3 ms·
If you are comfortable (mathematically) with the idea of "a gate" and "a qubit", then Wikipedia is surprisingly good at explaining what each new gate does. Oth
by krastanov 8y ago
If you are comfortable (mathematically) with the idea of "a gate" and "a qubit", then Wikipedia is surprisingly good at explaining what each new gate does.
Otherwise the standards reference that starts from scratch (prerequisites being linear algebra and intro quantum mechanics) is Quantum Computation and Quantum Information by Nielsen and Chuang. It is a very thick book and it takes a sustained effort to read it, but stackexchange is always eager to help. Preskill's lecture notes are amazing as well.
Regrettably, I do not know of a good book that does not have the prerequisites I mentioned.
- amelius 8y agoWith classical gates it is possible to make a complete characterization by enumerating the inputs and corresponding outputs (e.g. in table format). Would that be easy/possible here? How big would the table be?
- krastanov 8y agoSomething like that is possible. A quantum gate is a linear operation, therefore it can be represented as a matrix (it happens to be a unitary matrix). A gate acting on N qubits would be a square matrix of 2^N rows.
- adamnemecek 8y agoMike and Ike don’t mention for example homodynes afaik.