Comments (7)
So by state you mean individual amplitudes, rather than initializing to a classical bit-string?
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Yes.
An alternative approach, for this use case, is a "PermutationSimulator" which only allows classical gates and then spits out the final permutation.
from projectq.
Ok the idea was actually to use the cheat
function for this. Unfortunately, the default pybind export of std::vector performs a copy each time a switch between Python and C++ is made, which is why this currently does not work. At some point, we should implement a custom version of this and update the C++ export.
from projectq.
Oh and we'll definitely need a permutation simulator.
from projectq.
I'm currently working on testing out different initial states for the VQE so being able to initialize the ProjectQ Simulator to a specific state would be very useful!
from projectq.
I'll add an extra function over the weekend since I currently don't see a quick fix for the pybind issue with cheat.
from projectq.
This feature has been added to the Simulator in the develop branch, see
http://projectq.readthedocs.io/en/latest/projectq.backends.html#projectq.backends.Simulator.set_wavefunction
Thanks @thomashaener
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Related Issues (20)
- The code of QPE. HOT 2
- No Python, can projectq be used online? HOT 10
- About Time Evolution gate
- REST API update HOT 1
- Qasm interface HOT 5
- Install fails on macOS Big Sur
- Problems running an example notebook HOT 10
- Version 0.6.1 crashes on Linux HOT 2
- Probability distribution of qubits' classical value HOT 2
- How to check if projectq is running on C++ Simulator HOT 8
- not work on macbook with M1 Chip HOT 21
- No mapper is present in the compiler engine list! HOT 1
- IonQ uses incorrect path for backend lookup in v0.7.2 HOT 1
- Implement IonQ native gates support HOT 2
- Script runs on the simulator but encounters error on real IBM QE backend regarding a non-existent 'u2' gate HOT 8
- Python 3.9.12 on OSX HOT 6
- Minor : MacOSX 3.9 Intel work but need to use python3 HOT 1
- Issue with pip installation for version 0.8.0 HOT 3
- Reporting a vulnerability HOT 1
- Breaking changes in the AQT API
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