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Quantum computing
1. Quantum computing
Quantum computing is becoming an important area in computer and information science.
2. Quantum computing in brief
Quantum computing:
much faster than conventional computers
best for problems that allow probabilistic solutions
cannot solve all problems - despite the hype
[exponential speedup not clearly defined, like entanglement]
3. Quantum computing analogies
Quantum computing analogies: pick the best way
walk on foot: pencil and paper
drive by car : conventional computer (go most anywhere)
fly by jet : quantum computers (does not go anywhere, sometimes impractical)
no way to get to Mars, nearest star, etc.
4. Qubits
In quantum computing, a "
qubit" or "
q-bit" stands for "
quantum bit" where "
bit" stands for "
binary digit".
5. Bit as binary digit
John Tukey (American mathematician and statistician) , working with John von Neumann, coined the term "
bit" as "
binary digit". The classical "
bit" has one of two values, which can be represented as
0 (usually taken as
false) and
1 (usually taken as
true).
The term "
bit" was first used in an article by Claude Shannon in 1948.
6. Q*bert
A qubit in quantum computing is
not related to the video game Q*bert from 1982.
In more recent times, Q*bert made an appearance in the animated feature movie Wreck-It Ralph (2012).
7. Bits and p-bits and q-bits
The name qubit is short for "
quantum bit".
8. Classical bit versus qubit
Here is one way to see the difference between the classical bit and the qubit.
... more to be added ...
9. End of page
