Add general SaveState instruction #1164
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Add implementation for statevector, density matrix, stabilizer, unitary, superop
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vvilpas
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Mar 16, 2021
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Summary
Adds
SaveStateinstruction, withsave_statecircuit method.This saves the state of the simulator in the appropriate format for the simulation method (ie. statevector, density_matrix, unitary, stabilizer).
Details and comments
Note that for density matrix simulation this is treated as a single data type like for the other simulation methods, rather than average as with the regular
save_density_matrixinstruction. Hence it is always the state of the simulator at the final shot (unless pershot=True and it is a list of states for each shot).