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Blaine Bateman

Will Quantum Computing Enhance Analog Design? Part 3

Blaine Bateman
DaeJ
DaeJ
11/19/2013 9:22:58 PM
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Bright future for Quantum Computing
I wonder when Quantum computer is popular in the market so that every engineering student buys it in order to calculate the complex formulation less than a few second. I guess that it is not easy to store information into memory by Quantum Computer since it is very sensitive in the temperature and it is kindly unstable.

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eafpres1
eafpres1
11/19/2013 11:18:03 PM
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Re: Bright future for Quantum Computing
@DaeJ--thanks for reading and offering an imaginative view of the future.  It is easy to laugh at such scenarios, but over the span of my career (30+ years) we have gone from computers being mainframes to having super-computer like power in a phone.  I certainly didn't have the vision 30 years ago to come close to what is common today.

In many ways I feel we live in wondrous times.  While a lot of computing advances are used early in things like fluid dynamics, weather modeling, simulating the big bang and other such pursuits, it is also true that electronics design has made good use of computing and is often an early adopter.  I think that if a company could produce a dedicated quantum processor and design analog simulation software for it, they would really have something. I hope I get to see that!

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samicksha
samicksha
11/20/2013 5:33:43 AM
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Re: Bright future for Quantum Computing
This shall allow a quantum computer to decrypt many of the cryptographic systems that we are using today, i.e. it would be a in the number algorithm for solving the problem, parallel to same i am curious to see universal gate set for same.

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eafpres1
eafpres1
11/20/2013 10:20:40 AM
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Re: Bright future for Quantum Computing
@samicksha--The Bristol University work lets you consider some types of standard structures for quantum computing.  However, there are still many different roads being pursued so what the final quantum computing device may be is still very open, if it even is possile to scale up.  So the gate set is still an open question.

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etnapowers
etnapowers
11/20/2013 8:55:55 AM
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optomechanical crystal
@Blaine: really nice BLOG! The optomechanical crystal is a really interesting device that could determine the definitive diffusion of the Silicon Photonics technology. I suppose that the characterization and the reliability of this crystal is really a key point for the success of this technology, which holds terrific promises of revolution in the electronics field.

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eafpres1
eafpres1
11/20/2013 10:17:33 AM
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Re: optomechanical crystal
@etnapowers--I agree there is a lot of work to do in order to prove some of these features are stable enough to make in a semiconductor fab and not just in the lab, and as you note reiiabilty will also be a key factor.  But just the idea of combining micro mechanical, electrical, adn photonic functions in one device leads to incredible possibilities.  I've written before  about how MEMS is making its way into analog front ends for tunable matching etc.  I feel we are still only at the very beginning of another round of revolution in electronic integration.

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etnapowers
etnapowers
11/26/2013 9:12:17 AM
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Re: optomechanical crystal
@Blaine: I fully agree on incredible possibilities for this technology, moreover I think that only if the combination of "micro mechanical, electrical, adn photonic functions" , as you correctly said , will be stable and reliable this technology will be widely diffused.

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eafpres1
eafpres1
11/26/2013 11:07:35 AM
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Re: optomechanical crystal
@etnapowers--that is a very important point.  Even today's semiconductors can suffer from slow diffusion of atoms which can cause errros in a chip's function.  As each circuit element becomes smaller, we reach a point where movement of only a few atoms coudl disrupt a transistor.  This is made worse by higher density leading to higher core temperatures within a 3-D chip.

For MEMS, I think we are early in the life of various MEMS applications and don't know how long these devices will really last, and what the failure modes might be.  I'm sure people are looking at it.  

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etnapowers
etnapowers
11/26/2013 12:17:02 PM
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Re: optomechanical crystal
@Eafpres,

that's absolutely true. I guess that new standards of reliability will be developed for these atomic systems and i think that in such a future scenario the engineers with a good knowledge of quantum physics will be very valued.

The MEMS are devices based on the piezoelectric effect that is a electromechanical property, I wonder if there is a similar effect on atomic scale , for example on a layer of atoms.

 

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amrutah
amrutah
11/27/2013 12:37:57 AM
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Re: optomechanical crystal
@eafpres:

   I agree, with very little MEMS devices hitting the market we don't have a clear assessment of their reliability.  These being mechanical structures are prone vibration and have higher failure rates.

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etnapowers
etnapowers
11/27/2013 3:58:45 AM
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Re: optomechanical crystal
MEMS systems are utilized in many applications and many industry sectors: consumer (gyroscopes for smartphone, tablets...),  vibrational sensors (safety, ), automotive (motor control) etc...

Due to this wide diffusion the reliability of these devices will be tested very soon and I believe that the result will be good.

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yalanand
yalanand
11/30/2013 11:19:20 AM
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Re: optomechanical crystal
with very little MEMS devices hitting the market we don't have a clear assessment of their reliability.

@amrutah, I totally agree with you. We still have limited knowledge on how MEMS devices fail because limited tools and models are available. How to model the reliability of MEMS is a challenge.

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amrutah
amrutah
12/1/2013 1:22:48 PM
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Re: optomechanical crystal
@yalanand: Yes, improving the yield and reliability of the MEMS device is complex because of the existing knowledge of the MEMS device models.  

    Having said that, the 2007 ITRS (International Technical Roadmap for Semiconductors) release has already laid the roadmap for NEMS devices which might eventually replace MEMS devices.  The future for semiconductor is fast changing and help integrate more and more analog within a small area.

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amrutah
amrutah
11/21/2013 12:11:18 AM
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Re: optomechanical crystal
@etnapowers:

    With so much of development happening in the field of semiconductors we are at a inflection point where a lot will change by 2020-2030.  With new technology like carbon nanotubes, new semiconductor material (compounds of materials) we will see new devices.  With new semiconductor technology we can hope to see these quantum computers to be small and easily available for everybody.

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etnapowers
etnapowers
11/26/2013 9:20:33 AM
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Re: optomechanical crystal
@amrutah: the scenario that you described is really exciting to me! As soon as new technologies will be producing new quantum computers there will be an intellectual revolution concerning the way to design , test , integrate and produce the electronic components useful to this scope.

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yalanand
yalanand
11/30/2013 11:23:24 AM
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Re: optomechanical crystal
 With new technology like carbon nanotubes, new semiconductor material (compounds of materials) we will see new devices. 

@amrutah, I think nanotubes will completely change the way we implement systems because carbon nanotubes have totally different characteristics. I think VLSI engineers should start studying about nanotubes because this is going to be the next big technology.

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amrutah
amrutah
12/1/2013 1:12:57 PM
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Re: optomechanical crystal
@Yalanand: "carbon nanotubes have totally different characteristics..."

   Yes the characteristics of carbon nanotubes is different, it is proving to be a great material to redefine battery technology.  The portable devices will have a long lasting power, which might further reduce the size of cellphones (may get rid of charger module), surveillance drones.  Also it is good material for storage or memory devices.

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yalanand
yalanand
11/30/2013 11:14:16 AM
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Re : Will Quantum Computing Enhance Analog Design? Part 3
@Blaine, thanks for the post. I am curious to know if optical transistors will completely replace traditional transistor and how long quantum computing will take to come market ?

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eafpres1
eafpres1
12/2/2013 8:59:15 AM
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Re: Re : Will Quantum Computing Enhance Analog Design? Part 3
@yalanand--My guess is we are about 10 years away from large scale photonic transistor integration, maybe even longer.

However, in the field of so-called Silicon Photonics there are commercialized devices with varying levels of integration of optical functions on chips.  A near-term goal is to replaced the so-called "light engine" in datacom and telecom equipment which uses fiber optics to send high data rates.  Today, most such equipment uses lasers, one interface which converts electrical to optical is expensive, and uses lots of power.  An example is a Si Photonic company called Luxtera provides a light engine to Molex for an "active optical cable".

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DaeJ
DaeJ
12/2/2013 1:15:28 PM
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Re: Re : Will Quantum Computing Enhance Analog Design? Part 3
I think that silicon photonics could be used in the high data rate transmitter and receiver of Satellite. I believe that the cost is a little bit expensive now. Once cost is the acceptable point, this technology would be popular in other application. Then I expect that there is no more jitter and cross talking with noise in the PCB Board.

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eafpres1
eafpres1
12/2/2013 8:18:16 PM
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Re: Re : Will Quantum Computing Enhance Analog Design? Part 3
@DaeJ--good point; possibly a high level of photonic operation might be more radiation resistant which is an issue for space operations.

However, I do not think jitter will be eliminated by Si Photonics.  I think that fundamental limits will mean there is always some level of jitter.

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