[ 3 / biz / cgl / ck / diy / fa / ic / jp / lit / sci / vr / vt ] [ index / top / reports ] [ become a patron ] [ status ]
2023-11: Warosu is now out of extended maintenance.

/sci/ - Science & Math

View post   
File: 26 KB, 590x350, images.jpg [View same] [iqdb] [saucenao] [google]
10826771 No.10826771 [Reply] [Original]

What kind of practical applications of quantum physics (mainly entanglement) can we hope to see in the future?

>> No.10826780

>>10826771
It's useful for quantum computing, so if you believe google and those other big companies you will see it used in the first quantum supremacy computers in the next couple years, where they'll be performing the actually fairly useless task of some random matrix calculation. Anything beyond that is a bit unknown since it's not clear quantum computers will ever be sufficiently powerful for the real applications.

There's also some interest in the presence of entanglement in things like photosynthesis which might be relevant for people doing artificial photosynthesis.

>> No.10826789

>>10826780
Whoa that sounds wacky. Didnt realise photosynthesis had quantum effects in it

>> No.10827310

>>10826771
Cold fusion maybe if somebody get's it done.

>> No.10827318

>>10826771
There are already tons that have been in use for decades. ""Entangled photons"" have been in use in coherent light fiber optics for a long time.

>> No.10827635

>>10826789
Photosynthesis is the most fascinating chemical reaction. There is still so much unknown about. Even complex advanced CCSD(t) calculations don't model it correctly.

>> No.10827638

Quantum computers were a meme and aren't seeing much new research anymore. Maybe one day in space. But cooling and tuning is just not worth it for the for the handful of applications at which they outperform conventional computers.

>> No.10827644

>>10826771
Entanglement could yield immediate and completely private communications. Zero latency.

>> No.10827666

>>10826771
communication (across AU distances), encryption, protecting species and genetic diversity (if that becomes an issue humans care about or animals become rare)

it also offers an opportunity to test classic sci fi tropes of FTL. in this case information will travel faster than light, since you are entangling something, separating it, then causing perturbations in the spin-states of the entangled something through observations, yielding information. all human knowledge is electrical signals so you just need an on off switch to retrofit everything in the world that we use to now exploit this quantum effect and allow for cheaper and more efficient gadgets.

i make two quantum phones and send you one, i can talk to you through it, but there is no travel time through space for my message since i am not really talking to you, i am modifying something you are holding by modifying something i am holding. for it to really 'work' we would need perfect fidelity.

eg. build a regular computer synthesizer for my voice, face, etc. then i am just sending instructions to your local digital puppet of me through entangled spin states of subatomic particles. it'll be some little tube or capsule in your device which a laser shines on and integrates the signals it detects into the rest of the circuitry that makes the whole thing work.

>> No.10827669

>>10827644
It doesn't really work like that though. There has never been an observed entangled state of two particles seperated by by such distances that superluminal communication is confirmed.

>> No.10827684

>>10827669
Distance is relative. You can prove this by using an existing communicator and extrapolating the ratios of the communication.

>> No.10827743

>>10826771
Quantum sensors. They can be very sensitive. Like your phone could figure out where you are as good as GPS without GPS using dead reckoning.

>> No.10827951

>>10827669
Weren't some nobel prizes handed out for people who did exactly this, with some several km long test of bell's inequalities?

>> No.10828005

You can use entanglement to communicate at ftl speeds. It simply doesn't work like that.

>> No.10828015

>>10827951
Disregard this, I think I might have misunderstood your post after reading the chain.

>> No.10828026

>>10827644
Wrong. You can't send information faster than light speed.

>> No.10828094

>>10826771
Nuclear bomb.

>> No.10828104

>>10827644
>>10827666
FTL doesn't exist, flatearthers. Doesn't matter how many retards say otherwise.

>> No.10828260

>>10828094
>Nuclear bomb is quantum theory
>Strong force has no analytical potential
What did he mean this?

>> No.10828987
File: 21 KB, 600x397, UTTR_Testbeam_web.jpg [View same] [iqdb] [saucenao] [google]
10828987

The ability to honk a collminated beam of positronium directly from the quantum vacuum by zapping ultra-cold alkali metallic gases with a big fucking laser and amplifying the associated plasmonic wave past the Schwinger limit.