Issues

• Redundancy in UCJ operator parameterization

  qiskit-community/ffsim#702 · Filter by author kevinsung opened on Aug 27, 2026

• Add efficient single-layer UCJ energy

  qiskit-community/ffsim#683 · Filter by author kevinsung opened on Jul 27, 2026
  2

  

• Number of Givens rotations does not decrease monotonically with increased tolerance

  qiskit-community/ffsim#672 · Filter by author kevinsung opened on Jul 14, 2026

• Serialization of dataclasses

  qiskit-community/ffsim#628 · Filter by author kevinsung opened on Apr 2, 2026

• Regularization spikes in the linear method

  qiskit-community/ffsim#552 · Filter by author davidomanovic opened on Feb 11, 2026
  7

• Contraction-based linear operator for unrestricted UCCSD

  needs upstream change
  qiskit-community/ffsim#549 · Filter by author kevinsung opened on Feb 10, 2026

• use deploy-pages action for documentation

  qiskit-community/ffsim#509 · Filter by author kevinsung opened on Nov 24, 2025

• Add how-to guide on orbital optimization

  documentation
  qiskit-community/ffsim#471 · Filter by author kevinsung opened on Sep 16, 2025
  2

  

• Add title and description to metadata of notebooks

  documentation
  qiskit-community/ffsim#468 · Filter by author kevinsung opened on Sep 16, 2025
  

• Add complex-valued unrestricted UCCSD ansatz

  qiskit-community/ffsim#461 · Filter by author kevinsung opened on Sep 12, 2025

• Add LUCJ ansatz as parameterized Qiskit circuit

  qiskit-community/ffsim#411 · Filter by author kevinsung opened on Jun 15, 2025

• Support spinless Jordan-Wigner transformation

  qiskit-community/ffsim#408 · Filter by author kevinsung opened on Jun 13, 2025
  5

• Implement other protocols for SingleFactorizedHamiltonian

  qiskit-community/ffsim#406 · Filter by author kevinsung opened on Jun 5, 2025

• Support greater than 63 orbitals

  qiskit-community/ffsim#384 · Filter by author kevinsung opened on Apr 4, 2025

• Make API docs source links go to GitHub

  documentation
  qiskit-community/ffsim#360 · Filter by author kevinsung opened on Feb 5, 2025

• Generate PyO3 stub files automatically?

  rust
  qiskit-community/ffsim#359 · Filter by author kevinsung opened on Feb 3, 2025

• Feature Request: Custom Excitation List

  qiskit-community/ffsim#311 · Filter by author osamarais opened on Aug 22, 2024
  1

• Allow configuring custom BLAS

  qiskit-community/ffsim#291 · Filter by author kevinsung opened on Jul 17, 2024

• Make functions accept StateVector in addition to Numpy array

  qiskit-community/ffsim#253 · Filter by author kevinsung opened on Jun 23, 2024
  2

• Support noisy simulations

  help wantedneeds discussion
  qiskit-community/ffsim#244 · Filter by author kevinsung opened on Jun 20, 2024

• Validation for dataclasses

  qiskit-community/ffsim#240 · Filter by author kevinsung opened on Jun 8, 2024

• GivensAnsatzOp from and to orbital rotations should respect real-valuedness

  qiskit-community/ffsim#239 · Filter by author kevinsung opened on Jun 8, 2024

• Move DropNegligible transpiler pass to qiskit

  qiskit-community/ffsim#231 · Filter by author kevinsung opened on Jun 2, 2024
  1

• Parallelize Rust function apply_phase_shift_in_place

  rust
  qiskit-community/ffsim#230 · Filter by author kevinsung opened on Jun 2, 2024 · v0.1
  6

• Import SamplerPub directly from qiskit.primitives

  needs upstream change
  qiskit-community/ffsim#227 · Filter by author kevinsung opened on Jun 2, 2024