Issues

• Support Python 3.15

  needs upstream change
  Qiskit/ffsim#746 · Filter by author kevinsung opened on Oct 24, 2026

• Add guide for computing RDMs

  documentation
  Qiskit/ffsim#724 · Filter by author kevinsung opened on Oct 11, 2026

• Redundancy in UCJ operator parameterization

  Qiskit/ffsim#702 · Filter by author kevinsung opened on Aug 27, 2026

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

  Qiskit/ffsim#672 · Filter by author kevinsung opened on Jul 14, 2026

• Serialization of dataclasses

  Qiskit/ffsim#628 · Filter by author kevinsung opened on Apr 2, 2026

• Regularization spikes in the linear method

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

• Contraction-based linear operator for unrestricted UCCSD

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

• use deploy-pages action for documentation

  Qiskit/ffsim#509 · Filter by author kevinsung opened on Nov 24, 2025

• Add title and description to metadata of notebooks

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

• Add LUCJ ansatz as parameterized Qiskit circuit

  Qiskit/ffsim#411 · Filter by author kevinsung opened on Jun 15, 2025

• Support spinless Jordan-Wigner transformation

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

• Support greater than 63 orbitals

  Qiskit/ffsim#384 · Filter by author kevinsung opened on Apr 4, 2025

• Make API docs source links go to GitHub

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

• Generate PyO3 stub files automatically?

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

• Feature Request: Custom Excitation List

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

• Make functions accept StateVector in addition to Numpy array

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

• Support noisy simulations

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

• Validation for dataclasses

  Qiskit/ffsim#240 · Filter by author kevinsung opened on Jun 8, 2024

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

  Qiskit/ffsim#239 · Filter by author kevinsung opened on Jun 8, 2024

• Move DropNegligible transpiler pass to qiskit

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

• Parallelize Rust function apply_phase_shift_in_place

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

• Import SamplerPub directly from qiskit.primitives

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

• add specialized code for spinless diag Coulomb

  Qiskit/ffsim#213 · Filter by author kevinsung opened on Jun 1, 2024

• Implement givens_decomposition in Rust

  linalgperformancerust
  Qiskit/ffsim#197 · Filter by author kevinsung opened on May 26, 2024

• don't pass conjugates separately in apply_diag_coulomb_evolution_in_place_z_rep

  Qiskit/ffsim#196 · Filter by author kevinsung opened on May 26, 2024