Use this tag for questions about IBM's Quantum Service - Circuit Composer & Quantum Lab. DO NOT use this for questions about general Qiskit issues (use [qiskit] for that).
Questions tagged [ibm-q-experience]
672 questions
7
votes
2 answers
How can I get access to IBM Q 20 Tokyo and IBM Q 20 Austin?
How can I get access to IBM Q 20 Tokyo and IBM Q 20 Austin?
In the Q- experience site there is written that the access is for IBM clients only and in the profile there is a "promotional code" that you need to put to gain access to those chips.
How I…
Daniel Vainshtein
- 421
- 2
- 14
7
votes
2 answers
How do I get the names of all currently available IBMQ devices?
How do I get the names of all currently available IBMQ devices?
Holger
- 161
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- 5
6
votes
1 answer
How to prepare mixed states using IBM quantum experience?
I want to prepare some mixed states regarding a project that I am doing, however, I am not sure how to do that using IBM Q. Experience circuit composer. Basically, I am looking to prepare maximally mixed and non-maximally mixed quantum states.
I…
Hridey Narula
- 61
- 2
6
votes
1 answer
My IBM quantum account has been disabled
As shown in the picture above, my IBMQ account is unavailable, and I found that my friend's account is also unavailable, but I have not received any email or message notification. what happened?
wei zi
- 327
- 1
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5
votes
1 answer
What is the IBM Q credits?
I find in this link that
"A User has a maximum of 15 credits, and these credits are replenished upon the greater of 24 hours or when your execution has run off the queue."
But what is credit? Is it necessary to deduct one credit when using IBMQ…
chiyue pan
- 59
- 2
5
votes
1 answer
Is there an archive of IBMQ calibration data?
Specifically, I'd like to see the ibmq_london calibration file for April 15, 2020.
Jed Brody
- 95
- 4
4
votes
1 answer
Data file read/write from within IBM Q-Experience Jupyter notebook
In IBM Q-Experience how can I upload a data file that I intend to read from the python code?
Amitava Chakraborty
- 167
- 10
4
votes
1 answer
Back End for Reset Gate
IBM's simulator allows the use of a reset gate ($|0\rangle$ gate) however when I try to run a circuit using this gate on the hardware it fails to execute. Is there a plan to physically realize this gate?
I am specifically interested in running…
bRost03
- 579
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4
votes
0 answers
Incorrect probabilities in IBMQ Mid-circuit measurements
I calculated the probabilities for two measurements using mid-circuit measurements feature in IBMQ by following circuit:
qc_simp = QuantumCircuit(1,2)
qc_simp.h(0)
qc_simp.barrier([0])
qc_simp.measure([0],…
Akhil Pratap Singh
- 141
- 2
4
votes
0 answers
What is the actual precision of the IBM quantum computer?
In working with the IBM quantum computer, one can use for example the composer in order to build simple quantum algorithms. Essentially, one usually feeds a phase in order to affect one of the qubits. While for instance phases like $\pi/2$ can be…
user2820579
- 619
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4
votes
0 answers
Adding team to our IBM Quantum Experience account
I have an account and API token on IBM Quantum Experience (https://quantum-computing.ibm.com/)
I would like to add team members to the account, so that everyone can use it without sharing login credentials.
It doesn't look like IBMQ is integrated…
Marcelo Bursztein
- 41
- 1
3
votes
2 answers
Can we capture phase in IBM Quantum Experience?
I have a sample IBM experience circuit which generates $$\frac{1}{2}(|00\rangle - |01\rangle - |10\rangle + |11\rangle)$$
When we measure the state will be either $|00\rangle$/$|01\rangle$/$|10\rangle$/$|11\rangle$.
I know that state phase…
Adam Levine
- 451
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3
votes
1 answer
How to fix an error: AttributeError: 'IBMQFactory' object has no attribute 'get_backend'
when I tried to execute task in "Jupiter notebook" in the IBM Q experience (the browser),
backend=IBMQ.get_backend(name ='ibmqx2')
job4Cal=execute(qc,backend,shots=8192)
job_monitor(job8Cal, monitor_async=True)
Calresult =…
Daniel Vainshtein
- 421
- 2
- 14
3
votes
1 answer
How to put a quantum computer on the cloud?
What are the infrastructures needed to build a cloud quantum computing service like IBM Q Experience?
It seems this is not a trivial task. IQX has been running for more than 3 years and yet it is taking ages for Google to come up with one.
Junye Huang
- 662
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3
votes
3 answers
IBM 53 qubit cloud access
IBM announced a 53 qubit chip.
Will the advertised chip be available for non-paying users, or only to IBM clients?
sandualuclopotaru
- 93
- 4