# Tag Info

## New answers tagged measurement

### Qiskit - How to get statevector for each shot?

To your first question, you see the statevector of the last shot performed. The answer by Egretta Thula will get you the ...
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### Qiskit - How to get statevector for each shot?

You can use save_statevector simulator instruction. To save the statevector for each shot, set pershot value to ...
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1 vote
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### Why does having two classical registers sometimes only yeild one bit?

This happens because your convert the bit-strings to integers. output.append(int(entry)) Hence, the leading zeros are removed. If you want to keep the bit-string ...
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### Readout Error in Qiskit: What is a reasonable model?

I think you are looking for this https://github.com/qiskit-community/qiskit-community-tutorials/blob/master/ignis/measurement_error_mitigation.ipynb https://github.com/Qiskit/qiskit-tutorials/blob/...
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### Does the von Neumann entropy equal the smallest accessible Shannon entropy?

No. Consider the trivial case where $\{\Pi_j\} = \{I\}$. Then $p^\Pi = (1,)$ and $H(p^\Pi) = 0$. This holds even if $S(\rho) > 0$.
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