Very helpful, thanks!

This is great to hear!

You can use Sampler instead. I will show how this can be done in a future video dedicated to Primitives.

Great video! I am also getting stuck on how to implement get_counts on the new version

@@oluwapelumiolubayo2043 See the next episode on Primitives, where I show how to get counts with SamplerV2

The convention is to assume that the qubits start in the 0 state. For the two-qubit example, we then apply a Hadamard gate to the 0th qubit, so it would no longer be in the 0 state.

Unfortunately, I don't think there's a feature for estimating resource cost, especially on a device by device basis, until after you submit.

It should work for any backend, as long as you swap out the backend name "ibm_brisbane" with your target backend. Some of the information being sent to the preset pass manager includes the coupling map, native gates, and number of gates, and these properties can of course change from device to device.

@@DerekWangIBM QiskitError: 'Number of qargs does not match (2 != 100)' I keep having this error from the operators_transpiled_list. What could be the issue?

@@techjunk8467 It appears you did not create operators with 100 qubits. Instead, you are applying a layout for 100 qubits on observables that have 2 qubits, which are likely leftover from the initial 2-qubit example.

I'm using the default dark color theme in Visual Studio Code.

@@DerekWangIBM I mean your QiskitRuntumeService is written in nice green color which is readable, but my code is all shown in white🥲

@@DerekWangIBM I was wondering about the color of the code because I can see nice readable green color from your library code but not in mine.

You can visit the IBM quantum website, look for a careers page, and you might find something that interests you , you can apply there

It's possible you do not have access to that particular backend that I use in the video. Use a backend that you do have access to.

Sure, one could do that too. In fact, we do exactly what you suggest in an upcoming video :)

@@DerekWangIBM Can't wait to see it, i'm trying to get a grasp of qiskit but there is son few documentation on version 1.X (except official one of course)

It sounds like `conda` is not active. See if it's installed by typing `conda --version` in your terminal. If conda is indeed there, try activating it: `conda init`. When conda is active, you should see (base) before your username. Once it's active, you should be able to create an environment within conda.

Happened to me also. You have to start your terminal in "MiniConda mode". Go to Start Menu and type 'Anac' and there should be something like "Anaconda Prompt (miniconda3)". Start that command/script/program. Someone smarter than me should know how to do this in the VS Code.

@@HrvojeKalic Thank you! I only showed installation on Mac in the video. Glad that differences with PC could be resolved here.

@@HrvojeKalic thank you sir i will try and see if the problem is solved or not

@@DerekWangIBM thanks sir

Run the block that defines the `qc` before trying to pass it into the Estimator.

since I restarted the kernel after doing the pip install qiskit_aer at this point, I had to run all to get the variables back

The Estimator().run() functions expects `qc_transpiled` and `operators_transpiled_list` to be lists, not iterators. So make sure you've actually instantiated these variables as lists.

@@DerekWangIBM The thing is, I followed exactly every step. The cell where these variables are defined run well. The other one does not. Not really sure what am I missing here. def get_quantum_circuit(n): qc = QuantumCircuit(n) qc.h(0) for i in range(n-1): qc.cx(i, i+1) return qc n = 100 qc = get_quantum_circuit(n) # qc.draw(output='mpl') from qiskit.quantum_info import SparsePauliOp operator_strings = ['Z' + 'I' * i + 'Z' + 'I' * (n - i - 2) for i in range(n - 1)] print(operator_strings) print(len(operator_strings)) operators = [SparsePauliOp(operator_string) for operator_string in operator_strings] from qiskit_ibm_runtime import QiskitRuntimeService from qiskit.transpiler.preset_passmanagers import generate_preset_pass_manager backend_name = "ibm_brisbane" backend = QiskitRuntimeService().get_backend(backend_name) pass_manager = generate_preset_pass_manager(optimization_level=1, backend=backend) qc_transpiled = pass_manager.run(qc) operators_transpiled_list = [op.apply_layout(qc_transpiled.layout) for op in operators] from qiskit_ibm_runtime import EstimatorV2 as Estimator from qiskit_ibm_runtime import EstimatorOptions options = EstimatorOptions() options.resilience_level = 1 options.optimization_level = 0 options.dynamical_decoupling.enable = True options.dynamical_decoupling.sequence_type = "XY4" estimator = Estimator(backend, options=options) job = estimator.run([(qc_transpiled, operators_transpiled_list)]) job_id = job.job_id() print(job_id)

qc.draw()

The module IBMQ does not exist in Qiskit I believe. If you're trying to access providers and backends, you'll need to `pip install qiskit-ibm-runtime`.

@@DerekWangIBM thanks for your reply. I already have installed ibm run time in my system still it is not working.

Pauli is referred to matrices, specif a set of three 2 × 2 complex matrices that are Hermitian, involutory and unitary.

Rather ask who is pauli