Quantum computing framework for writing programs and applications
Qiskit is a quantum computing framework for writing programs and applications, and performing quantum experiments.
Questions tagged [qiskit]
120 questions
4
votes
1 answer
How to create a new quantum gate and qubit initialised to a certain value
I am trying to implement the Quantum HHL algorithm on QISKit package of IBM on Python. I have tried searching the documentation for a method to initialize a qubit to a certain value and to create a new unitary gate with specified values.
In the…
Parth Jatakia
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- 5
3
votes
2 answers
Qiskit Transpiler for quantum circuits
Okay, so, in Qiskit there is the transpile() function (see documentation). My understanding of a transpiler is best described as a way of converting one set of gate operations to another set of gate operations, with the intent of running an…
Amelie Schreiber
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- 5
3
votes
2 answers
How to create unitary gate from np.array in qiskit?
Hi all: Cirq offers a way to create a unitary gate from an array. I tried doing the same in Qiskit but have not been able to quite make it. Here is a sample code with what I could put together so far. Also, is there a way to apply the controlled…
Vox
- 143
- 8
3
votes
1 answer
Quantum Programming . . . How?
So I understand some of the basic ideas with setting up a quantum program . . . libraries, classical logic feeding to a quantum API, all that. I even get that there are quantum operations you apply.
Where I am struggling is how do you figure out…
ThatCampbellKid
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3
votes
4 answers
Cannot import Aer from Qiskit 0.7
I've created a new virtual environment in Anaconda and installed several packages using pip (namely, numpy, scipy, matplotlib, qiskit and maybe 1 or 2 more). I open the interpreter and try to import a module from Qiskit:
from qiskit import Aer
As a…
Alexey Uvarov
- 143
- 1
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3
votes
1 answer
Install qiskit on MacOS HighSierra Error: No such file or directory: 'qiskit.egg-info'
I was trying to install QISKit via the pip method as mentioned on their webpage.
However, after many trials, this method doesn't seem to work and I am getting the following error on the terminal.
Compiling QISKit C++ Simulator
creating out
…
Parth Jatakia
- 75
- 5
2
votes
2 answers
QISKIT error - numpy.ndarray size changed, may indicate binary incompatibility. Expected 88 from C header, got 80 from PyObject
I ran this
from qiskit import QuantumCircuit, execute, Aer
from qiskit.visualization import plot_histogram
and got the below error
---------------------------------------------------------------------------
ValueError …
X10nD
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2
votes
0 answers
The Tutorials in Qiskit: Option Pricing with qGANs
# Set upper and lower data values
bounds = np.array([0.,7.])
# Set number of qubits used in the uncertainty model
num_qubits = [3]
# Set entangler map
entangler_map = []
for i in range(sum(num_qubits)):
entangler_map.append([i, int(np.mod(i+1,…
LOGA
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- 1
2
votes
1 answer
Unexpected keyword argument 'datatime' qiskit provider
I'm trying to set datatime calling backend.properties qiskit.
this is my code :
from qiskit import *
from qiskit.providers.ibmq import *
provider = IBMQ.get_provider(hub='ibm-q')
provider.backends(simulator=False)
backend =…
2
votes
0 answers
Quantum amplitude encoding
I would like to perform the Quantum Fourier Transform (QFT) of a sequence of, say, 8 elements. I have then the problem of encoding the sequence of 8 elements into 3 qubits.
My question is how performing this task with Qiskit.
I would say that one…
Vitality
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2
votes
1 answer
Is there any systematic way to decompose a two-level unitary matrix into single-qubit and CNOT operations?
I would like to make a quantum circuit from the following matrix.
matrix to be transformed into qubit operations
How can I decompose this matrix into qubit operations such as Rotation Y, Control-NOT and so on ?
FYI, I read a book named "Quantum…
Ashy
- 159
- 5
2
votes
1 answer
How to make a gate which generates |0> or |1> based on a parameter?
I would like to make a single-qubit gate which gives |0> or |1> with reference to a parameter.
For example, I set a parameter theta in range of 0 to 2π. When theta is in range of 0 to π, the gate returns |0> and when theta is in range of π to 2π,…
Ashy
- 159
- 5
2
votes
1 answer
How to call EnergyInput() function in Qiskit python?
I want to implement SVM with Qiskit. I used this following code.
from qiskit import Aer
from qiskit.aqua.utils import split_dataset_to_data_and_labels
from qiskit.aqua.input import get_input_instance
from qiskit.aqua import run_algorithm
n =…
Protik Nag
- 411
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- 14
2
votes
1 answer
Unable to find module qiskit_aqua.algorithms
pip-install qiskit-aqua completed successfully.
Following is ths stack trace:
ModuleNotFoundError Traceback (most recent call last)
in ()
2 import sys
3 from datasets import…
Abhishek
- 23
- 3
1
vote
1 answer
Qiskit Nature VQE print full quantum circuit
I am doing VQE using Qiskit Nature. I want to see how my final quantum circuit looks like. How to print the whole quantum circuit (like an ansatz)?
Farida
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