Re: Quantum computing is like QAnon?

[Jason Resch]

Brent,

I think that's the main utility. Perfect simulations of atomic interactions
will enable the virtual testing and design of nanomachines.

Once we have nanomachines then we have star-trek-style replicators
(molecular assemblers).

Jason

On Tue, Jul 7, 2020 at 1:06 PM 'Brent Meeker' via Everything List <
everything-list@googlegroups.com> wrote:

> I thought the big application of QC after encryption, was going to be
> protein folding and similar biomolecular interactions.
>
> Brent
>
> On 7/7/2020 4:56 AM, Philip Thrift wrote:
>
>
> Dr. B may still be right though.
>
> 30 years from now quantum computers (as promoted in 2020) will still have
> no impact on practical computing applications. Maybe in cryptography, or
> maybe not.
>
> Though quantum aspects in materials science could turn out to be useful,
> so its impact on computing will be of a peripheral nature (in sensors,
> etc.).
>
> @philipthrift
>
> On Tuesday, July 7, 2020 at 5:59:54 AM UTC-5 johnk...@gmail.com wrote:
>
>> On Tue, Jul 7, 2020 at 6:44 AM Bruno Marchal  wrote:
>>
>>  > *If we can factorise a number sensibly bigger than 15 in my lifetime,
>>> I will be impressed*
>>
>>
>> Back in 2017 the number 291,311 was factored by a quantum computer:
>>
>> The experimental factorization of 291311
>> 
>>
>> John K Clark
>>
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Re: Quantum computing is like QAnon?

[Lawrence Crowell]

On Friday, July 10, 2020 at 7:11:39 AM UTC-5, Bruno Marchal wrote:
>
>
> On 9 Jul 2020, at 13:14, Lawrence Crowell  > wrote:
>
> On Thursday, July 9, 2020 at 5:59:04 AM UTC-5, Bruno Marchal wrote:
>>
>>
>> On 7 Jul 2020, at 20:05, 'Brent Meeker' via Everything List <
>> everyth...@googlegroups.com> wrote:
>>
>> I thought the big application of QC after encryption, was going to be 
>> protein folding and similar biomolecular interactions.
>>
>>
>>
>> That is how Feynman discovered quantum computation, in a more informal 
>> way than Deutsch quantum universal Turing machine. 
>>
>> You thought? What did change your mind? Quantum simulation will be the 
>> main application of quantum computations for the millennia to come … once 
>> we get genuine big frame quantum computer.
>>
>> I agree with Clark that topological quantum computation is the most long 
>> term promising path, but to squeeze an electron and braid its plane moves 
>> requires immense apparatus/magnet. The first genuine quantum computing 
>> machine might be very huge. That will not easily been miniaturised. But 
>> then IBM was using giant trucks to transport for its first 5Mb hard drive 
>> in 1955, and I expect huge progress in condoned matter physics, and some 
>> serendipitous discovery along the way…
>>
>> Bruno
>>
>>
> Graphene reduces the dimension of QM to 2-space plus time. In effect it is 
> two dimension if the wavelength of quantum states is longer than any atomic 
> thickness to the sheets. 
>
>
> Interesting. I can conceive this makes sense, but I am not sure this 
> indicates that we could use Graphene for quantum topological computation. I 
> am not sure you could consider the electron of a layer of graphene to be 
> “squeezed” in 2D, at least in a manner so that you can build a braid and 
> get a topological qubit. (I guess that you are not implying that in 
> graphene the electron themselves are confined in a 2D space?).
>
> Bruno
>
>
>
If there are no eigenstates in the direction perpendicular to the graphene 
sheet, then from a quantum mechanical perspective that dimension does not 
exist. QM is a bit strange that way, but what counts are not continuum 
ideas of space, but rather whether there are eigenstates that have 
observables corresponding to a particular direction.

LC
 

>
> LC
>  
>
>>
>>
>>
>> Brent
>>
>> On 7/7/2020 4:56 AM, Philip Thrift wrote:
>>
>>
>> Dr. B may still be right though. 
>>
>> 30 years from now quantum computers (as promoted in 2020) will still have 
>> no impact on practical computing applications. Maybe in cryptography, or 
>> maybe not.
>>
>> Though quantum aspects in materials science could turn out to be useful, 
>> so its impact on computing will be of a peripheral nature (in sensors, 
>> etc.).
>>
>> @philipthrift
>>
>> On Tuesday, July 7, 2020 at 5:59:54 AM UTC-5 johnk...@gmail.com wrote:
>>
>>> On Tue, Jul 7, 2020 at 6:44 AM Bruno Marchal  wrote:
>>>
>>>  > *If we can factorise a number sensibly bigger than 15 in my 
 lifetime, I will be impressed*
>>>
>>>
>>> Back in 2017 the number 291,311 was factored by a quantum computer:
>>>
>>> The experimental factorization of 291311 
>>> 
>>>
>>> John K Clark
>>>
>> -- 
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>>  
>> 
>> .
>>
>>
>>
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>>  
>> 
>> .
>>
>>
>>
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>  
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> .
>
>
>

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Re: Quantum computing is like QAnon?

[Bruno Marchal]

> On 9 Jul 2020, at 13:14, Lawrence Crowell  
> wrote:
> 
> On Thursday, July 9, 2020 at 5:59:04 AM UTC-5, Bruno Marchal wrote:
> 
>> On 7 Jul 2020, at 20:05, 'Brent Meeker' via Everything List 
>> > wrote:
>> 
>> I thought the big application of QC after encryption, was going to be 
>> protein folding and similar biomolecular interactions.
> 
> 
> That is how Feynman discovered quantum computation, in a more informal way 
> than Deutsch quantum universal Turing machine. 
> 
> You thought? What did change your mind? Quantum simulation will be the main 
> application of quantum computations for the millennia to come … once we get 
> genuine big frame quantum computer.
> 
> I agree with Clark that topological quantum computation is the most long term 
> promising path, but to squeeze an electron and braid its plane moves requires 
> immense apparatus/magnet. The first genuine quantum computing machine might 
> be very huge. That will not easily been miniaturised. But then IBM was using 
> giant trucks to transport for its first 5Mb hard drive in 1955, and I expect 
> huge progress in condoned matter physics, and some serendipitous discovery 
> along the way…
> 
> Bruno
> 
> 
> Graphene reduces the dimension of QM to 2-space plus time. In effect it is 
> two dimension if the wavelength of quantum states is longer than any atomic 
> thickness to the sheets. 

Interesting. I can conceive this makes sense, but I am not sure this indicates 
that we could use Graphene for quantum topological computation. I am not sure 
you could consider the electron of a layer of graphene to be “squeezed” in 2D, 
at least in a manner so that you can build a braid and get a topological qubit. 
(I guess that you are not implying that in graphene the electron themselves are 
confined in a 2D space?).

Bruno


> 
> LC
>  
> 
> 
>> 
>> Brent
>> 
>> On 7/7/2020 4:56 AM, Philip Thrift wrote:
>>> 
>>> Dr. B may still be right though.
>>> 
>>> 30 years from now quantum computers (as promoted in 2020) will still have 
>>> no impact on practical computing applications. Maybe in cryptography, or 
>>> maybe not.
>>> 
>>> Though quantum aspects in materials science could turn out to be useful, so 
>>> its impact on computing will be of a peripheral nature (in sensors, etc.).
>>> 
>>> @philipthrift
>>> 
>>> On Tuesday, July 7, 2020 at 5:59:54 AM UTC-5 johnk...@gmail.com <> wrote:
>>> On Tue, Jul 7, 2020 at 6:44 AM Bruno Marchal > wrote:
>>> 
>>>  > If we can factorise a number sensibly bigger than 15 in my lifetime, I 
>>> will be impressed
>>> 
>>> Back in 2017 the number 291,311 was factored by a quantum computer:
>>> 
>>> The experimental factorization of 291311 
>>> 
>>> 
>>> John K Clark
>>> -- 
>>> You received this message because you are subscribed to the Google Groups 
>>> "Everything List" group.
>>> To unsubscribe from this group and stop receiving emails from it, send an 
>>> email to everyth...@googlegroups.com .
>>> To view this discussion on the web visit 
>>> https://groups.google.com/d/msgid/everything-list/e9c1b6d8-5ba1-4a43-96ba-6daad2ccb575n%40googlegroups.com
>>>  
>>> .
>> 
>> 
>> -- 
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>>  
>> .
> 
> 
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Re: Quantum computing is like QAnon?

[Lawrence Crowell]

Quantum annealing is a quantum form of neural net. The Lagrangian form used 
in neural networks is quantized. The minimal configuration a neural network 
enters into as the "solution" is simply the attractor point or set for a 
quantum system. This is not quite the same as quantum computing with 
quantum bits. This is also in some ways sem-classical.

LC

On Thursday, July 9, 2020 at 6:19:55 AM UTC-5, John Clark wrote:
>
> On Thu, Jul 9, 2020 at 6:49 AM Bruno Marchal  > wrote:
>
> *> I am not sure that adiabatic computation is “real” quantum computation. 
>> I have the same problem with quantum annealing, *
>
>
> That is a valid point. I'm not sure it's real quantum computing either, 
> but whatever it is it's doing some interesting stuff.
>
>  John K Clark 
>
>
>>

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Re: Quantum computing is like QAnon?

[John Clark]

On Thu, Jul 9, 2020 at 6:49 AM Bruno Marchal  wrote:

*> I am not sure that adiabatic computation is “real” quantum computation.
> I have the same problem with quantum annealing, *


That is a valid point. I'm not sure it's real quantum computing either, but
whatever it is it's doing some interesting stuff.

 John K Clark


>

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Re: Quantum computing is like QAnon?

[Lawrence Crowell]

On Thursday, July 9, 2020 at 5:59:04 AM UTC-5, Bruno Marchal wrote:
>
>
> On 7 Jul 2020, at 20:05, 'Brent Meeker' via Everything List <
> everyth...@googlegroups.com > wrote:
>
> I thought the big application of QC after encryption, was going to be 
> protein folding and similar biomolecular interactions.
>
>
>
> That is how Feynman discovered quantum computation, in a more informal way 
> than Deutsch quantum universal Turing machine. 
>
> You thought? What did change your mind? Quantum simulation will be the 
> main application of quantum computations for the millennia to come … once 
> we get genuine big frame quantum computer.
>
> I agree with Clark that topological quantum computation is the most long 
> term promising path, but to squeeze an electron and braid its plane moves 
> requires immense apparatus/magnet. The first genuine quantum computing 
> machine might be very huge. That will not easily been miniaturised. But 
> then IBM was using giant trucks to transport for its first 5Mb hard drive 
> in 1955, and I expect huge progress in condoned matter physics, and some 
> serendipitous discovery along the way…
>
> Bruno
>
>
Graphene reduces the dimension of QM to 2-space plus time. In effect it is 
two dimension if the wavelength of quantum states is longer than any atomic 
thickness to the sheets. 

LC
 

>
>
>
> Brent
>
> On 7/7/2020 4:56 AM, Philip Thrift wrote:
>
>
> Dr. B may still be right though. 
>
> 30 years from now quantum computers (as promoted in 2020) will still have 
> no impact on practical computing applications. Maybe in cryptography, or 
> maybe not.
>
> Though quantum aspects in materials science could turn out to be useful, 
> so its impact on computing will be of a peripheral nature (in sensors, 
> etc.).
>
> @philipthrift
>
> On Tuesday, July 7, 2020 at 5:59:54 AM UTC-5 johnk...@gmail.com wrote:
>
>> On Tue, Jul 7, 2020 at 6:44 AM Bruno Marchal  wrote:
>>
>>  > *If we can factorise a number sensibly bigger than 15 in my lifetime, 
>>> I will be impressed*
>>
>>
>> Back in 2017 the number 291,311 was factored by a quantum computer:
>>
>> The experimental factorization of 291311 
>> 
>>
>> John K Clark
>>
> -- 
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>  
> 
> .
>
>
>
> -- 
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>  
> 
> .
>
>
>

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Re: Quantum computing is like QAnon?

[Bruno Marchal]

> On 7 Jul 2020, at 20:05, 'Brent Meeker' via Everything List 
>  wrote:
> 
> I thought the big application of QC after encryption, was going to be protein 
> folding and similar biomolecular interactions.


That is how Feynman discovered quantum computation, in a more informal way than 
Deutsch quantum universal Turing machine. 

You thought? What did change your mind? Quantum simulation will be the main 
application of quantum computations for the millennia to come … once we get 
genuine big frame quantum computer.

I agree with Clark that topological quantum computation is the most long term 
promising path, but to squeeze an electron and braid its plane moves requires 
immense apparatus/magnet. The first genuine quantum computing machine might be 
very huge. That will not easily been miniaturised. But then IBM was using giant 
trucks to transport for its first 5Mb hard drive in 1955, and I expect huge 
progress in condoned matter physics, and some serendipitous discovery along the 
way…

Bruno



> 
> Brent
> 
> On 7/7/2020 4:56 AM, Philip Thrift wrote:
>> 
>> Dr. B may still be right though.
>> 
>> 30 years from now quantum computers (as promoted in 2020) will still have no 
>> impact on practical computing applications. Maybe in cryptography, or maybe 
>> not.
>> 
>> Though quantum aspects in materials science could turn out to be useful, so 
>> its impact on computing will be of a peripheral nature (in sensors, etc.).
>> 
>> @philipthrift
>> 
>> On Tuesday, July 7, 2020 at 5:59:54 AM UTC-5 johnk...@gmail.com 
>>  wrote:
>> On Tue, Jul 7, 2020 at 6:44 AM Bruno Marchal > > wrote:
>> 
>>  > If we can factorise a number sensibly bigger than 15 in my lifetime, I 
>> will be impressed
>> 
>> Back in 2017 the number 291,311 was factored by a quantum computer:
>> 
>> The experimental factorization of 291311 
>> 
>> 
>> John K Clark
>> -- 
>> You received this message because you are subscribed to the Google Groups 
>> "Everything List" group.
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>> https://groups.google.com/d/msgid/everything-list/e9c1b6d8-5ba1-4a43-96ba-6daad2ccb575n%40googlegroups.com
>>  
>> .
> 
> 
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Re: Quantum computing is like QAnon?

[Bruno Marchal]

Re: Quantum computing is like QAnon?

[Philip Thrift]

In bioengineering:

https://medium.com/neodotlife/quantum-computing-for-protein-folding-custom-biology-4ceeebb94a5b

*In recent months, software engineers in my lab have been getting ready, 
retooling our protein-design software to run on quantum processors. Instead 
of going on random walks, we hope to zero in on new strings of amino acids 
that fold up into new proteins with bespoke properties.*

There are two separate things:
(A) waiting for quantum computers to run modeling programs on (simulation)
(B) using the inherent quantum mechanics of biomolecules to make new 
biological things
  (synthetic biology, https://www.nature.com/articles/s41467-019-13232-z
 etc.)

It seem likely (A) is pretty hopeless. (Conventional supercomputers will 
have to do.)

@philipthrift

On Tuesday, July 7, 2020 at 1:06:01 PM UTC-5 Brent wrote:

> I thought the big application of QC after encryption, was going to be 
> protein folding and similar biomolecular interactions.
>
> Brent
>
> On 7/7/2020 4:56 AM, Philip Thrift wrote:
>
>
> Dr. B may still be right though. 
>
> 30 years from now quantum computers (as promoted in 2020) will still have 
> no impact on practical computing applications. Maybe in cryptography, or 
> maybe not.
>
> Though quantum aspects in materials science could turn out to be useful, 
> so its impact on computing will be of a peripheral nature (in sensors, 
> etc.).
>
> @philipthrift
>
> On Tuesday, July 7, 2020 at 5:59:54 AM UTC-5 johnk...@gmail.com wrote:
>
>> On Tue, Jul 7, 2020 at 6:44 AM Bruno Marchal  wrote:
>>
>>  > *If we can factorise a number sensibly bigger than 15 in my lifetime, 
>>> I will be impressed*
>>
>>
>> Back in 2017 the number 291,311 was factored by a quantum computer:
>>
>> The experimental factorization of 291311 
>> 
>>
>> John K Clark
>>
> -- 
>
>
>

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Re: Quantum computing is like QAnon?

[Lawrence Crowell]

On Tuesday, July 7, 2020 at 5:44:55 AM UTC-5, Bruno Marchal wrote:
>
>
> On 6 Jul 2020, at 14:41, Lawrence Crowell  > wrote:
>
> On Monday, July 6, 2020 at 6:46:16 AM UTC-5, John Clark wrote:
>>
>> On Mon, Jul 6, 2020 at 6:19 AM Philip Thrift  wrote:
>>
>> Sabine Hossenfelder @skdh
>>>
>>
>>  > *Take it from me when I say no nation on this planet is doing 
>>> strategic planning on quantum computers.*
>>
>>  
>> NSA, Army Seek Quantum Computers Less Prone to Error 
>> 
>>  
>>
>> The Pentagon is Trying to Secure Its Networks Against Quantum Codebreakers 
>> 
>>
>> John K Clark
>>
>
> This may be the case. Quantum computing is interesting, and with the IBM 
> QE I wrote a couple of simple codes to prepare entangled states and to flip 
> them in a Hadamard gate. The QE runs at 50 qubits, which is a narrow path 
> so to speak. It is also an ungainly thing that sits in a cryro-tank. Maybe 
> diamond with nitrogen atoms at specific locations will lead to practical 
> q-computers. The big issue needed to be cracked is quantum error 
> correction, where progress on this in time may lead to more practical 
> quantum computers or processors that might in the future enter into 
> computers. It is possible in a few decades that quantum computers might 
> begin to appear all around us. It will probably take a fair amount of time.
>
> Sabine's assessment of quantum metrology over quantum computing is 
> probably correct in the next decade or two.
>
>
> I agree. The work of Kitaev and Friedmann have convinced me that quantum 
> computer will exist, like the theorem of Shannon has shown that 
> telecommunication is possible. Now, the tasks which remain are quite 
> difficult, and I have no idea if this will take some decades, a century or 
> a millenium.  If we can factorise a number sensibly bigger than 15 in my 
> lifetime, I will be impressed…, but I have few doubt that in some future, 
> quantum computing will work, probably for the military before the general 
> public. China seems to have already build telephone nets which seems to be 
> quantum secured, although it is hard to verify. Quantum Cryptographic 
> applications will precede computations per se.
>
> I am not at ease with what the human will do with such a technology, but 
> that’s another matter.
>
> Bruno
>
>
>
Kitaev pioneered nonabelian anyons. The horizon of a black hole has two 
spatial dimensions, which means all QFTs on the stretched horizon are 
anyonic. This means all QFTs holographically projected into the spacetime 
bulk have the same fundamental data. This comports with Wigner's small 
group theory, where fundamental physics is with small groups and 
symmetries. Large groups emerge from degeneracy splitting or as broken 
symmetry versions of large groups.

Quantum computing can solve a set of problem not contained in the set P for 
standard computing. These are bounded quantum polynomial sets of 
algorithms. It was hoped that quantum computers could solve NP problems in 
P space/time, but the need for a classical key transmission demolishes 
this. They are faster in principle and may run faster based on physical 
differences instead of mathematical ones. The Shor algorithm does 
illustrate an in-principle almost instantaneous speed for factorization. If 
we could do quantum computing we could do even better. The near horizon 
condition of a black hole hole is an anti-de Sitter spacetime, and a 
standard computer connected to such will have a time-looping or closed 
timelike curve system where by it can refine a quantum computation. 

A quantum computer works by constructive and destructive interference. This 
means a quantum computing output is really a sort of Fourier 
transformation. The need for a classical key destroys the NP = P 
possibility with q-computering. However, if we could couple this to a 
closed timelike curved processor, the constructive and destructive 
interference would occur in a sense out of time. It is a bit like the old 
cheat of inventing a time machine based on a set of theories and specs, 
building the machine and sending those plans back in time to yourself. 

Of course we do not have a black hole to do this, but we might get the next 
best thing, a quark-gluon plasma. The IR Feynman diagrams of quarks and 
gluons in this are divergent in number, and it is in principle possible I 
think to emulate a holographic setting. Using a quark-gluon plasma as a 
computing system is obviously not easy as plucking one out of the LHC ALICE 
detector to actually compute with would be a hard trick.

LC

 

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Re: Quantum computing is like QAnon?

['Brent Meeker' via Everything List]

I thought the big application of QC after encryption, was going to be 
protein folding and similar biomolecular interactions.


Brent

On 7/7/2020 4:56 AM, Philip Thrift wrote:


Dr. B may still be right though.

30 years from now quantum computers (as promoted in 2020) will still 
have no impact on practical computing applications. Maybe in 
cryptography, or maybe not.


Though quantum aspects in materials science could turn out to be 
useful, so its impact on computing will be of a peripheral nature (in 
sensors, etc.).


@philipthrift

On Tuesday, July 7, 2020 at 5:59:54 AM UTC-5 johnk...@gmail.com wrote:

On Tue, Jul 7, 2020 at 6:44 AM Bruno Marchal  wrote:

> /If we can factorise a number sensibly bigger than 15 in my
lifetime, I will be impressed/


Back in 2017 the number 291,311 was factored by a quantum computer:

The experimental factorization of 291311


John K Clark

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Re: Quantum computing is like QAnon?

[John Clark]

On Tue, Jul 7, 2020 at 7:56 AM Philip Thrift  wrote:

*> 30 years from now quantum computers (as promoted in 2020) will still
> have no impact on practical computing applications.*
>

Did you use a quantum computer to obtain that forecast or just conventional
computing? Is your methodology more reliable than weather forecasting?

*> Though quantum aspects in materials science could turn out to be useful,
> so its impact on computing will be of a peripheral nature (in sensors,
> etc.).*
>

Sounds to me like you're whistling past the graveyard...don't worry...
nothing to upset the social order here.

John K Clark

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Re: Quantum computing is like QAnon?

[Philip Thrift]

Dr. B may still be right though.

30 years from now quantum computers (as promoted in 2020) will still have 
no impact on practical computing applications. Maybe in cryptography, or 
maybe not.

Though quantum aspects in materials science could turn out to be useful, so 
its impact on computing will be of a peripheral nature (in sensors, etc.).

@philipthrift

On Tuesday, July 7, 2020 at 5:59:54 AM UTC-5 johnk...@gmail.com wrote:

> On Tue, Jul 7, 2020 at 6:44 AM Bruno Marchal  wrote:
>
>  > *If we can factorise a number sensibly bigger than 15 in my lifetime, 
>> I will be impressed*
>
>
> Back in 2017 the number 291,311 was factored by a quantum computer:
>
> The experimental factorization of 291311 
> 
>
> John K Clark
>

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Re: Quantum computing is like QAnon?

[John Clark]

On Tue, Jul 7, 2020 at 6:44 AM Bruno Marchal  wrote:

 > *If we can factorise a number sensibly bigger than 15 in my lifetime, I
> will be impressed*


Back in 2017 the number 291,311 was factored by a quantum computer:

The experimental factorization of 291311


John K Clark

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Re: Quantum computing is like QAnon?

[Bruno Marchal]

> On 6 Jul 2020, at 14:41, Lawrence Crowell  
> wrote:
> 
> On Monday, July 6, 2020 at 6:46:16 AM UTC-5, John Clark wrote:
> On Mon, Jul 6, 2020 at 6:19 AM Philip Thrift  > wrote:
> 
> Sabine Hossenfelder @skdh
> 
>  > Take it from me when I say no nation on this planet is doing strategic 
> planning on quantum computers.
>  
> NSA, Army Seek Quantum Computers Less Prone to Error 
> 
>  
> 
> The Pentagon is Trying to Secure Its Networks Against Quantum Codebreakers 
> 
> 
> John K Clark
> 
> This may be the case. Quantum computing is interesting, and with the IBM QE I 
> wrote a couple of simple codes to prepare entangled states and to flip them 
> in a Hadamard gate. The QE runs at 50 qubits, which is a narrow path so to 
> speak. It is also an ungainly thing that sits in a cryro-tank. Maybe diamond 
> with nitrogen atoms at specific locations will lead to practical q-computers. 
> The big issue needed to be cracked is quantum error correction, where 
> progress on this in time may lead to more practical quantum computers or 
> processors that might in the future enter into computers. It is possible in a 
> few decades that quantum computers might begin to appear all around us. It 
> will probably take a fair amount of time.
> 
> Sabine's assessment of quantum metrology over quantum computing is probably 
> correct in the next decade or two.

I agree. The work of Kitaev and Friedmann have convinced me that quantum 
computer will exist, like the theorem of Shannon has shown that 
telecommunication is possible. Now, the tasks which remain are quite difficult, 
and I have no idea if this will take some decades, a century or a millenium.  
If we can factorise a number sensibly bigger than 15 in my lifetime, I will be 
impressed…, but I have few doubt that in some future, quantum computing will 
work, probably for the military before the general public. China seems to have 
already build telephone nets which seems to be quantum secured, although it is 
hard to verify. Quantum Cryptographic applications will precede computations 
per se.

I am not at ease with what the human will do with such a technology, but that’s 
another matter.

Bruno






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Re: Quantum computing is like QAnon?

[Lawrence Crowell]

On Monday, July 6, 2020 at 2:11:54 PM UTC-5, John Clark wrote:
>
> On Mon, Jul 6, 2020 at 8:41 AM Lawrence Crowell  > wrote:
>
> *> The big issue needed to be cracked is quantum error correction,*
>
>
> If non-abelian anyons exist then you could make a topological quantum 
> computer which would need a lot less quantum error correction, and 
> according to a very recent article such quasiparticles almost certainly do 
> exist.
>
> Direct observation of anyonic braiding statistics at the ν=1/3 fractional 
> quantum Hall state  
>
> John K Clark
>

Yes, the Lie group can serve as a quantum error correction code. In fact 
this is a basis of Conway and Sloane book, where E8 is a Golay error 
correction coder.

LC 

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Re: Quantum computing is like QAnon?

[John Clark]

On Mon, Jul 6, 2020 at 8:41 AM Lawrence Crowell <
goldenfieldquaterni...@gmail.com> wrote:

*> The big issue needed to be cracked is quantum error correction,*


If non-abelian anyons exist then you could make a topological quantum
computer which would need a lot less quantum error correction, and
according to a very recent article such quasiparticles almost certainly do
exist.

Direct observation of anyonic braiding statistics at the ν=1/3 fractional
quantum Hall state  

John K Clark

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Re: Quantum computing is like QAnon?

[Lawrence Crowell]

On Monday, July 6, 2020 at 6:46:16 AM UTC-5, John Clark wrote:
>
> On Mon, Jul 6, 2020 at 6:19 AM Philip Thrift  > wrote:
>
> Sabine Hossenfelder @skdh
>>
>
>  > *Take it from me when I say no nation on this planet is doing 
>> strategic planning on quantum computers.*
>
>  
> NSA, Army Seek Quantum Computers Less Prone to Error 
> 
>  
>
> The Pentagon is Trying to Secure Its Networks Against Quantum Codebreakers 
> 
>
> John K Clark
>

This may be the case. Quantum computing is interesting, and with the IBM QE 
I wrote a couple of simple codes to prepare entangled states and to flip 
them in a Hadamard gate. The QE runs at 50 qubits, which is a narrow path 
so to speak. It is also an ungainly thing that sits in a cryro-tank. Maybe 
diamond with nitrogen atoms at specific locations will lead to practical 
q-computers. The big issue needed to be cracked is quantum error 
correction, where progress on this in time may lead to more practical 
quantum computers or processors that might in the future enter into 
computers. It is possible in a few decades that quantum computers might 
begin to appear all around us. It will probably take a fair amount of time.

Sabine's assessment of quantum metrology over quantum computing is probably 
correct in the next decade or two.

LC 

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Re: Quantum computing is like QAnon?

[John Clark]

On Mon, Jul 6, 2020 at 6:19 AM Philip Thrift  wrote:

Sabine Hossenfelder @skdh
>

 > *Take it from me when I say no nation on this planet is doing strategic
> planning on quantum computers.*


NSA, Army Seek Quantum Computers Less Prone to Error



The Pentagon is Trying to Secure Its Networks Against Quantum Codebreakers


John K Clark

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