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Scientists Break Quantum Entanglement Record At 18 Qubits (zmescience.com)
hackingbear writes: Researchers at the Chinese University of Science and Technology have demonstrated stable quantum entanglement with 18 qubits, surpassing the previous world record of 10, also held by the same team. This represents a step toward realizing large-scale quantum computing, according to a recent study published in the journal Physical Review Letters. Physicist Pan Jianwei and his colleagues achieved the new record by simultaneously exploiting three different degrees of freedom-paths, polarization and orbital angular momentum of six photons, the fundamental particle of light. The outcome combination resulted in a stable 18-qubit state. Full control over the number of entangled particles determines the fundamental ability for quantum information processing, according to the study. There are early-stage quantum computers out there that argue more qubits -- such as IBM's 50-qubit machine and Google's 72-qubit Bristlecone, but in those cases, the individual quantum states of the qubits aren't (fully) controllable. "The team's next step will be to realize a 50-qubit entanglement and manipulation," according to Wang Xilin, a member of the team. The same research team also held the world record on quantum communication distance as well as operating the world's first quantum communication satellite.
640 qubits ought to be enough for anybody.
Comment removed based on user account deletion
Is there any other particle of light other than photon? What does "the fundamental particle of light" mean
...is that it may hit the financial wall sometime in the next 20 years. If the technology doesn't deliver in the foreseable future there's the danger that investors will pull the plug. Also, classical architecture still delivers and 20 years are eons in the computing field. Classic processors will be so advanced by then that QC may be irrelevant.
You have 2 qubits and you don't want to detect their state because that would 'collapse entanglement'.
So instead you add more qubits, and us xor operations so you cannot tell the data qubits state, or the mixer qubits state. You can only determine if they were the same or not, i.e. entangled.
And you pretend this xoring is not detection of the state because you, the experimenter, only know if the item is entangled, not its exact state.
And if it isn't entangled, you throw away the result. i.e. you filter.
So all you've really done is select the subset of experiments that fit your hypothesis.
The entangled particle/photon etc. does not know that you are ignorant of its state. It does not know that your are xoring with another qubits state does not tell you its state. It is not sentient. It does not see the circuit you created.
Why not do the experiment and not look at the success or failure flag. Instead measure all the results, and hand them to another experimenter that has no idea what the experiment is. Let him filter the experiment write it down, and only then tell you the result.
When you find out, does it change the words he wrote on the paper? No.
Just because you didn't know the actual state, you still filtered based on a 'success' flag.
quit your nonsense.
It's Not The End Of IT! ;)
an ansible
No, it is the CHINESE ansible
Compulsory stealing and cheating required
Great Blog keep up the good work
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and encrypted data will have a hard time...
Slashdot, fix the reply notifications... You won't get away with it...
One of the linked articles claims that another team set the 'real' record at 20 qbits...
assignment != equality != identity
Yawn.
Wow... they broke quantum entanglement? Nice!
I mean this is the ship that did the Kessel run in 11 parsecs. How many qubits is that?
LOL
Are you fucking kidding. Christians aren't the problem for science in the US.
The Left is.
SJWs/Feminists/Far Left are attacking STEM is US universities... demanding quotas instead of quality, using violence against biologists... harassing scientists who refuse to teach blatantly anti-scientific nonsense.
If you actually care about science... start defending STEM fields against this bullshit.
Due to the nature (and implementation) of Shor's Algorithm, which is used in factoring large integer on a quantum computer, the ammount of qbits needed to factor an n-bit integer is actually 2n+3. So you can snooze a bit longer... ;)
Source: https://arxiv.org/abs/quant-ph/0205095
A Feymann theoretical quantum computer would go through all states instantaneously and find a perfect solution. But nobody has such a thing.
What they have is analogue computers using various properties, e.g. superconduction magnetics, spinning calcium atoms, etc. Those they try to configure into a circuit to solve a problem.
It's not instantaneous, these networks don't settle down immediately, and it doesn't always get an optimal result (in cases where alternate digital algos exist those have found better solutions). Failing on both Feymanns tests, they are to quantum anything.
The rest of your comment relates to 'classical' computing, and is really an appeal to modernity. But I'd like to point out that analogue computers were how computers were *before* digital computers came along. They are the older computer, and they were the computers of Feymans days.
If they would lose the quantum bullshittery and make a modern analogue computer, no longer the valve and filaments thing of the 50's, they could actually make a damn useful machine. A configurable analogue circuit that settles to a defined (configurable) constrained state as fast as possible (i.e. stop chasing instantaneous), suddenly we have a coprocessor that would be damn useful for a lot of math and if you can build hierarchies of these in the chip then even useful for DNNs.
So I partly agree that this is an area for research, but wish they'd end the quantum bullishittery and get on with a proper stab at analogue.
You are assuming the Chinese are telling the truth about what they've done and not performing a tail wiggling exercise for their State and its funding.
Re the fundamentalist Christian state, let me remind you the fundamentalists have a direct line to G-d through the Archangels....Gomer and Goober.
I think you wrote The Right wrong.
They are the ones refusing to listen to scientists, they are the ones pushing their religious agenda over scientific facts. You can't continue blaming everyone else when it's obvious the main problems when it comes to technological advancement, is far Right who are scared of science. Just the fact that we had a Climate Change denier at the head of the EPA for months, the agency that really should be 100% based around science and not on "feelings" or "God", shows that there's a problem with the current government.
Who let that fruitloop out of his cage?
Actually the leader of your cult has been lying to you about 'Jewish media'. Now go back to your bunker...
The whole quantum computing concept is based on the presumption that quantum entanglement is an ontological phenomenon, a "resource". However, if entanglement turns out to be a mere epistemological effect (telling us more about what we know or what we can not know than about what is really there), then quantum computer will never outperform the scaling of classical computing.
Bell's inequality and the related experiments have ruled out naive hidden variables IF quantum interactions are local and causal. But what if nature really is non-local (as in Bohm's pilot wave interpretation) or non-causal (as in Watanabe's Two-State Vector Formalism)? Then quantum computers will turn out to be a sophisticated version of classical analog computers.
I would not bet my money on quantum computing.
I have quantum diarrhea.
Are you serious
I think it's almost always a mistake to assume linear progress on R&D -- a single breakthrough can drastically alter time-lines.
... photons, the fundamental particle of light.
The photon is the fundamental quantum of light.
It little behooves the best of us to comment on the rest of us.
What's a cubit?
I know. But due to the general cluelesness observable here on this topic, I uses 1QBit/1bit as an obvious lower bound.
Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
Observable facts say linear or worse, and there have been quite a few breakthroughs to allow even that.
My guess is that the idea of the QC will end up on the trash-heap of science, like converting lead to gold. Possible today, but completely useless.
Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
Oh FFS, get back on your meds
See subject: "Imitation=sincerest form of flattery" PROVING u WISH u were ME & poor imitation = u.
* I don't post on hosts in topics that don't fit it (unless u of "moron kind" bring it up 1st)
(Hence, you give yourself away you're impersonating me!)
APK
P.S.=> What are you trying (& failing) to accomplish? Trying to "make me look bad"?? I have to ask as it's EXTREMELY DIFFICULT for me to "think like 'your kind'" (no-mind do-NOTHING "ne'er-do-wells" that can't think, lol) to even TRY to understand your "mental processes" (none obviously that are up to any good)... apk
You're assuming factoring the number is required. There are other ways to crack RSA. These may be stupider on a regular computer, but work well on a quantum one.
Your ad here. Ask me how!
Wait a second. Zontar The Mindless admits to being a self medicating drug addict that has to see shrinks, not apk. Zontar take your own advice.
When they get to 300, sh*t's gonna get real.
Neither Christians nor the far right have any influence at all in academia.
Anyone claiming they do either can't read stats, is 'Freedom is slavery' deluded type, or a deliberately trying to deceive you.