While this seems planted and trite (much like the "because it's 2015" answer), I have to confess that I don't get quantum computing. A qubit can hold multiple values, it seems. Okay, that's a data density improvement (presuming a quibit is as dense as a traditional bit). How does that improve computing power (especially by the many magnitudes)? Do you multiply a qubit of infinite values against a quibit of infinite v…
Justin Trudeau explains the basics of quantum computing to reporters
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Re: Justin Trudeau explains the basics of quantum computing to reporters
#12Re: Justin Trudeau explains the basics of quantum computing to reporters
#13I see no evidence that his knowledge is any better than a layman's, and this really feels like a promotional piece. It's pretty sad that people are surprised or impressed when a politician has a layman's understanding of something in science.
Really? I got the impression that he didn't really get the significance of Q-bits and just thought of it as 'stores more stuff than a digital-bit; MORE GB!!!'.
At the same time, I'd be surprised if a man-on-the-street interview would give anywhere near as good of an answer.
> It's pretty sad that people are surprised or impressed when a politician has a layman's understanding of something in science.
Sad yes, but probably a mentality brought on by the number of U.S. politicians who activity don't believe and don't understand many things in science (great answer from Carl Sagen on Charlie Rose on this: https://youtu.be/U8HEwO-2L4w?t=56).
Re: Justin Trudeau explains the basics of quantum computing to reporters
#14While this seems planted and trite (much like the "because it's 2015" answer), I have to confess that I don't get quantum computing. A qubit can hold multiple values, it seems. Okay, that's a data density improvement (presuming a quibit is as dense as a traditional bit). How does that improve computing power (especially by the many magnitudes)? Do you multiply a qubit of infinite values against a quibit of infinite v…
Two (entangled) qubits could hold 00, 01, 10, 11 simultaneously and perform calculations on these four values simultaneouslty.
...
100 (entangled) qubits could hold 2^100 distinct values simultaneously and perform calculations on them simultaneously.
That's the basic idea. The problem is keeping entangled state that's becomes harder and harder as number of entangled qubits grows.
Also there are limitations in extracting of calculations results from system of qubits, so not all algorithms can be speed up on quantum computers (but e.g. integer factorization can).
Re: Justin Trudeau explains the basics of quantum computing to reporters
#15I see no evidence that his knowledge is any better than a layman's, and this really feels like a promotional piece. It's pretty sad that people are surprised or impressed when a politician has a layman's understanding of something in science.
Re: Justin Trudeau explains the basics of quantum computing to reporters
#16While this seems planted and trite (much like the "because it's 2015" answer), I have to confess that I don't get quantum computing. A qubit can hold multiple values, it seems. Okay, that's a data density improvement (presuming a quibit is as dense as a traditional bit). How does that improve computing power (especially by the many magnitudes)? Do you multiply a qubit of infinite values against a quibit of infinite v…
2 bit => 2 ^ 2 => 1 of 4 possible state
2 qbit => 4 of 4 possible states. That's 4 times the information (although extraction of the information is limited)
With bigger numbers:
10bit => 1 of 1024 possible states
10qbit => 1024 of 1024 possible states (1024 times as much)
Re: Justin Trudeau explains the basics of quantum computing to reporters
#17I see no evidence that his knowledge is any better than a layman's, and this really feels like a promotional piece. It's pretty sad that people are surprised or impressed when a politician has a layman's understanding of something in science.
Re: Justin Trudeau explains the basics of quantum computing to reporters
#18I see no evidence that his knowledge is any better than a layman's, and this really feels like a promotional piece. It's pretty sad that people are surprised or impressed when a politician has a layman's understanding of something in science.
Re: Justin Trudeau explains the basics of quantum computing to reporters
#19I see no evidence that his knowledge is any better than a layman's, and this really feels like a promotional piece. It's pretty sad that people are surprised or impressed when a politician has a layman's understanding of something in science.
The Canadian media is highly supportive of Trudeau at the moment and, with the exception of more reputable periodicals like the Globe and Mail and the National Post, are taking every opportunity to gush. That said, Trudeau has shown a significant capacity to leverage those around him to display competencies he wouldn't have on his own.
[0] http://www.cbc.ca/news/trending/andrew-coyne-resigns-editor-...
Re: Justin Trudeau explains the basics of quantum computing to reporters
#20While this seems planted and trite (much like the "because it's 2015" answer), I have to confess that I don't get quantum computing. A qubit can hold multiple values, it seems. Okay, that's a data density improvement (presuming a quibit is as dense as a traditional bit). How does that improve computing power (especially by the many magnitudes)? Do you multiply a qubit of infinite values against a quibit of infinite v…
So for example, let's say you wanted to figure out if some enormous number is prime. If you get your program right you could feed it to a quantum computer and all possible states of prime/non-prime would be measured at once resulting in the answer (state) being available the moment you "observe" it.
From this perspective quantum computing can be nearly infinitely faster than traditional computers while at the same time being mostly useless for every-day tasks such as surfing the web.