(Fig.1) IBM quantum computer is useless with No progress = their error rates are still too high, Not decreasing at all even in their latest largest 127-qubit computers → so they try to rely on illegitimate trick or ad-hoc error model in vain, while ordinary classical computers are far more useful, accurate and faster
IBM quantum computers are still error-prone, impractical and far inferior to ordinary classical computers.
Trump arraignment in Miami was extremely unusual for the 'former' president, and full of "contradictions" and "paradox" like the current problematic mainstream physics, quantum mechanics and Einstein relativistic theory.
Many police officers, massive motorcade, ambulance and even the police helicopter escorted the alleged "former president" all the way by closing the roads, as if Trump is a 'sitting' president in quantum parallel or 'single' real world.
This is completely contradictory and different from other former presidents with far smaller numbers of SUVs, No road closure and No ambulance, hence, sometimes they collided with civilian cars.
Contrary to the original Biden's pro-China policy, Taiwan was unusually invited to the Biden's (weird) inauguration for the first time, where Trump brought "nuclear football" back to his home in Florida by air force one, but the media and the current weaponized justice system (= unfairly ignoring the most horrifying election frauds ) paradoxically did Not criticize him for keeping "nuclear weapon's classified documents or e-mails" then.
Pence also could use the air force two even after the Biden's inauguration, unlike other ex-vice-presidents using ordinary trains or cars back home, this is clearly one of spooky 'quantum mechanical paradoxes'.
All of these indicate the current Biden and Harris are illusory body doubles ( real Harris does not seem to be so often 'laughing' ), and all the media across the world desperately try to hide this fact and the election fraud even by using fake White house CG (= man in the background is unrealistically walking on the tree instead of the path, compared with this ).
The unfounded-global-warming advocate AOC (= real ) is also body double (= their eyes, ways of talking, and their right ear's upper-front part covered by weird pin are different ) prepared by CNN.
In fact, it's Not unusual that all the media are stifling the truth and misleading us by artificially creating fake computer graphics even in the current contradictory, useless mainstream 'science'.
Quantum mechanical (faster-than-light) electron's spinning (= the unreal electron's spin itself is unobservable and illusion, all we can detect is electron's magnetic moment and energy-level, which can be perfectly explained by Bohr-Sommerfeld model without electron spin ), parallel-universe wavefunction, photon, superluminal entanglement, dead-alive cat, extra-dimensions, BigBang, black hole, virtual and fictitious quasi-particles, sound phonon split into parallel worlds are all imaginary CG created by the media and academia for a long time to deceive us.
They endlessly and meaninglessly keep hyping and promoting the dead-end hopeless technology such as parallel-world quantum computers to protect their vested interests based on the fake mainstream science, which is harmful, blocking the technological innovation or curing diseases forever.
The current unrealistic mainstream physics, quantum mechanics is buried under a lot of hypes and illusions created by the media and academia for a long time to conceal the miserable fact that it has been already a hopeless and deadend science just wasting taxpayers' money.
Atomic clocks using some atomic energy levels, NMR using the experimentally-observed atomic magnetic properties, and transistors using experimentally-observed electric conductance are all unable to prove the quantum mechanical (imaginary) description of the electron spin, (fictitious) band model, and photon. ← Concepts of realistic atomic energy levels and magnetic properties already existed before quantum mechanics.
Fake news around this (fantasy) mainstream physics is unchanged or even getting worse.
Again, many media outlets started to make a baseless bogus claim that the latest IBM quantum computer published in Nature might make a major breakthrough potentially surpassing classical supercomputers or something.
Unfortunately, this is also fake science. This IBM quantum computer (= still Not a computer or calculator at all ) is still useless, slower, error-prone, Not surpassing the ordinary practical classical computer ( this 7~12th-paragraphs, this abstract ), so this is another typical example of media-hype.
This 3rd-last paragraph says
"it's Not obvious that they've achieved quantum supremacy here." ← No quantum computer's advantage has been proven in this research.
And this IBM quantum computer is still useless, as this 2nd-last~last paragraphs say
"we don't know if the quantum solutions are right.. the idea is to make quantum computers usable for general problems. We may still be years away from that".
Actually, just 2 weeks after this IBM's (dubious) research paper was published, another team found a better and more accurate classical computer's calculation method outperforming this IBM's quantum computer's (bogus) error-mitigating model, as this 1st paragraph says
"This work gained a lot of hype.. some papers published after this showed a better method for the classical simulation part." ← No quantum computer's utility or advantage
↑ Other physicists also showed that ordinary classical laptop computer can calculate much faster (= took only two minutes, this abstract, p.1-lower ) and more accurately than IBM (dubious) quantum computer's error or noise mitigating method (= which took 4 ~ 9.5 hours as wall-clock time for random error sampling, this 7th-paragraph, this p.10-A ), disproving (illusory) quantum advantage or utility claim made by Nature and hyping media ( this p.1-left ).
IBM boasted of creating the world's largest 433-qubit Osprey quantum computer (= which is still useless, though ).
Strangely, they never made public the detailed data of this alleged largest 433-qubit quantum computer.
In this latest research published in Nature, IBM still used the older 127-qubit eagle quantum computer ( this 3rd paragraph ).
↑ Even this IBM alleged world's largest quantum computer with 433 qubits still falls far short of the target practical computer that will need at least millions of qubits or quantum bits ( this 2nd-paragraph, this summary ), so quantum computer's research is already dead-end with No progress despite the extremely long-time researches across the world.
Furthermore, quantum computers are known to be extremely error-prone and impractical, compared to the ordinary practical classical computers with negligibly-tiny error rates = only 10-17 ~ 10-27 ( this 2nd-paragraph, this 17th-paragraph, this 22th-paragraph, this p.20, this p.8-9 ).
The current quantum computers' error rates are much, much higher = 10-3 ~ 10-2 or 0.1 ~ 1 %, which means one error is generated evey 100 bit manipulation, which is completely useless as computers or calculators ( this 3~4th-paragraphs, this p.1-left, this Why it donesn't matter ).
They are still far from (imaginary) practical computers whose error rates must be lower than 10-15 ( this 3rd-paragraph, this 5th-paragraph, this abstract ) which is impossible to realize forever.
IBM often boasts only of the "number of qubits (= still far from millions of qubits required for practical computer, though )", but their quantum computers' high error rates have Not decreased or improved from the older 65-qubit to the current 127-qubit quantom computers (= both of them still have extremely high error rate = more than 1% or 10-2 error rate in each simple two-qubit gate operation, this p.3-4-Fig.S1 ).
If physicists try to correct those frequent errors by using some error-correction algorithm and increasing error-correction qubits, their error rates miserably get even higher and worse, as shown in the current Google's quantum computer (= the alleged current best error-correction quantum computer ) still generating extremely high error rates = 3% = worsened from their original error-rate of 1~0.1 % by error-correction operation that has an adverse effect ( this 2nd-paragraph, this 3rd-last paragraph, this 10th-paragraph ).
This is why all the current quantum computers are useless and unable to conduct any meaningful calculations, except for outputting random meaningless numbers even in quantum supremacy or advantage researches ( this 5th-paragraph, this 3rd-paragraph, this 3rd-last~8th-last-paragraphs ).
↑ Of course, the ordinary classical computers can output various patterns of random numbers more quickly than quantum computers, hence, No quantum supremacy or advantage. Actually, Google quantum supremacy was officially denied ( this 4th-last paragraph, this introduction-2nd-paragraph )
↑ All the current quantum computers are unable to give right answers due to their extremely high error (or noise ) rates, whether they are random numbers or not, so it is basically impossible to prove quantum computer advantage or the dream-like simultaneous faster parallel-world calculations, hence No practical quantum computers.
This 4th-paragraph says
"The current state of the art is that No experiments have demonstrated quantum advantage for practical tasks yet ( this 3rd-last paragraph, this 8th-paragragh-Caveats, this last-paragraph )"
In spite of this quantum computer's disadvantage, physicists unfairly forced only classical computers to use unrealistically-time-consuming methods of outputting random numbers, which is the trick of fake quantum supremacy, and this is why the (illusory) quantum supremacy is useless for any practical purpose ( this 3rd-paragraph ).
The latest Chinese alleged quantum computer's advantage is also useless and illusion (= caused by falsely treating classical light wave as illusory classical photons with no ability to interfere ), just randomly detecting light or photons, which useless task ( this 2nd-last paragraph ) is called boson sampling (= their latest exaggerated research exploiting this useless random boson sampling has Not proved quantum advantage or speed-up, this last-paragraph, this p.6-right-top ).
The fact that even the current best and largest quantom computers are still extremely error-prone and impractical means their error-correction research has already reached a dead-end with No progress or improvement.
So the leading company IBM finally gave up correcting errors of their error-prone quantum computers, and instead, they try to rely on illegitimate non-standard method, roughly "guess" their error patterns by measurement of some sample errors, and artificially subtract the "guessed" errors from the error-prone quantum computer's unreliable results based on the artificially-created ad-hoc baseless error model called "error mitigation (= instead of true quantum error-correction or QEC, this 17th-paragraph )".
The media reported this IBM quantum computer published in Nature might have potential utility, though it is completely untrue. IBM quantum computer has No utility, like all other impractical quantum computers.
Quantum computer physicists often used an useless abstract unphysical quantum mechanical model called Ising spin model which just artificially chooses and manipulates fictitious interaction parameter = J between two (fictitious) spins (= magnetic moments) to express ferromagnet and anti-ferromagent depending on differently-chosen parameter J value.
↑ This (fictitious) spin-spin interaction parameter J can be freely changed and adjusted to artificially fit the observed magnetic property of (anti-)ferromagnet with No power to predict anything or clarify real mechanism, so useless.
Actually, the unrealistic electron spin's weak magnetic moment cannot explain the strong interaction of the (anti-)ferromagnets, and only the Coulomb interaction caused by the realistic orbital motion (= which causes the same magnetic moment as the spin ) can reasonably explain the stable (anti-)ferromagnetic properties ( this 2-4 paragraphs ).
IBM and Google quantum computers try to treat the (classical) superconducting circuit (= each superconducting qubit or circuit consists of many atoms as one large artificial atom ) as a fictitious spin, where different frequencies (= ω ) of the electric currents I inside each superconducting circuit are supposed to express 0 or 1 qubit state ( this, this 7th-last paragraph, this 6th-paragraph ).
And the different interaction parameter J is expressed by applying different patterns of microwaves to these superconducting circuit qubits and controlling qubit states.
So they claimed when some adjusted microwave (= allegedly expressing the interaction parameter J between fictitious spins ) is applied to qubits several times, and those qubits' 0 or 1 states are measured, they could simulate the (useless quantum mechanical) Ising spin model through imaginary quantum superposition (= each qubit could take 0 and 1 states simultaneously, this 3rd-last paragraph ) or fantasy parallel worlds ( this p.2-left-2nd-paragraph, this p.7-left ).
The problem is physicists often like to make an unfounded claim that these quantum computer's 127 qubits can take 2127 different bitstring patterns (= each qubit takes 0 or 1, hence the total bitstring pattern number is 2127 ), which may indicate quantum computer could realize 2127 parallel worlds or superposition simultaneously ( this quantum amigo, this p.7 ). ← ridiculous
The (illusory) quantum computer's advantage or supremacy based on this unfounded assumption of unobservable quantum superposition or parallel worlds is meaningless, because all we can observe is just only one qubit state (= 0 or 1 ) or only one single world ( this 26-27th paragraphs ), unless they can carry out some useful tasks such as factoring using quantum parallel worlds, which is impossible forever.
Based on this baseless and wrong assumption of the unobservable quantum superposition, they unfairly forced only the classical computer to perform the extremely-time-consuming calculations of all 2127 different patterns simultaneously to simulate or imitate the (unrealistic) unseen quantum parallel worlds, which unfair comparison is the trick of the illusory quantum advantage ( this 15th paragraph, this p.7-Brute-force simulation. p.4-left ).
In this latest IBM research, they actually performed the exact classical computer's simulation of as many as 2127 different bitstring patterns (= allegedly occurring in IBM 127-qubit quantum computer, though it's baseless and unobservable ) and obtained the exact classical simulating results of the quantum Ising model in each different chosen interaction J parameters (= exact classical computer's simulating methods are called "brute force", "tensor network" or MPS, this-abstract ).
On the other hand, IBM 127-qubit quantum computer always gave wrong inaccurate calculated results of the same Ising model (= disagreeing with exact classical computer's simulation ), even in the simplest pattern ( in this Fig.2-3, p.4-left, the exact classical simulation's results are expressed as ideal dot line (= this 1.0 exact classical ideal dot line where "unmitigated values lower than the exact 1.0" mean the original error-prone IBM quantum computer's wrong answers ) & exact gray curved line, this p.14, p.6-D, p.19-lower wrong quantum computer's calculated results G=1.0~1.6 are expressed as the unmitigated green line and small green circle deviating from the exact (classical) simulation of black dot or gray lines )
↑ It means No quantum advantage has been proven, because the erroneous, unpredictable IBM quantum computers could give only wrong results of Ising spin model in various different interaction parameters J.
Actually this last paragraph denies quantum computer outperforming classical computers, saying
"While IBM’s achievement does Not yet establish quantum supremacy.. ( this 4th-last paragraph )"
So, IBM researchers tried to rely on "cheating" by illegitimately creating some dubious ad-hoc "error-mitigating" model or something to artificially adjust their wrong calculated results to the right results simulated by the accurate classical computers, instead of actually correcting errors of quantum computer.
In this illegitimate error-mitigating method, they ridiculously and deliberately increased the machine's errors (= noise amplification ) by randomly flipping 127 qubits, and extrapolate (= roughly guess ) the allegedly-right answers of (imaginary) error-free cases (= extrapolated or guessed mitigated blue circles of this Fig.2-4 ) using those artificially-created error-mitigating model based on randomly-generated unpredictable qubit errors ( this 2-6th paragraphs, this 12-13th paragraphs ), which is a completely unscientific method.
This or this 10th-paragraph says
"quantum error mitigation, a novel technique for dealing with the noise (= errors ) that accompanies a quantum computation. Paradoxically, IBM researchers controllably increased the noise (= deliberately increased errors ! ) in their quantum circuit to get even noisier, less accurate answers and then extrapolated backward to estimate the answer the computer would have gotten if there were no noise. "
↑ In order to prove real quantum computer's advantage, physicists have to obtain the right answers by actually correcting or decreasing errors instead of relying on the dubious ad-hoc unpredictable error-guessing model based on deliberately increasing errors or noise ( this 6-8th paragraphs ).
There is No such thing as "right error-mitigating model", because patterns of errors are basically unpredictable and different in different machines, circumstances, which is why they are called "errors".
And there is No guarantee that this artificially-created ad-hoc 'error-guessing' model is valid also in other different complicated calculations, hence, there is No proof of quantum advantage in this latest IBM research published in Nature.
If the difference between the exact classical computer's simulation (= executing as many as 2N calculations where N is the number of qubit ) and the wrong calculated results of erroneous quantum computer could be precisely predictable in advance by this (dubious) ad-hoc error-guessing or mitigating model as IBM argues, this is Neither quantum computer's advantage nor "out of reach of our ordinary computer" at all.
↑ Because "guessing" right answers (= which definitely needs the exact classical computer's simulation instead of error-prone quantum computer's wrong answers ) without actually letting the quantum computer's calculation get the right answers means there is No quantum computer's advantage.
This 4th-last paragraph says
"Now, this breakthrough isn’t quite quantum supremacy—the ability of quantum computers to solve problems that regular ones can’t. We’re most likely Not there yet (though Google claimed to have hit that milestone in 2019), and some experts don’t think we could ever get there simply through error mitigation."
This or this 8th-last~6th-last paragraphs ( or this 5th-last-6th-last paragraphs ) also say
"It is Not clear that quantum computing is indisputably the winner over classical techniques for the Ising model... It’s Not obvious that they’ve achieved quantum supremacy here."
This 5th-last paragraph also admits,
"This does Not prove quantum computers are now better than classical systems"
This 6th-last paragraph also says
"The researchers caution that while they can't prove that the quantum computer's final answers for the hardest calculations were correct"
This or this 4,8,10th paragraphs say
" the problem they attacked uses a much-simplified, unrealistic model of a material.."
".. conducted precise measurements of the noise (= errors ) in each of their qubits, which can follow relatively predictable patterns (= then, calculation of quantum computer itself is meaningless with No advantage ) determined by their position inside the device, microscopic imperfections in their fabrication and other factors. Using this knowledge, the researchers extrapolated back to what their measurements"
".. Some researchers are less optimistic about the potential of noise mitigation (= done by this IBM ), and expect that only quantum error correction (= still impossible ) will enable calculations that would be impossible on even the largest classical supercomputers ( this 3rd-paragraph )." ← No quantum computer's advantage.
↑ Soon after IBM claimed their 127-qubit eagle quantum computer could simulate some (useless) numbers allegedly intractable for classical computers using illegetimate error-mitigation model without correcting errors in Nature, many physicists showed ordinary classical computers could easily calculate those exact values much faster and more accurately than this IBM quantum computer's (dubious) error-mitigation method ( this 7~10th-paragraph, this abstract ).
So quantum computer's advantage or utility officially disappeared ( this abstract, p.1-left ).
--------------------
This ad-hoc noise mitigation by noise amplification and unreliable zero noise extrapolation depends on artificially-created noise model and adjusted parameters ( this p.13 3-4th paragraphs ) which is useless with No ability to predict or calculate unknown values, as this p.5 ( p.8-10 ) and this p.12 say
"However, we caution that the method can provide noise amplification results that arbitrarily deviate from the desired
result when only slightly more complicated noise models are considered."
This
p.3-left~right says
"ZNE (= zero-noise extrapolation) uses noisy expectation values of an observable of interest X obtained from the quantum circuit
of interest U run at increased noise to extrapolate to
the noise-free limit... approaches for noise characterized by multiple parameters have been postulated.. "
".. the best choice of the ansatz used to perform the extrapolation is not known a priori. Also, a controlled increase of the noise strength is hardware dependent and may be challenging to implement in practice."
Actually, just 2 weeks after this IBM paper was published in Nature, more accurate classical computer simulating method outperforming this (illusory) error-prone quantum computers was found ( this lower ), hence this (illegitimate) error-mitigating quantum computer advantage (= without error correction ) is officially gone.
This latest research's abstract says
"We report an accurate, memory and time efficient classical simulation of a 127-qubit kicked Ising
quantum system on the heavy-hexagon lattice. A simulation of this system on a quantum processor
was recently performed using noise mitigation techniques to enhance accuracy (Nature volume 618,
p. 500–505 (2023)). Here we show that, by adopting a (classical) tensor network approach that reflects the qubit
connectivity of the device, we can perform a classical simulation that is significantly more accurate
than the results obtained from the quantum device in the verifiable regime and comparable to the
quantum simulation results for larger depths"
↑ Anyway, as long as quantum computers are too error-prone and always giving wrong calculated results as shown in these latest IBM and Google quantum computers, it is intrinsically impossible for such an error-prone quantum computer to outperform the current excellent practical classical computers with No errors.
2023/6/17 updated. Feel free to link to this site.
