kilowatts of laser light, from strong influences from the thermal and seismic environment to allow them to evolve as one quantum object.
This decoupling from the environment, which is central to all quantum technologies, including the quantum computer, enables measurement sensitivities that would otherwise be impossible.
More broadly speaking, the decoupling of quantum devices from any thermal energy exchange with the environment is key. It is required for quantum measurement devices as well as quantum computers.
(Excerpt) Read more at phys.org ...
ping
A 200kw laser?
Holy blinding lights Batman.
https://www.ga.com/general-atomics-boeing-partner-on-high-energy-laser-weapon-system
Quantum entities sounds like something out of an H.P. Lovecraft novel.
Not that large. But good sized
Or a new band in town
The Hanford LIGO laser beam starts off at 4 watts and ends up at 200 watts after conversion and amplification.
Plato: *shakes head slowly* This isn’t what I was talking about AT ALL.
Newton: *sits in a chair* *looks at an apple sitting on a dish* *looks at gravitational wave mirror* *starts to say something, then doesn’t* *looks at apple again*
Me: Anyone want another beer? *holds up tray with assortment of foreign and domestic beers* It’s St Patrick’s day!
Plato: *in an absent voice* Do you....have any wine?
Newton: *still staring at apple* Are there any of those St Pauli Girls left? Those are good....
Jesus: You should slow down a little, Isaac.
Me: What about you?
JC: A Guiness for me. *goes back to playing Elvinar*
Later
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