Measurement in obscure basis
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Dear all, I have recently been reading about certain protocols, and only just realized that people tend to discuss only the computational basis X and the Hadamard basis Z. I thus had a super quick search for measurement and came across this Post. I fully understand what it means, as this is what I understood, if I want to measure a state in a specific basis, I could consider a rotation in a different way. Instead of rotating the qubit about the computational basis, I can interpret the rotation as rotating the specific basis to be the new computational basis. Do my projection onto the computational basis, which would be the desired obscure basis. However, I'm wondering if anyone knows how measurement is actually done. I'm assuming, for optics, that there will be an X waveplate right in front of the detector to project the image and the detector to measure it. So do people tend to consider only computational and Hadamard for the sake of it, or is it more for the purpose that experimentally, those are the only two real options, so no need to realistically consider others? Let me know if my phrasing is bad; I have been told this in previous posts, and I can try to clarify. submitted by /u/T1lted4lif3 [link] [comments]