Questions tagged [pyquil]
A Python library for quantum programming using Quil. http://docs.rigetti.com
10
questions
4
votes
1answer
237 views
Bloch sphere visualization using Cirq, ProjectQ, PyQuil
Is there a way to visualize the Bloch sphere using Cirq, ProjectQ, and/or PyQuil, as it is possible using plot_bloch_vector in Qiskit?
1
vote
1answer
52 views
How to create a qubit in an arbitrary state in PyQuil
In PyQuil, a qubit is initialised as $|0\rangle$ by default. Suppose, I want to initialise a qubit in an arbitrary state, say $\frac{1}{\sqrt{3}}|0\rangle+\sqrt{\frac{2}{3}}|1\rangle$. How to do this ...
1
vote
1answer
29 views
Pyquil run_and_measure gives the same output across all the trials: is this expected?
I tried to run the starter program demonstrated on this page:
http://docs.rigetti.com/en/stable/start.html#installing-the-qvm-and-compiler-on-linux-deb
With the following code:
...
0
votes
1answer
371 views
VQE for Beginners : Using Tutorial and Cirq
I have been following this tutorial: https://dkopczyk.quantee.co.uk/vqe/
I am using Cirq to try to teach myself VQE, replicate their results, and also try to understand more about ansatz for ...
2
votes
0answers
46 views
How to get the $T1$ specs for the Rigetti's quantum processor (Aspen 7)
I am trying to find the $T1$ coherence time for different qubits of Rigetti's quantum processor (Aspen 7) using Python. I tried using Specs() but encountered an ...
2
votes
0answers
53 views
Error during Forest openfermion installation
I tried installing Forest openfermion by
pip install forestopenfermion and I got the following long error message (cut):
...
2
votes
1answer
163 views
Newbie Project: Calculate a Mersenne Prime with Quantum Computing
I am new to the quantum world and wondering the bounds of which the technology is at the current state of the art: specifically in computing prime numbers.
I would like to, if possible, create a ...
6
votes
1answer
690 views
How to create the oracle matrix in Grover's algorithm?
I'm trying to implement Grover's algorithm in pyQuil, but I'm having trouble creating the oracle matrix given the function $f$, where $f(x)=1$ if $x=w$ and $f(x)=0$ otherwise. In most of the ...
6
votes
2answers
873 views
Measuring the Hamiltonian in the VQE
I am trying to implement VQE in pyQuil and am dumbfounded by how to measure the expectation value of a general Hamiltonian on $\mathbb{C}^{2^n}$ i.e. determine $\langle\psi , H \psi\rangle$ on a ...
13
votes
2answers
384 views
Hamiltonian simulation with complex coefficients
As part of a variational algorithm, I would like to construct a quantum circuit (ideally with pyQuil) that simulates a Hamiltonian of the form:
$H = 0.3 \cdot Z_3Z_4 + 0.12\cdot Z_1Z_3 + [...] +
- ...
