I am getting this error while running the code related to quantum computing

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Karna
Karna 2025-7-11
回答： Steven Lord 2025-7-11
I have install necessary package
"MATLAB Support Package for Quantum Computing"
Code I have given:
plotBlochSphere([1; 0])
title("|0> state on Bloch sphere")
Error:
Unrecognized function or variable 'plotBlochSphere'.

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回答（1 个）

Steven Lord
Steven Lord 2025-7-11
If you're following the example from this documentation page, note this line (I added emphasis.) "To plot any quantum state of a qubit on the Bloch sphere, use the plotBlochSphere function (provided in the Helper Functions section)." You will need to copy the code from the Helper Functions section at the end of that page into a function file plotBlochSphere.m. Copy all of the code in the last code section on that page, as plotBlochSphere uses the helper function mapToBlochSphere.

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