Quantum Computing: Benefits & Possibilities

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Discussion Overview

The discussion revolves around the potential benefits and limitations of quantum computing, exploring how it may improve computing capabilities compared to conventional computers. Participants examine both theoretical implications and practical applications, questioning the generality of speed improvements and the nature of qubits.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • Some participants propose that quantum computing could lead to faster computing and new capabilities beyond conventional computers.
  • Others argue that the benefits of quantum computing may be limited, noting that there are many problems where quantum computers could be slower than classical ones.
  • A question is raised about how qubits being in superposition (both 0 and 1) does not necessarily imply generally faster computing.
  • Some participants express uncertainty about the complexities of quantum computing and suggest further exploration of existing threads on the topic.
  • Clarifications are made regarding the nature of quantum superposition, emphasizing that it does not mean a qubit holds both values simultaneously in a way that guarantees speed improvements.
  • A reference to a cartoon by Scott Aaronson is shared, which is noted to contain valid points about quantum computing despite its humorous presentation.

Areas of Agreement / Disagreement

Participants express multiple competing views regarding the capabilities and limitations of quantum computing, indicating that the discussion remains unresolved.

Contextual Notes

There are limitations in understanding the implications of quantum superposition and the specific conditions under which quantum computing may outperform classical computing. The discussion reflects varying interpretations of these concepts.

ChrisisC
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With the development of quantum computing, just how much could it improve our lives. Obviously faster computing, but could we begin to do things than conventional computer can't?
 
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ChrisisC said:
With the development of quantum computing, just how much could it improve our lives. Obviously faster computing, but could we begin to do things than conventional computer can't?
The prospects of quantum computing seem to be very limited. There are some types of problems for which it is very much faster than regular computers and many more for which it is likely slower.

It is NOT in general "faster computing" for all algorithms.
 
phinds said:
The prospects of quantum computing seem to be very limited. There are some types of problems for which it is very much faster than regular computers and many more for which it is likely slower.

It is NOT in general "faster computing" for all algorithms.

If a qubit is both 1 and 2 at the same time, how would this not result in generally faster computing?
 
ChrisisC said:
If a qubit is both 1 and 2 at the same time, how would this not result in generally faster computing?
I don't know enough to answer that but it's more complicated than you think. There are numerous threads here on PF about quantum computing. I suggest a forum search. As always, a good place to start is with the links at the bottom of the thread.
 
phinds said:
I don't know enough to answer that but it's more complicated than you think. There are numerous threads here on PF about quantum computing. I suggest a forum search. As always, a good place to start is with the links at the bottom of the thread.

thanks for the suggestion!
 
ChrisisC said:
If a qubit is both 1 and 2 at the same time

It isn't.
 
PeterDonis said:
It isn't.

0 and 1 is what i meant to say
 
ChrisisC said:
0 and 1 is what i meant to say

Doesn't change the answer. Quantum superposition does not mean the qubit has both values at the same time.
 

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