Talk:Timeline of quantum computing and communication

message: This page offers a good insight into the development of quantum computing. However, there's quite a bit missing, especially in terms of recent developments - too much has happened in the last 10 years or so, in order to be able to provide a good overview by merely dividing by year. Too many events, often not related to each other, get put into a single long paragraph. From point onward (1995 for example), I suggest sorting milestones by month of the year.
Another suggestion, as quantum computing is such a multi-disciplinary field, would be to divide developments into their respective disciplines. For example, developments in theory (e.g. error correction), could be separated from experimental ones (e.g. multiple qubit entanglement). I'm not suggesting a separate timeline (that would detract from the idea that quantum computing unifies many fields), just maybe a more intuitive subdivision than the monthly one I suggested above.
In any case, this page has a lot of potential, but as it stands, I don't think it has the scalability, and more importantly the readability it deserves. In case there are no objections, I'll try to reorganize it. Tomatoman 20:10, 6 January 2006 (UTC)
replies: text: Just realized the obvious solution that was escaping me - for every year just have all the developments bullet-pointed in chronological order. Will get this done as soon as I've got a moment. Tomatoman 21:03, 7 January 2006 (UTC)

text: There are too many entries in 2005 and 2006.  Many of these are just theoretical proposals and their merit is still unclear. I think this page should only include acknowledged milestones. --J S Lundeen 18:50, 8 March 2006 (UTC)

text: Does anyone have any opinions on the proposed split? Any recommendations for names of the two articles? --Robin (talk) 03:02, 21 August 2009 (UTC)

text: I agree with many of your points. Some minor quibbles: If an experiment is cited in the media, it would be nice to have the original paper(s) and media citations. CNOT is a quantum gate. I would think it's a milestone when they implemented that for the first time, but I'm no experimentalist. Also, as I said before, I think we should split this article into one that covers implementation or implementation-related results, and another one which covers theoretical results (like Holevo's theorem, teleportation and superdense coding, Shor's algorithm, etc.). --Robin (talk) 11:44, 14 May 2010 (UTC)
replies: text: Thanks, Robin.  I agree with your point about citing both original paper(s) and media citations; I just didn't describe what I meant very well.  I was referring to things like "Google Demonstrates Quantum Algorithm Promising Superfast Search" citing a decidedly flaky re-report on PopSci.com instead of the original article on the Google Research Blog, which is clearer and more correct while still being directed at a general audience.  I also agree that CNOT is a quantum gate, but only in the sense that classical gates are quantum gates that don't require quantum effects.  One output of CNOT is the XOR of the two inputs, and the other output is just one of the two inputs, both of which can be implemented easily with transistors and wires.  As such, if only CNOTs in one basis are used, it's not relevant.  If CNOT and Hadamard gates are used, it's possibly relevant.  I agree with the split too, though it may be easier as a first step to split the page into two sections instead of jumping right to two separate articles. Ndickson (talk) 16:22, 14 May 2010 (UTC)

text:  Oh yeah, even the title "Google Demonstrates Quantum Algorithm Promising Superfast Search" is false according to the original article, since they're not promising anything, they don't claim to know whether it's a quantum algorithm that was demonstrated, and they don't claim that search will be "Superfast", haha. Ndickson (talk) 16:30, 14 May 2010 (UTC)
replies: text: Fair enough, feel free to split the article into two parts and/or prune the article severely. --Robin (talk) 19:15, 14 May 2010 (UTC)
thread_title: Untitled

message: (I'm adding an RfC here, since this article is absolutely abysmal and has been for years.  It needs a near-complete rewrite, since it's just a gigantic list of external articles about quantum computing, not a description of milestones in quantum computing as the title indicates.  I've been unable to find outside parties to look at the article or my proposed criteria for a rewrite below, and my attempt to start cleaning up the page a while back was reverted without explanation.  The article keeps growing worse as time goes on, and this can't continue.  Please help.  Ndickson (talk) 08:23, 7 January 2011 (UTC)
replies: text: I agree with many of your points. Some minor quibbles: If an experiment is cited in the media, it would be nice to have the original paper(s) and media citations. CNOT is a quantum gate. I would think it's a milestone when they implemented that for the first time, but I'm no experimentalist. Also, as I said before, I think we should split this article into one that covers implementation or implementation-related results, and another one which covers theoretical results (like Holevo's theorem, teleportation and superdense coding, Shor's algorithm, etc.). --Robin (talk) 11:44, 14 May 2010 (UTC)
replies: text: Thanks, Robin.  I agree with your point about citing both original paper(s) and media citations; I just didn't describe what I meant very well.  I was referring to things like "Google Demonstrates Quantum Algorithm Promising Superfast Search" citing a decidedly flaky re-report on PopSci.com instead of the original article on the Google Research Blog, which is clearer and more correct while still being directed at a general audience.  I also agree that CNOT is a quantum gate, but only in the sense that classical gates are quantum gates that don't require quantum effects.  One output of CNOT is the XOR of the two inputs, and the other output is just one of the two inputs, both of which can be implemented easily with transistors and wires.  As such, if only CNOTs in one basis are used, it's not relevant.  If CNOT and Hadamard gates are used, it's possibly relevant.  I agree with the split too, though it may be easier as a first step to split the page into two sections instead of jumping right to two separate articles. Ndickson (talk) 16:22, 14 May 2010 (UTC)

text:  Oh yeah, even the title "Google Demonstrates Quantum Algorithm Promising Superfast Search" is false according to the original article, since they're not promising anything, they don't claim to know whether it's a quantum algorithm that was demonstrated, and they don't claim that search will be "Superfast", haha. Ndickson (talk) 16:30, 14 May 2010 (UTC)
replies: text: Fair enough, feel free to split the article into two parts and/or prune the article severely. --Robin (talk) 19:15, 14 May 2010 (UTC)
thread_title:  Cleanup 

message: "However, instead of viewing this intractability as an obstacle, Feynman regarded it as an opportunity. He pointed out that if it requires that much computation to work out what will happen in a multi-particle interference experiment, then the very act of setting up such an experiment and measuring the outcome is equivalent to performing a complex computation."
Does the information contained in the above quotation not appear in the International Journal of Theoretical Physics article describing his talk?  I just read the paper, have it in front of me, and was looking for any mention of Feynman viewing this as an opportunity.  What I found is section 4: QUANTUM COMPUTERS -- UNIVERSAL QUANTUM SIMULATORS.  There he does not talk about how setting up this experiment is equivalent to performing a complex computation; he restricts his view of a quantum computer to a machine capable of simulating physical laws.  Am I wrong?  Does the idea of measurement being equivalent to complex computation show up somewhere in this paper, or does it do so elsewhere?  Ruberik 21:01, 16 June 2006 (UTC)
thread_title:  Feynman 1981 

message: Shouldn’t this be in reverse-chronological order?! Can I go ahead and change it?
--V4vijayakumar 06:58, 25 October 2006 (UTC)
replies: text: Strong agree. Today was my first visit to this page and I immediately perceived this to be in the wrong chronological order. Most recent events should be on top. They will generally be of more interest to visitors, and certainly to return visitors looking for the latest news. If there are no dissenting views, I would suggest this change be implemented. Gavin (talk) 11:08, 21 July 2023 (UTC)
replies: text: I do not agree: the later in the timeline, the more irrelevant and arbitrary become the entries. But I agree that it would be helpful to simplify navigation to more recent years (the table of contents is too long for that), so that one can immediately jump to any year of interest; I've tried out the horizontal version of TOC, which looks like an improvement to me. --Qcomp (talk) 16:49, 21 July 2023 (UTC)
thread_title:  Reverse-chronological order 

message: "2002 - 11th UK conference on the Foundations of Physics, the Philosophy Centre, University of Oxford, September 9 - 13 sees the exposition of the theory of the Quantum Time Bomb."
The theory of what? I don't know anything about quantum computing, normal bits are quite enough for me thanks, but this theory sounds like it's part of Quantum bogodynamics, and I think it just broke my bogon meter. Many of the very few hits I get on Google are about something called "Harry Potter and the Quantum Time Bomb". Is this really something serious and notable or just a joke? -- Coffee2theorems 15:40, 15 June 2007 (UTC)
replies: text: I'm familiar with quantum computing and I haven't heard of "Quantum Time Bomb". It's certainly not notable nearly the same degree as the other things listed for 2000-2004 and it may even be a joke. I'm removing it. If anyone puts it back, they should provide an explanation. Andris 21:07, 15 June 2007 (UTC)
thread_title:  Quantum time bomb 

message: Link to Roman Ingarden in this article is improper - the physycist involved was a son of Roman Ingarden, namely Roman Stanisław Ingarden. There isn't an article about him on English wiki however. See: pl:Roman Stanisław Ingarden.  —Preceding unsigned comment added by 83.8.124.165 (talk) 12:49, 17 September 2007 (UTC)
thread_title:  Roman Ingarden 

message: What about QIC = PSPACE?  This has been proven.  It seems to imply that interactive quantum computers are no faster than conventional computers.
Isn't that important enough to be included?  ( See http://arxiv.org/pdf/0907.4737v2.pdf )
50.0.36.23 (talk) 07:25, 30 April 2014 (UTC)
thread_title:  Interactive Quantum Computer takes polynomial time to solve problems 

message: Without clear categorization of advances tracked through time, how can one get any meaning out of the article?
For example, tracking the maximum number of quantum bits in a single entanglement according to date would be much more meaningful than the current listing of ad hoc, haphazard, and arbitrary "achievements". 
Also comparing the number of quantum bits needed for various types of tasks such as breaking encryption would be very informative in comparison to current accomplishments, because it would expose how little progress we have really made.
A great example of this would be to show how many quantum bits the D-Wave machines achieve in individual entanglements.  This would expose the misguided impressions generated when D-Wave talks about the number of quantum bits on a single board as that has almost nothing to do with the number of quantum bits achieved in a individual entanglements. 50.0.36.35 (talk) 20:19, 28 February 2015 (UTC)
thread_title:  Not Good for Straight Forward Understanding of Advances 

message: Both types of error simultaneously detected
http://www-03.ibm.com/press/us/en/pressrelease/46725.wss
Could someone post this?  
New chip architecture may increase qubits in a future quantum computer
http://www.kurzweilai.net/new-chip-architecture-may-increase-qubits-in-a-future-quantum-computer
— Preceding unsigned comment added by 107.9.178.102 (talk) 18:40, 30 April 2015 (UTC)
thread_title:  Another advance 

message: I understand that is hard to give a comprehensive overview of such an active field for a general audience, but the "2000s" section of the article in its current form is seriously misleading. Many of the bullet points are shortened to the point where the text isn't in any relation to the importance of the referenced publication anymore. For example, the 2009 section states "Optical frequency comb devised" – an experimental technique for which (among other things) Hänsch and Hall shared the Nobel prize for Physics back in 2004! Another example from that year is the bullet point "Quantum entanglement demonstrated over 240 micrometrers". This misses the point entirely. Entanglement between qubits separated much further than that had been demonstrated before that, for example in Moehring et al., "Entanglement of single-atom quantum bits at a distance", doi:10.1038/nature06118 (2007). What made this a top-tier publication is the fact that they entangled the states of mechanical oscillators (ions moving in a "static" potential), which had not previously been done. Yet another example is the statement "Decoherence suppressed" in the 2011 list, while a paper showing decoherence-free subspaces has been published in Science 291, 2001 – that's ten years earlier, and I would guess there are even earlier publications out there that would fit the summary.
I could go on and on, but I suppose I've made my point. This article needs a thorough revision by somebody in the quantum computing/quantum optics field. In it's current form, it's quite useless as a quick summary and thoroughly misleading. This might also be a good opportunity to replace cited news articles with the actual primary sources where appropriate. Since readers who don't have a background in quantum optics or a related field might not know what the correct interpretation of many statements is, I've added the "Misleading" template to the page.
Of course, there is also the question of how to give a fair overview of developments a field with many "competing" developments. That's a question to tackle on another day, though. Let's make the page usable as it is first. In that regard, it might be better to refrain from adding new articles unless one feels comfortable summarizing them in a way that puts them into context. --Clickingban (talk) 19:41, 7 February 2016 (UTC)
thread_title: Misleading short descriptions

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thread_title:  External links modified 

message: Hello,
The structure of each item is inconsistent: some mention the teams or companies, while most do not. I have no particular opinion on that point, but believe that each should be treated the same. What do you think? #!/bin/DokReggar -talk 13:38, 4 January 2017 (UTC)
thread_title:  Bullet structure 

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thread_title:  External links modified 

message: Hello! I'd like to propose a few improvements to this Wikipedia article. But first, a disclosure, which is also displayed in the connected contributor template above: I am submitting this request on behalf of Intel via Interfuse Communications, and as part of my work at Beutler Ink. Given my conflict of interest, I'm seeking volunteer editors to review and implement the proposed content appropriately, and I will not edit the article directly. The five suggestions are outlined below.
=== 17-qubit superconducting test chip ===
Currently, the "2017" section includes "". However, the inline citation directs readers to an Intel press release, which I understand is not acceptable for Wikipedia. I propose replacing this bullet point with the following, which offers slightly more detail and provides appropriate sourcing:
:
If acceptable, editors are welcome to use the following markup for updating the article:
* Intel confirmed development of a 17-qubit superconducting test chip in October 2017.
=== 49-qubit superconducting test chip ===
Currently, the "2018" section includes "". Same as above, the inline citation used to verify the claim directs readers to an Intel press release. I propose replacing the bullet point with the following, which offers more a bit more detail as well as appropriate secondary coverage:
: 
If acceptable, feel free to use the following markup:
* Intel confirmed development of a 49-qubit superconducting test chip, called "Tangle Lake", in January 2018.
=== Proposed additions ===
In addition to the above two content replacements, I propose adding the following three major developments to the timeline:
* 
* 
* 
The first claim would be added to the 2015 section, and the latter two to the 2018 section. Each major development has received sufficient secondary coverage, and these claims are similar to those in the timeline about IBM and other institutions. If acceptable, feel free to copy and paste the following markup:
* 
* 
* 
Thanks for considering these improvements and updates. Again, I'm looking for editors to review and implement the claims appropriately, and I'm happy to address them one at a time, if needed. Inkian Jason (talk) 14:37, 17 August 2018 (UTC)
replies: text: Hello! I see you've edited this article recently, and have an interest in physics. Since no one has replied to this request so far, I wonder if you might be willing to take a look at the proposed changes and offer any feedback. Thanks for your consideration. Inkian Jason (talk) 22:31, 27 August 2018 (UTC)
replies: text:  Hello , thanks for your suggestions. I've updated the references and added most of the suggestions. I picked always what I considered the best reference, since using 3 for every item on this huge list seems excessive, and the main content was almost the same. The Feb 2018 references talked mostly about the QuTech result; so I only added this and nothing about the "spin qubit fabrication flow", with which I'm not familiar. (PS: while I've occasionally edited this list, I find it a bit pointless: except for the early years it's a jumble of small, big, impressive, over-sold results, far from being complete and without well-defined criteria for inclusion. E.g., the triple-photons of Feb 2018 is a very nice result - but a milestone towards a quantum computer?) --Qcomp (talk) 20:28, 28 August 2018 (UTC)
replies: text:   Thanks for your assistance. I will take a look at the updates made to the article. Inkian Jason (talk) 01:46, 31 August 2018 (UTC)
thread_title: Suggested article improvements

message: In addition to the above two content replacements, I propose adding the following three major developments to the timeline:
* 
* 
* 
The first claim would be added to the 2015 section, and the latter two to the 2018 section. Each major development has received sufficient secondary coverage, and these claims are similar to those in the timeline about IBM and other institutions. If acceptable, feel free to copy and paste the following markup:
* 
* 
* 
Thanks for considering these improvements and updates. Again, I'm looking for editors to review and implement the claims appropriately, and I'm happy to address them one at a time, if needed. Inkian Jason (talk) 14:37, 17 August 2018 (UTC)
replies: text: Hello! I see you've edited this article recently, and have an interest in physics. Since no one has replied to this request so far, I wonder if you might be willing to take a look at the proposed changes and offer any feedback. Thanks for your consideration. Inkian Jason (talk) 22:31, 27 August 2018 (UTC)
replies: text:  Hello , thanks for your suggestions. I've updated the references and added most of the suggestions. I picked always what I considered the best reference, since using 3 for every item on this huge list seems excessive, and the main content was almost the same. The Feb 2018 references talked mostly about the QuTech result; so I only added this and nothing about the "spin qubit fabrication flow", with which I'm not familiar. (PS: while I've occasionally edited this list, I find it a bit pointless: except for the early years it's a jumble of small, big, impressive, over-sold results, far from being complete and without well-defined criteria for inclusion. E.g., the triple-photons of Feb 2018 is a very nice result - but a milestone towards a quantum computer?) --Qcomp (talk) 20:28, 28 August 2018 (UTC)
replies: text:   Thanks for your assistance. I will take a look at the updates made to the article. Inkian Jason (talk) 01:46, 31 August 2018 (UTC)
thread_title:  Proposed additions 

message: There is actually no mention of using quantum effects for computation in the 1959 lecture; it only talks explicitly about miniaturizing computers. Later, in an unrelated section (that does not talk about computing) he says: "Atoms on a small scale behave like nothing on a large scale, for they satisfy the laws of quantum mechanics. So, as we go down and fiddle around with the atoms down there, we are working with different laws and can expect to do different things. We can manufacture in different ways. We can use not just circuits but some system involving the quantized energy levels, or the interaction of quantized spins."  Isn't this a bit too vague and unspecific to put it here among contributions like those of Wiesner, Holevo, Ingarden that are very explicit about using QM for information processing? I would find it more appropriate to remove the entry. --Qcomp (talk) 17:53, 29 August 2018 (UTC)
replies: text: I agree and have removed that entry accordingly. XOR'easter (talk) 18:13, 10 September 2018 (UTC)
replies: text: How about the part regarding the energy levels was used by the others as the base of their work? Are we really sure even they do not recognize Feynman work as seminal? Seems to me that revoking this status from a paper requires more than just two opinions on a Wikipedia talk page. #!/bin/DokReggar -talk 06:58, 11 September 2018 (UTC)
replies: text: Being on a Wikipedia timeline full of miscellaneous cruft and over-promoted sales talk is not really a great "status" to be revoked. And "the energy levels are quantized" is just basic quantum mechanics, not discovered by Feynman in the first place and known to everybody in physics well before him. His work in the '80s is relevant to this page; his talk from 1959 isn't. XOR'easter (talk) 15:43, 11 September 2018 (UTC)
thread_title:  Feynman 1959:  does it belong here?  

message: quantum computer in  a cloud. first publicly accessible quantum computer. https://arstechnica.com/science/2016/05/how-ibms-new-five-qubit-universal-quantum-computer-works/ 213.149.61.222 (talk) 21:21, 14 September 2018 (UTC)
thread_title:  ibm quantum experience 

message: I ran across this press release from IonQ Computing dated December 11, 2018 https://ionq.co/news/december-11-2018, which says "On measures of capacity, accuracy and other key benchmarks, IonQ’s system has surpassed all the other quantum computers in the market. It has stored 160 qubits and performed operations on 79 qubits, a record. Its gate fidelity—a measure of the accuracy of logical operations—is greater than 98% for both one-qubit and two-qubit operations on average in a 13-qubit configuration. This means it can handle longer calculations than other commercial quantum computers." This seems to be a noteworthy advance worth including in the 2018 timeline. I have no association with the company.
I'm thinking of the following phrasing: "IonQ Computing announces 160-qubit trapped-ion quantum computer - it can store 160 qubits, but only execute gates on 79 of the qubits."
Any objections, comments, or changes? If someone else would do all the actual edits, especially the Reference linking, that would be great. Thanks.
JackKrupansky (talk) 15:18, 12 March 2019 (UTC)
thread_title:  IonQ Computing - Announces 160/79-qubit machine 

message: I ran across this Medium post which is a pseudo press release from Rigetti Computing dated August 8, 2018 https://medium.com/rigetti/the-rigetti-128-qubit-chip-and-what-it-means-for-quantum-df757d1b71ea which says "Today we’re sharing more details on our plans to build and deploy a 128-qubit system over the next 12 months, and our investment in resources at the application layer to encourage experimentation on our quantum computers." This seems noteworthy and worthy of inclusion in this timeline. AFAICT, this was their first public comment on this effort, although there was a very brief, passing mention in a Bloomberg news article https://www.bloomberg.com/news/articles/2018-08-07/quantum-computers-today-aren-t-very-useful-that-could-change dated August 7, 2018. I have no association with the company.
I propose the following phrasing: "Rigetti Computing announces intention to build a 128-qubit superconducting quantum computer within twelve months."
Any objections, comments, or changes? If someone else would do all the actual edits, especially the Reference linking, that would be great. Thanks.
JackKrupansky (talk) 15:16, 12 March 2019 (UTC)
thread_title:  Rigetti Computing - Announces intentions to introduce a 128-qubit machine within a year 

message: I ran across this tech news story dated February 27, 2019 which covers an announcement by D-Wave Systems of the roadmap for their next generation quantum computer which will have "over 5,000" qubitshttps://venturebeat.com/2019/02/27/d-wave-previews-quantum-computing-platform-with-over-5000-qubits/https://www.apnews.com/Globe%20Newswire/e24f2521eb62a6abd6371e2983c2ce0a.  Granted, the D-Wave systems are specialized quantum annealing systems rather than being truly general-purpose quantum computers with universal gate sets, but this is still a notable advance. I have no association with the company.
I propose the following phrasing: "D-Wave Systems announces roadmap for introduction of a quantum annealing system with over 5,000 qubits. There remains dispute over whether a machine which specializes on quantum annealing should be considered in the same category as general-purpose quantum computers since it lacks a universal gate set, but the lack of firm, standardized terminology allows them to call this a quantum computer for now or at least a quantum computing system or quantum computing platform. At least they are not claiming that it is a general-purpose or universal quantum computer."
Any objections, comments, or changes? If someone else would do all the actual edits, especially the Reference linking, that would be great. Thanks.
JackKrupansky (talk) 16:24, 26 March 2019 (UTC)
thread_title:  D-Wave Systems unveils roadmap for its 5,000-qubit quantum computer (quantum annealing system) 

message: I read a new article about IBM quantum computers https://thequantumdaily.com/2020/08/20/ibm-says-company-achieved-highest-quantum-volume-to-date/. 
It mentions that ″Today, IBM has unveiled a new milestone on its quantum computing road map, achieving the company’s highest Quantum Volume to date, according to a company statement. Combining a series of new software and hardware techniques to improve overall performance, IBM has upgraded one of it’s newest 27-qubit client-deployed systems to achieve a quantum volume 64. The company has made a total of 28 quantum computers available over the last four years.″  — Preceding unsigned comment added by Xpluto (talk • contribs) 16:54, 1 September 2020 (UTC)
thread_title:  IBM Says Company Achieved Highest Quantum Volume to Date 

message: The first entry in 1997 is "David Cory, Amr Fahmy and Timothy Havel, and at the same time..." 
Here Amr Fahmy is linked to a Egyptian football administrator not to a scientist, I guess this link is wrong and an extra article Amr Fahmy (scientist) is needed  — Preceding unsigned comment added by 128.131.68.229 (talk) 12:50, 30 May 2022 (UTC)
replies: text: IP editor, good catch!  I removed the wikilink.  The Amr Fahmy of interest for quantum computing is presumably the same as the one in this profile , who does not appear likely to meet Wikipedia's standards for notability of academics. Russ Woodroofe (talk) 13:17, 30 May 2022 (UTC)
thread_title:  Amr Fahmy 

message: Is it normal that such an apparently important paper (wich seems to be a redacted form of a comference) has so few citations? Mirad1000 (talk) 02:37, 6 May 2023 (UTC)
thread_title:  Yoshihisa Yamamoto and K. Igeta propose the first physical realization of a quantum computer 

message: Beware: Based on these now-reverted edits, it seems the same person from Talk:Google_ATAP#Resume_for_Engineer_Rubayet_Hossain_(Omi) is attempting their same gambit on this article. They use various anonymous IP accounts to attempt to insert self-promotion linking themselves to quantum computing, and they are long-term very persistent, retrying every few months. Their edits cite (unreliable) sources to avoid appearing as blatant vandalism, but the sources never actually mention the named individual. Cybercobra (talk) 21:56, 20 May 2024 (UTC)
thread_title:  "Rubayet Hossain (Omi)" self-promo spam