Quantum Bayesian Networks

September 27, 2015

Donald Trump to Invest $200M in Quantum Computing

Filed under: Uncategorized — rrtucci @ 9:26 pm

Political activity associated with the USA 2016 presidential election has been pretty bizarre lately. Currently, the top candidate for the Republican Party, leading by about 10 percentage points, is Donald Trump, a guy who wears a fluffy, dead rat on his head, a 69 year old senior citizen who doesn’t think very highly of women or Mexicans except when they are cleaning his home and tending his lawn, a real estate, hotel, casino and golf course mogul plus an awful TV host supposedly worth $4B.

According to Wikipedia, NBC and Trump jointly owned the Miss Universe beauty pageant from 2002 to 2015. The Donald, in his speech announcing his candidacy for the 2016 presidential election, said most Mexican immigrants are criminals and rapists. Disturbed by those statements, NBC pulled out of the partnership, and The Donald was forced to sell the company shortly thereafter, in Sept 2015.

But now The Donald has announced that he is starting a new beauty pageant called Quantum Miss Multiple Universes, which is going to obliterate the old, classical Miss Universe pageant. It’s going to be exponentially better. His initial investment in QMMU is $200M, just a fraction of what he has spent already in the 2016 presidential election. Mr. Trump said at a press conference:

“The talent competition for the Miss Universe 2002 pageant was won by Scott Aaronson with a talk on Quantum Complexity Theory. Ever since that talk, I’ve been a firm believer that quantum computers are possible. This beauty pageant will hasten the construction of quantum computers. Another great source of inspiration for this beauty pageant is #quantumwoman on Twitter”

Below is a photo of Miss Universe 2002, Scott Aaronson. (Beauty standards have changed since then.)


As a Miss Universe winner, Scott has had a grueling career traveling to all the countries shown below as an ambassador of good will.

Click to enlarge. This is a snapshot of www.scottaaronson/where.html

Click to enlarge. This is a snapshot of http://www.scottaaronson.com/where.html

Of course, instead of vacationing in those countries, Scott could have used any of the numerous resources available nowadays to give a talk (Skype, Google Hangouts, YouTube video, fax, email with attached pdf, blogs, website, arXiv, HAL, an old fashioned but quite effective telephone teleconference, ResearchGate…) But nothing beats the homeliness of delivering in person the same talk that he always gives, delivered to a huge, enthusiastic audience of fawning admirers that understand about 1% of what he is saying.

September 22, 2015

China Mulling Over List of Presents to Itself For Next Christmas

Filed under: Uncategorized — rrtucci @ 9:49 pm

Check out

Visions of Future Physics, by Natalie Wolchover
(Quanta Mag., Sept, 2015)

The article is about renowned Princeton Univ. Prof. Nima Arkani-Hamed. In particular, the article describes his fascinating personal history and his quest to convince the world, starting with China, to build a 100-TeV successor to CERN’s 10-TeV Large Hadron Collider. (successor just 10 times higher in energy than the LHC)

It’s a well written and interesting article with some slight relevance, from my biased point of view, to quantum computing. As I recently reported in this blog, Alibaba and the Chinese government recently announced that they intend to build a QC lab in Shanghai

Excerpts from article

Now it is decision time. The Chinese government will release its five-year budgetary plan by the end of the year, revealing whether it plans to invest in research and development for the collider project.

To Arkani-Hamed, the Chinese collider campaign feels like pushing an open door. “When you think about it more, it’s just perfect,” he said, sipping Coke Zero on his office couch. “It would be great for physics; it would be great for China. They’re looking for something where they can just be the best in the world.” He continued, “There are very few things in life where what you want to do for idealistic reasons and what someone else wants to do for Machiavellian reasons are identical. And when that happens, you should just do it. You should just do it!”

It occurred to me that the same argument used above by Nina to sell the 100-TeV collider could be used to sell quantum computers and even aircraft carriers to China. (The following table is very approximate and speculative. This being a QC blog, you know where my loyalty lies)

Quest Final Cost time to build it scientific benefits industrial benefits military benefits
100 TeV collider $10B 25 yrs. Yes Small (Magnets)
Kitaev Quantum Computer $200M 10 yrs. Yes Yes Yes
aircraft carrier $5-10B 5 yrs. Small Yes

More on China’s 13th five year plan (2016-2020). First draft expected Oct 2015, final draft expected March 2016. It’s time to lobby your Chinese “congressman”

September 17, 2015

Universal Studios in Final Negotiations to Buy Caltech

Filed under: Uncategorized — rrtucci @ 10:31 pm

Caltech university is about a 30 minute drive from Universal Studios in Los Angeles. And ever since Richard Feynman and Murray Gell-mann left it, Caltech has decided to double its activities in the entertainment industry. So it came as no surprise to us when we heard that Universal Studios was in the final stages of negotiations with John Preskill to buy Caltech from him. We here at TMZ immediately moved into action and sent one of our ersatz reporters to query a top executive at Universal about the matter. Here is what the executive had to say:

We had to move quickly before Disney grabbed them. This science bunkum stuff is a very hot commodity right now. When we heard that Disney was considering revamping their unbearably sweet pavilion “It’s a small world” and replacing it by a pavilion called “It’s a Many Worlds”, featuring a sing-along led by Sean Carroll, we moved quickly to preempt them. That Sean Carroll sing-along, we just had to have it for Universal Studios!

Caltech is already quite a powerhouse in the entertainment field:

They have their own fashion designer Spiros Michalakis that produces the manly Spiros Hoodie.

In the addictive games for young vulnerable children department, they produce their own modification of MineCraft called QCraft.

In the advertising department, they are awesome too. Their Twitter accounts @preskill and @QIM_Caltech are manned 24/7 by John Preskill, and, rarely, by someone else. Also they hired their own in-house cartoonist (phdcomics.com) to produce some primo YouTube videos that publicize John’s institute. I don’t think any quantum institute pays more for publicity except maybe IQC in Waterloo.

In the book publishing industry, they have the lucrative Feynman memorabilia franchise, and they are grooming the budding Kitaev franchise as we speak.

In the intentional science fiction field, they are pulling in top dollar doing consulting for the sci fi movie industry. All the science bunkum in the movies Interstellar and Ant-Man is due to them. And of course, they also excel in the unintentional science fiction field.

It’s true that they failed badly, $500M down the drain, with the LIGO experiment, but Universal Studios is exhilarated that they failed. Universal is planning to convert LIGO into the most awesome roller-coaster ride ever. Imagine it. We are going to insert into that linear pipe a magnetically levitated, 2 passenger capsule sled. The inside of the pipe will be in near vacuum so that sled is going to reach a speed of a few Machs. We plan to brake the ride with some humongous bungee cords.

The Caltech amusement park is going to be serviced entirely by postdocs. It’s true, the current crop of Caltech postdocs is subpar in terms of the required intelligence and good looks (look at their embarrassing blog posts!), but we plan to replace them gradually by some beautiful and brainier Valley girls in roller skates and mini-skirts. We might also hire some of the hotter looking babes in #quantumwoman Thank God those guys are so thoughtful to show pictures of them. That is so important when hiring women scientists.

LIGO amusement ride, coming soon to Universal Studios. Eat your heart out, Disney and Las Vegas.

September 13, 2015

Quantum Bayesian Networks for Quantum Field Theories And Beyond

Filed under: Uncategorized — rrtucci @ 8:33 pm

I often describe QB nets (Quantum Bayesian Networks) as being a graphical method for representing any quantum density matrix (see, for example, http://arxiv.org/abs/1204.1550 for more info on why I say that). Because of this description of mine, some might be led to believe that QB nets do not shed much additional light onto theories that stick to pure states for the most part.

In most of my papers, I use QB nets with nodes that have a finite number of states. Once again, this might lead some to believe that QB nets do not apply to continuum theories, yet most theories in High Energy Physics are continuum theories

I wanted to write a brief blog post to emphasize that QB nets can also be useful for both pure state and continuum theories.

In fact, the same dichotomy already exists for CB nets (Classical Bayesian nets). Judea Pearl is a very famous researcher that likes his CB nets with nodes that have a finite number of states, and Andrew Gelman is a very famous reseacher that likes his CB nets with nodes that have a continuum of states, and partly for that reason, instead of calling them Bayesian networks, Andrew calls them hierarchical models, but they are basically the same thing. Of course, you can go further in the continuum direction and use not just some nodes with an infinite number of states, but also use graphs with an infinite number of nodes (and perhaps periodic boundary conditions).

In my 1995 paper entitled “Quantum Bayesian Nets”, I give a QB net which yields a Feynman path integral (FPI) that in turn yields the Schroedinger equation for a single mass particle in an arbitrary potential. My proof is a simple adaptation of a proof that I learned from the Feynman & Hibbs book “Quantum Mechanics and Path Integrals”.

It should be fairly straightforward to generalize my derivation to find a QB net for any quantum field theory that is defined in terms of a CONTINUOUS or discrete or hybrid sum over exp(i*action) (and such FPIs are really sums over PURE quantum states)

September 8, 2015

The Dutch Stallion and the Canadian Donkey

Filed under: Uncategorized — rrtucci @ 5:53 pm

The recent news (see my previous blog post) about the Dutch quantum institute QuTech partnering with Intel has reminded me of the differences between a Dutch stallion and a Canadian donkey.

Below is a picture of a Friesian stallion. According to Wikipedia “The Friesian (also Frisian) is a horse breed originating in Friesland, in the Netherlands” It’s a reasonable analogue of QuTech

Friesian Stallion (image from Wikipedia, here

Friesian Stallion (image from Wikipedia, here)

Next, let me show you a picture of the Donkey from the Shrek movies, which some say originated in Canada. It reminds me of Lazaridis’ IQC (Institute for Quantum Computing), which has spent more than $150M since it was founded in 2002, studying NMR quantum computers and quantum cryptography, both known to be dead end streets since day one.


September 6, 2015

Intel, Welcome Back, All is Forgiven

Filed under: Uncategorized — rrtucci @ 8:06 am

For many years, I have been shouting into the wind, trying to use this blog to cajole Intel corporation to join the quantum space race. Quantum computing is the natural next stage in their computer chip journey so working on it is the logical thing for them to do.

See the following two earlier blog posts of mine, where I called Intel the reluctant natural of quantum computing and I rebuked them for goofing off in the QC classroom:

But at last, my prayers have been answered. Intel announced a few days ago that it will be investing $50M over ten years in a Dutch company called QuTech. QuTech is trying to build an anyonic quantum computer of a type that I like to call the Kitaev quantum computer, because it was invented by Alexei Kitaev.

Welcome back, Intel, our prodigal son. The bells of all the QC churches of the world are ringing to welcome you:


Here are two paintings commissioned to commemorate this grand occasion:

The Prodigal Son (oil on canvas), Guercino (Giovanni Francesco Barbieri) (1591-1666) / Galleria Borghese, Rome, Italy

The Prodigal Son (oil on canvas), Guercino (Giovanni Francesco Barbieri) (1591-1666) / Galleria Borghese, Rome, Italy

Bartolomé Esteban Murillo, Return of the Prodigal Son 1667-70, courtesy National Gallery of Art, Washington

Bartolomé Esteban Murillo, Return of the Prodigal Son 1667-70, courtesy National Gallery of Art, Washington

One cannot over-estimate the importance of this news to quantum computing. It’s true that $50M is pocket change for Intel, a corporation that had a revenue of $56B in 2014 and that has 100K employees. A company that is used to spending on the order of $5B on a single microchip fab. But the $50M figure doesn’t matter much. What is more important is that they have finally taken the plunge into quantum space, and that they have committed their considerable manpower and engineering expertise to help finish building the Kitaev QC. And that expertise of theirs is ideally suited for the task at hand. And Intel is not a procrastinator or faker like most academics. When Intel promises, it delivers.

Intel, be forewarned: once in, in forever. There is no known cure for quantum mechanics addiction.

Intel is the 800 pound gorilla of the microchip world. Since they built the world’s first commercial microprocessor chip in 1971, they have been one of the biggest developers and manufacturers of chips for personal computers. So here is a photo of Tarzan welcoming Intel back

(came from here), “A Mother’s Strength: Kala and Tarzan”
by Penultimate-21

and a photo of Jane Goodall welcoming Intel back:


The Intel $50M news follows on the heels of another big investment in QuTech. Indeed, 3 months ago the news media reported that QuTech has been promised $150M over ten years by the Dutch government. And Microsoft has already been investing in QuTech since 2010 or earlier. So this QuTech is a strange socialist monster, a private multinational corporation that is subsidized by the Dutch state and has very close ties to TU (Technical Univ.) Delft, another Dutch private/public hybrid. (Okay, I was joking with the above QuTech link. Here is a link to the true Dutch QuTech)

September 3, 2015

New Quantum Software Company called QC Ware

Filed under: Uncategorized — rrtucci @ 6:02 pm

Oh boy, the QC software space cadets keep coming and coming 🙂

I’ve added to my list of super cool quantum computing software companies a new startup/debutante called QC Ware.

Some additional discussion of QC Ware follows. This is probably only of interest to QC fanatics like me. (more…)

September 1, 2015

Is Suing Cambridge Quantum Computing & Grupo Arcano For Patent Infringement Feasible?

Filed under: Uncategorized — rrtucci @ 8:30 am

My company artiste-qb.net owns 11 USA quantum computing software patents (5 granted, 6 pending). If Cambridge Quantum Computing is infringing on our patents, we would definitely sue them and their main investor Grupo Arcano, which has an office in Miami.

Suing for patent infringement can cost millions of dollars per case. Such high costs put it far out of the reach of a small business like us. But there is a way around this obstacle: hiring patent lawyers on a contingency basis. Nowadays, there is a whole “patent troll” industry of law firms that specialize in suing rich companies for patent infringement, and such firms often offer to work for you on a contingency basis, meaning that you don’t pay them anything. They subtract their fees from the final money settlement.

Quite frankly, if we were to sue Cambridge QC, we would not care if the lawyers got 99% of the settlement money. Our goal would not be to make any sort of profit from the lawsuit but to inflict maximum damage on Cambridge QC.

The following article is a good introduction to this method of patent litigation:

Patent Contingent Fee Litigation, by David Schwartz on March 25, 2012


In the last decade, a substantial market has begun to develop for contingent fee representation in patent litigation. Wiley Rein — a traditional general practice law firm with hundreds of attorneys practicing all areas of law — represented a small company, NTP, Inc., in its patent infringement lawsuit against Research in Motion, the manufacturer of the Blackberry line of devices. The lawsuit famously settled in 2006 for $612.5 million, and the press reported Wiley Rein received over $200 million because it handled the lawsuit on a contingent fee basis. And Wiley Rein is not alone in doing so. Many patent litigators around the country have migrated toward handling patent cases on a contingent fee basis.

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