Quantum computing framework for writing programs and applications
Qiskit is an open-source software development kit (SDK) for working with quantum computers at the level of circuits, pulses, and algorithms.
Questions tagged [qiskit]
237 questions
0
votes
1 answer
Qiskit NameError: name 'q0' is not defined
I wrote the following code to implement the Grover's algorithm using 3-qubits.
from qiskit import*
from qiskit.tools.visualization import*
list = [q0,q1,q2]
def ccz(qci,q0,q1,q2):
qci.h(q2)
qci.ccx(q0,q1,q2)
qci.h(q2)
def…
Makoto Nakai
- 61
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- 8
0
votes
2 answers
Jupyter notebook always gives BrokenProcessPool error while executing qiskit code
defining function for toffoli gate:
def toffoli(qc,i1,i2,i3):
qc.h(i3)
qc.cx(i2,i3)
qc.tdg(i3)
qc.cx(i1,i3)
qc.t(i3)
qc.cx(i2,i3)
qc.tdg(i3)
qc.cx(i1,i3)
qc.t(i3)
qc.tdg(i2)
qc.cx(i1,i2)
qc.h(i3)
qc.tdg(i2)
qc.cx(i1,i2)
qc.t(i1)
qc.s(i2) …
0
votes
1 answer
IBM QISKit local simulator error, can't find gcc
When I want to run the Bell example code from qiskit.org in macOS terminal it throws this error:
ERROR:qiskit.backends.local.qasm_simulator_cpp:ERROR: Simulator encountered a runtime error: dyld: Library not loaded:…
Gábor
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- 1
0
votes
1 answer
QISKit Implementation of the Cuccaro Adder
I'm new to quantum computing and am trying to codify a 2bit Cuccaro et all adder as described here: https://arxiv.org/pdf/quant-ph/0410184.pdf and here: https://arxiv.org/pdf/1202.6614.pdf. (I got the links from the Full Users Guide).
I am having…
kaoao
- 11
- 4
-1
votes
1 answer
AttributeError: can't set attribute in qiskit Grover Algorithm
Here is my code
def gen_grover(width):
oracle = QuantumCircuit(width, name='q')
oracle.z(width-1)
full_circuit = GroverOperator(oracle, insert_barriers=False, name='q')
full_circuit = dag_to_circuit(circuit_to_dag(full_circuit))
…
-1
votes
1 answer
AWS braket python sdk: user is not authorized to perform on quantum device
I have installed boto3, aws cli, and python-braket-sdk. I have run aws configure, and config with my IAM user. My IAM user isn't root user, but it has AdministratorAccess, AmazonBraketFullAccess, AmazonBraketJobsExecutionPolicy policies.
But if I…
voxter
- 853
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-1
votes
1 answer
Quantum Neural Networks - Noise Models
Surveying the QML module in Qiskit for a quantum neural network project and wondering if there is support to add noise models and run noisy simulations?
Going through this tutorial and wondering how one would define a noise model in the argument of…
Zohim Chandani
- 29
- 4
-1
votes
1 answer
How can I import numpy correctly?
I am using qiskit (I am an absolute beginner with some experience with Java and know basic python) but when I tried to run an example code which uses numpy it gave me this error. I tried reinstalling it but it gave me the same error.
I have tried…
invalidexplorer
- 11
- 1
- 1
- 4
-1
votes
1 answer
Is current information about readout-errors of qubits on IBM quantum devices available on some internet page?
I've used to check the readout errors on subpage of https://quantumexperience.ng.bluemix.net, but with the new IBM Q Experience version it's no longer possible, as new composer page doesn't have this information.
I'm perfectly aware that there are…
Tomasz Rybotycki
- 3
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- 3
-1
votes
1 answer
Why python doesn't see the members of quantumCircuit class qiskit
I`m trying to learn the programming on quantum computers.
I have installed qiskit in VS Code (all qiskit extentions available in VS Code market) , python compilator (from Vs Code market "Python" and "Python for VSCode"). I have set up my qikit API…
v0rt3x
- 83
- 1
- 6
-5
votes
1 answer
Why am I getting this Qiskit Error code: 'qr' not defined?
Qiskit error code 'qr' not defined
It should be defined I expect. It may be the difference in the version of software on the video I watched vs my software. I tried 'import qiskit' and it still gave me the error code. I'm not sure but I'm just…
