Physicists in Finland Latest Scientists to Create Time Crystals

[Non Sync]

It seems time crystals are real. They were first proposed in 2012 by American theoretical physicist Frank Wilczek and are a phase of matter that exists only at tiny atomic scales and extremely low temperatures (-459.67 degrees Fahrenheit, just one-ten-thousandth of a degree above absolute zero). These crystals don't look like natural crystals but the term is used to describe their regular changes in quantum states over a period of time. Their oscillation between two low-energy states, in theory, could be continuous and be a true type of perpetual motion.

Not quite the same as the Klingon time crystals, but this research was probably the inspiration for the fictional ones.

 

[XCV330]

I wonder if the energy states could be manipulated? if so, you have two binary states. Couple that with quantum entanglement, you have at least the potential for FTL communication over long distances. it might be extremely slow, like QRSS, but if you are sending a probe (or people ) out to other stars, or even the outer solar system, it could beat having to wait on light speed, or the power needed for interstellar laser or maser communication.

 

[Non Sync]

Scientists have been working with linked quantum particles for communications for a while now. They think the time crystals could be used as memory for quantum computers.

 

[XCV330]

No one has ever successfully used entanglement for communications though (or it would be one of the greatest achivements of science in the last 100 years) as attempting to change the quantum state breaks entanglement. i was wondering if this might be a way to cheat that.

 

[shapeshifter]

I got a bad feeling about this.

Start the countdown clock for us to erase our existence.

 

[Non Sync]

No one has ever successfully used entanglement for communications though (or it would be one of the greatest achivements of science in the last 100 years) as attempting to change the quantum state breaks entanglement. i was wondering if this might be a way to cheat that.

Actually, the Indian government's Department of Space has demonstrated quantum entanglement based real time Quantum Key Distribution over 300m free space last year.
https://www.indianweb2.com/2022/02/...ibility greater than 2.2 and 80% respectively.

 

[Asbo Zaprudder]

Not really a communication channel though - such as you could use to send bulk data. Once keys are distributed, conventional channels are used. Also no-one has come up with a scheme that would allow FTL comms using entanglement. This is thought to be impossible as it would break causality. However, things move quickly in this field and it's hard to keep up.

 

[NCC-73515]

It has nothing to do whatsoever at all with time travel or visions of the future though. Just like the real Stamets's work has nothing at all to do with propulsion or subspace planes

 

[Asbo Zaprudder]

Yeah, almost certainly not but I don't object to SF authors imagining the existence of exploitable loopholes that permit fantastical technologies.

 

[publiusr]

I hope an ansible is a long time coming.
It would kill spaceflight.

Starlink would be its first casualty.

Yes you could drive a robot via telepresence—but no comsat industry to prop it up. I want fusion, gravity manipulation/FTL etc…first.

This and wormholes last.

We have sat-free neutrino communication now…
https://blogs.scientificamerican.co...neutrino-beam-transmitted-through-solid-rock/

Imaginary numbers may be the key to new technology:
https://aeon.co/essays/how-imaginary-numbers-describe-the-fundamental-shape-of-nature

Ansibles would be easier tech however…so it may come before any others….and leave them stillborn .

An extra dimension of time:
https://www.livescience.com/fibonacci-material-with-two-dimensions-of-time

 

[Asbo Zaprudder]

Imaginary numbers may be the key to new technology:
https://aeon.co/essays/how-imaginary-numbers-describe-the-fundamental-shape-of-nature

Nothing new there. Perhaps the writer of that article has never heard of quaternions or octonions, not to mention tessarines, coquaternions, and biquaternions. Together with complex numbers, they are just ordered sets of real numbers that obey given sets of rules.

Hypercomplex number - Wikipedia

 

[XCV330]

Ansibles would be easier tech however…so it may come before any others….and leave them stillborn .

But that would offer another good answer to the Fermi Paradox besides the firstborn scenario: no culture gets to the point that it feels the NEED to settle beyond its solar system.

 

[Asbo Zaprudder]

I suspect it's tempting to just lift mass from your homeworld's star so that it stays much longer on the Main Sequence - perhaps keep the gas until you need it to create a replacement. Spend your time running simulations powered by Dyson collectors. After many billion years you'd have to move on but possibly not if you work out how to survive around a white dwarf. If the simulations are more enticing and less dangerous than what might lurk out there, why take the risk of leaving home? Not everyone wants to be a conquistador.

 

[publiusr]

Having a Hot Jupiter might help with starlifting perhaps

 

[Asbo Zaprudder]

Perhaps find a way to amplify the Alfvén-wave energy flux that probably powers the solar wind?

How Alfvén waves energize the solar wind: heat versus work | Journal of Plasma Physics | Cambridge Core

Alfvén wave - Wikipedia

SVS: Alfvén Waves - Basic (nasa.gov)

As the (non-relativistic) Alfvén wave group velocity is directly proportional to the magnetic field strength, enhancing the latter in the correct direction would probably do the trick.

 

[Disposable_Ensign]

No one has ever successfully used entanglement for communications though (or it would be one of the greatest achivements of science in the last 100 years) as attempting to change the quantum state breaks entanglement. i was wondering if this might be a way to cheat that.

Universities have been able to implement one-qubit quantum internets before, I believe.
https://www.tudelft.nl/en/2021/tu-d...-the-first-entanglement-based-quantum-network
https://www.nytimes.com/2022/05/25/technology/quantum-internet-teleportation.html
https://physicsworld.com/a/multi-us...k-paves-the-way-towards-the-quantum-internet/
https://arxiv.org/abs/1907.08229
https://phys.org/news/2020-11-physicists-efficient-modem-future-quantum.html
https://arxiv.org/abs/2103.13095
https://phys.org/news/2021-01-drones-local-quantum-networks.html
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.126.020503

 

[Asbo Zaprudder]

While I understand the advantage for security against eavesdropping for encryption key or one-time pad distribution or even unencrypted data eventually, I don't see any other advantages for communication using entanglement. Anyone care to enlighten me (but preferably not with a high-powered laser) if there are any? One-time pads are uncrackable without the pad (if used only once) but require the same number of bits as the message. If the channel truly cannot be intercepted undetectably then it should be fine to use it for an unencrypted signal. However, several methods of quantum hacking have already been demonstrated. I have wondered in the past if quantum nondemolition might also be used but I don't know if that's even a sensible suggestion. It's probably not possible because of the no-cloning theorem.

 

[Disposable_Ensign]

While I understand the advantage for security against eavesdropping for encryption key or one-time pad distribution or even unencrypted data eventually, I don't see any other advantages for communication using entanglement. Anyone care to enlighten me (but preferably not with a high-powered laser) if there are any? One-time pads are uncrackable without the pad (if used only once) but require the same number of bits as the message. If the channel truly cannot be intercepted undetectably then it should be fine to use it for an unencrypted signal. However, several methods of quantum hacking have already been demonstrated. I have wondered in the past if quantum nondemolition might also be used but I don't know if that's even a sensible suggestion. It's probably not possible because of the no-cloning theorem.

It is instantaneous. Nope, not just really fast to the point of being instantaneous. It is literally instantaneous. If you set one qubit the other is the same, with no delay at all. None.

 

[Asbo Zaprudder]

It is instantaneous. Nope, not just really fast to the point of being instantaneous. It is literally instantaneous. If you set one qubit the other is the same, with no delay at all. None.

However, you cannot communicate instantaneously using entanglement. You always need to send at least one conventional bit by other means and that is limited by the speed of light. In any case, simultaneity has no consistent definition for arbitrary frames of reference in Special Relativity. "Now" is a meaningless concept as which events are perceived as simultaneous depends on the frames from which they are measured.

Personally, I favour both the relative-state (many worlds) and superdeterministic interpretations of quantum mechanics. Free will is a delusion. I was always going to type that in at least one branch of all possible realities.

No, We Still Can't Use Quantum Entanglement To Communicate Faster Than Light (forbes.com)