Ikko Hamamura

I think if FermionicOp `A` and FermionicOp `B` are different, `A.to_matrix()` and `B.to_matrix()` must be different, and vice versa. I'm not sure if this representation is standard now. Do you...

I think `is_statevector_backend` function in Terra is problematic, but my PR was closed: https://github.com/Qiskit/qiskit-terra/pull/7015. The issue of identifying the type of simulator needs to be discussed more. I'm glad to...

@Cryoris Thanks. You are right. I certainly don't think that VQE.retrieve_job is necessary. What I really want is something that makes it easy to make a `MinimumEigensolverResult` from the job_id.

@Cryoris Thanks. It might be better to name the method differently.

@k-tamuraphys will make a PR about Lattice and FermiHubbard.

More issue: - [ ] Kagome Lattice - [ ] Honeycomb lattice

How about using Aer for statevector simulator instead of BasicAer?

Thank you. This enhancement is useful. It would be even more useful if we could also get the tensor product between FermionicOp and SpinOp.

> We should make sure that this optimizer can be serialized and sent to the runtime programs (which you can do by adding a settings property, see the other optimizers)...

@ShellyGarion Thanks. I checked RB: ```[ 0.00%] · For qiskit-terra commit 43b8450a : [ 0.00%] ·· Benchmarking virtualenv-py3.8 [ 12.50%] ··· Running (randomized_benchmarking.RandomizedBenchmarkingBenchmark.time_ibmq_backend_transpile--). [ 25.00%] ··· Running (randomized_benchmarking.RandomizedBenchmarkingBenchmark.time_ibmq_backend_transpile_single_thread--). [ 37.50%]...