How do you access the IBM quantum computer backend using API tokens?

Hi there! I am trying to connect to the IBM quantum computing system from my Jupyter Notebook. I know that one can set it up with API tokens. Can anyone give a step by step guidance?

Hi. You could find the tutorial here.
You could access your API token in your account setting.
And then you use this for the first time.

IBMQ.save_account(TOKEN)

After that, each time you could use

IBMQ.load_account()

to connect your IBMQ account.
Hope it helps.

First, you need to have a IBMQ account so that you can use their QPU cloud service. Register here: quantum-computing.ibm.com/

• Copy your own API token. In your home page, you can see and copy the token.

• save and load your account in the local device

from qiskit import IBMQ

IBMQ.save_account(TOKEN)
IBMQ.load_account() # Load account from disk
IBMQ.providers()    # List all available providers

• Get a backend

You can show a list of backends which you can access

provider = IBMQ.get_provider(hub='ibm-q')
provider.backends()

Choose one backend from the list

backend = provider.get_backend('ibmq_vigo')
backend

• Run your quantum circuit

Use a tool to help you visualize the queue on QPU

from qiskit.tools import jupyter
%qiskit_job_watcher

Then run the circuit on the backend!

backend.run(qc)