You are currently viewing SemiWiki as a guest which gives you limited access to the site. To view blog comments and experience other SemiWiki features you must be a registered member. Registration is fast, simple, and absolutely free so please, join our community today!




Results 1 to 8 of 8

Thread: Quantum computing - help!

  1. #1
    Member
    Join Date
    May 2018
    Posts
    26
    Thumbs Up
    Received: 3
    Given: 25

    Quantum computing - help!

    It would be a challenge to express just how deeply ignorant I am of quantum computing.

    The word seems to be thrown around rather easily by marketers - knowing a little bit about how tech marketing departments work I am naturally suspicious.

    I'd be really keen to know what you guys think of the promises made about quantum computing - is it that revolutionary? will the technology undergirding it ever be implemented on a broad scale? how long will it be (if ever) before we see it rolled out?

    As ever, I apologise for being utterly useless

    Moose

    0 Not allowed!
     

  2. #2
    Blogger Daniel Payne's Avatar
    Join Date
    Sep 2010
    Location
    Tualatin, OR
    Posts
    3,248
    Thumbs Up
    Received: 383
    Given: 451
    Moose,

    Wikipedia has a nice list of companies doing quantum computing research:

    List of companies involved in quantum computing or communication - Wikipedia

    A top 18 list of quantum research companies:

    What is Quantum Computing ? Top 18 Quantum Computing Companies - Compare Reviews, Features, Pricing in 2018 -PAT RESEARCH: B2B Reviews, Buying Guides & Best Practices

    They have to cool the circuits to exhibit quantum behavior near absolute Zero, which takes some effort:

    At what temperature do Quantum computers function, and why? - Quora

    Every year the researchers announce more bits in their quantum computers.

    The hype is high for quantum, while actual results are low in 2018. Quantum computers should be good for cryptography applications.

    Big names in quantum include: IBM, Intel, Microsoft, Google.

    1 Not allowed!
    Daniel Payne, EDA Consultant
    www.MarketingEDA.com
    503.806.1662

  3. #3
    Influencer U235's Avatar
    Join Date
    May 2014
    Posts
    93
    Thumbs Up
    Received: 41
    Given: 70
    Quote Originally Posted by MooseGoose View Post
    It would be a challenge to express just how deeply ignorant I am of quantum computing.

    I'd be really keen to know what you guys think of the promises made about quantum computing - is it that revolutionary?
    Yes, quantum computing is revolutionary.

    But it's not a direct replacement for classical, general purpose computing.

    While information in a classical computer is stored and manipulated as bits representing 0 or 1, a qubits of a quantum computer computer can be prepared in a such a way as to represent a superposition of both 0 and 1 together. Performing an operation on a qubit, could be viewed as performing the operation on 0 and 1 at the same time, leading to a sort of (quantum) parallelism.

    While a classical computer can store and operate on any single 64 bit word in a register, a 64 qubit register could hold and work on all 2^64 combinations at the same time.

    There are some algorithms which could make use of this fact to dramatically speed-up large number factorisation, or sorting etc, as well as for the efficient simulation of quantum systems themselves.

    I believe, the largest entangled state achieved in a lab is 18 qubits.

    The D-Wave machines which Google, Lockheed martin, and Nasa have bought, aren't conventional quantum computers, but instead implement quantum annealing, and it's pretty controversial as to what they are actually doing.

    2 Not allowed!
    EDA Application Engineer
    Interests: TCAD/ MEMS/ Silicon Photonic Circuits/ EM Simulation

  4. #4

  5. #5
    Admin Daniel Nenni's Avatar
    Join Date
    Aug 2010
    Location
    Silicon Valley
    Posts
    4,545
    Thumbs Up
    Received: 990
    Given: 2,491

    1 Not allowed!
    Now available in print or Kindle: "Mobile Unleashed: The Origin and Evolution of ARM Processors In Our Devices"

  6. #6
    Blogger Bernard Murphy's Avatar
    Join Date
    Aug 2015
    Location
    California Gold Country
    Posts
    1,168
    Thumbs Up
    Received: 309
    Given: 380
    Quantum computing shows promise in helping solve quantum problems (unsurprising), so potentially useful in physics, inorganic chemistry and organic chemistry for modestly-sized molecules. Agree with U235 - it is not a replacement for conventional computing.

    1 Not allowed!
     

  7. #7
    Member
    Join Date
    May 2018
    Posts
    26
    Thumbs Up
    Received: 3
    Given: 25
    Thanks all for your answers!

    One more question - if we agree that Quantum computing is indeed a sort of revolution - the further question I would then ask is, how does this revolution ramify into the world of semis?

    Is it going to have a major effect on the industry? if so, where will the impact be felt?

    Moose

    0 Not allowed!
     

  8. #8
    Blogger Bernard Murphy's Avatar
    Join Date
    Aug 2015
    Location
    California Gold Country
    Posts
    1,168
    Thumbs Up
    Received: 309
    Given: 380
    Quote Originally Posted by MooseGoose View Post
    Thanks all for your answers!

    One more question - if we agree that Quantum computing is indeed a sort of revolution - the further question I would then ask is, how does this revolution ramify into the world of semis?

    Is it going to have a major effect on the industry? if so, where will the impact be felt?

    Moose
    I may live to regret this response, but I doubt it. QC and "conventional" semi feel like they are on separate tracks. There may be synergies but not entirely clear since one operates at room temp and the other has to operate at very low temperatures.

    0 Not allowed!
     

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •