entanglement was maintained for nearly 30 minutes.
On objects that large! Yeah that deserves a couple of these -->
Gravitational wave measurements, and quantum computing and communications are just two applications of an international experiment that created entanglement between objects large enough to be visible to humans. At 15 microns, the “drumheads” described in this paper at Nature are of the scale of a human hair, much larger than …
"Working at the macro scale offers two important advantages. First, such objects can interact with both photons and microwaves, and could thus act as a channel between quantum communication systems (using photons) and microwave-based quantum computers."
Microwaves? Does that mean it can also act as part of my instant microwave oven lunch?
Microwaves? Does that mean it can also act as part of my instant microwave oven lunch?
If so, would it shorten the heating time? Would it work on food bigger than small stuffed mushroom? It might even allow you to fire up the microwave at home and heat the food at work via "entanglement". Enquiring minds and all that....
Hmm, not good.
Very, very not good.
The Company would expect you to entangle your home device in such a way that The Company kit would be powered by *your* electricity bill. It's your lunch, so you should pay to heat it.
Next year: entangling your water bill for your lunch-time cuppa. Maybe even heating and cooling the office with entangled household current. It would make sense as it would be *you* the environmental conditioning would be helping, not The Company.
infinitely precise reconstruction of classical forces driving the oscillators
I don't understand this. In a paper dealing with QM, how can the authors speak about "classical forces", moreso about "infinitely precise reconstruction"? The mind resonates from the sudden warp into Newton Universe. IMHO one could only obtain an arbitrarily smooth gaussian...
This has implications for gravitational wave detection
Possibly, and maybe more. Currently experiments of interest being prepared to actually check the intersectionality of QM and GR: Physicists Find a Way to See the ‘Grin’ of Quantum Gravity: A recently proposed experiment would confirm that gravity is a quantum force.. Maybe these guys could get together.
The final paper is free to read and that particular sentence has been toned down and tweaked. It now says:
Entangled mechanical oscillators combined with phase-sensitive measurement systems can find practical use in the precise reconstruction of classical resonant forces, which has implications for quantum metrology.
Which is a lot more sober.
Some sketchy googling suggests interferometers (and other "resonant" "mechanical" systems) suffer from noise well above the floor given by the uncertainty principle. But with entanglement you can "reconstruct" the missing information and get close to the Heisenberg limit. And I think that's all that's being said.
"At 15 microns ... of the scale of a human hair"
Not quite that scale. A grain of hazel pollen is more or less triangular and about 25 microns per side. Hazel's fairly typical so 15 micron is about the size of a smallish pollen grain. You might see it with the naked eye as a point of light. If you wanted to see its shape you'd need a decent microscope.
But certainly bigger than what quantum physicists work on.
Based on everything that we've been fed for decades regarding that 'Observation Effect' thingy, I presume not 'entangled' and 'visible' at the same time.
In other words, 'The Cat Must Be In A Box.'
I wonder if we'll finally be permitted to peek, given that just a few wafer-thin photons shouldn't bother a macroscopic clump all that much.
ypu have to distrurb the system to detect cat in a box