Can humans really create the quantum computer they expected?

  • #1
george1962
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TL;DR Summary
Can humans really create the quantum computer they expected?
In recent years, there have been a lot of reports and discussions about the manufacture of quantum computers at many academic conferences around the world, in various languages, and on the Internet. From these articles and reports, it seems that the quantum computers should come out soon. However, so far, it can not be seen, except a lot of Ads from big IT companies. Never demonstrates them in public. This phenomenon let many people doubt whether or not the mankind can make the quantum computers. From these reports and paper, they mainly focus on reporting the progress of engineering research and manufacturing of quantum computers (certain hardware and software). Few articles analyze the feasibility of quantum computer research and manufacturing.

The purpose of this question is to try to ask the feasibility of the manufacture of quantum computers, that is, whether humans can finally successfully manufacture quantum computers that can be put into practical use, thereby pushing human social civilization forward. Because if humans invest a lot of money and time, but fail to manufacture quantum computers in the end, then quantum computers will become the second "perpetual motion machine" in human history, which will be another huge loss for mankind.

This question does not offend any persons, I respect them very much. Just asking!
Thank your understanding.
 
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  • #2
We are in the era of NISQ and aiming for building FTQC. ref. https://arxiv.org/abs/2305.09518
We have a lot of problems in technology but not in physics. So I think it is more probable to realize quantum computers than time machines or perpetual motion machines.
 
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  • #3
george1962 said:
Because if humans invest a lot of money and time, but fail to manufacture quantum computers in the end, then quantum computers will become the second "perpetual motion machine" in human history, which will be another huge loss for mankind.
It is not a loss at all, humans already get back a lot. Like for example the following breakthroughs:
https://www.quantamagazine.org/scientists-find-a-fast-way-to-describe-quantum-systems-20240501/
https://scirate.com/arxiv/1910.09071
https://www.quantamagazine.org/teen...to-quantum-recommendation-algorithm-20180731/

Maybe instead of looking at the breakthrough papers themselves, I should instead look for the papers which cited those breakthrough papers, to judge the actual impact and further developments of those breakthroughs, like (for the "Classical algorithms, correlation decay, and complex zeros of partition functions of quantum many-body systems" arxiv/1910.09071 paper):
https://scholar.google.de/scholar?cites=9747636377115730500
 

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