Issues

• [python] observe per-call noise leaks after argument errors and clears existing global noise

  NVIDIA/cuda-quantum#5730 · Filter by author iarjunganesh opened on Oct 26, 2026
  1

• Python build succeeds with ensmallen/NLopt disabled, but import cudaq fails with undefined optimizer symbols

  NVIDIA/cuda-quantum#5717 · Filter by author iarjunganesh opened on Oct 23, 2026
  2

• cudaq.State.from_data silently misreads non-contiguous NumPy arrays (strides ignored on the host path)

  NVIDIA/cuda-quantum#5702 · Filter by author wsttiger opened on Oct 23, 2026
  2

• "No QPUs are available for this target" after the thread that first used CUDA-Q exits

  bug
  NVIDIA/cuda-quantum#5689 · Filter by author ikkoham opened on Oct 22, 2026
  1

• Make exact-angle matching consistent across the compiler

  enhancement
  NVIDIA/cuda-quantum#5680 · Filter by author taalexander opened on Oct 21, 2026

• cudaq.observe with a list of multi-term operators drops term coefficients, and fails when arguments are broadcast

  NVIDIA/cuda-quantum#5679 · Filter by author v0ropaev opened on Oct 21, 2026
  1

• Inconsistent handling of YAML-defined compilation options

  stale-notified
  NVIDIA/cuda-quantum#5657 · Filter by author lmondada opened on Oct 18, 2026

• [python] Single-target custom operations do not broadcast over a qvector

  stale-notified
  NVIDIA/cuda-quantum#5646 · Filter by author jersonboydmilan opened on Oct 17, 2026

• The preview/logical header files have a different style

  cuda-q logicalstale-notified
  NVIDIA/cuda-quantum#5643 · Filter by author schweitzpgi opened on Oct 16, 2026
  

• Changing the headers in all the C++ tests is not simply about performance

  languagestale-notified
  NVIDIA/cuda-quantum#5636 · Filter by author schweitzpgi opened on Oct 16, 2026

• Consider restructuring cuda/lib/Target subdirectory tree

  stale-notified
  NVIDIA/cuda-quantum#5628 · Filter by author schweitzpgi opened on Oct 15, 2026

• cudaq.logical.compiler.import_cudaq fails for Callable kernel arguments (PyKernelDecorator.decorator)

  stale-notified
  NVIDIA/cuda-quantum#5613 · Filter by author zohimchandani opened on Oct 13, 2026

• Torch integrators fail with "maximum not implemented for complex tensors" when the RHS is zero at t0

  Exalatestale-notified
  NVIDIA/cuda-quantum#5599 · Filter by author mitchdz opened on Oct 9, 2026
  1

• tensornet-mps fp64: asymmetric Kraus channel aborts with zero norm in sample and observe (0.16.0)

  stale-notified
  NVIDIA/cuda-quantum#5594 · Filter by author sanketsharma opened on Oct 9, 2026
  4

• [cudaq-logical] IR Improvements

  cuda-q logicalstale-notified
  Enhancement

  NVIDIA/cuda-quantum#5572 · Filter by author amccaskey opened on Oct 7, 2026
  2

  

• [cudaq-logical] Sync with internal early access release and arxiv paper evals

  cuda-q logicalExalatestale-notified
  Enhancement

  NVIDIA/cuda-quantum#5571 · Filter by author amccaskey opened on Oct 7, 2026
  2

  

• dfJump variable not initialized before first use in pass UnwindByDataFlow

  stale-notified
  NVIDIA/cuda-quantum#5539 · Filter by author totoschnell opened on Oct 4, 2026
  2

• Broadcast sample replaces a scalar argument with zero

  stale-notified
  NVIDIA/cuda-quantum#5518 · Filter by author SashaMIT opened on Sep 30, 2026
  1

• expected minimum latency with GB10

  stale-notified
  NVIDIA/cuda-quantum#5497 · Filter by author mionica-e1 opened on Sep 28, 2026
  4

• [Docs] Fix typo in Sphinx extensions description

  stale-notified
  NVIDIA/cuda-quantum#5492 · Filter by author LestlinRobins opened on Sep 24, 2026
  2

• [python] Crash when cudaq.adjoint is followed by cudaq.control on the same kernel with a constant argument

  stale-notified
  NVIDIA/cuda-quantum#5490 · Filter by author iarjunganesh opened on Sep 24, 2026
  5

• Memory leak during large scale VQE: uccsd() and molecular Hamiltonian in cudaq.observe()

  stale-notified
  NVIDIA/cuda-quantum#5465 · Filter by author TempRep940 opened on Sep 22, 2026
  4

  

• PyKernel.__call__ validates a runtime list argument's length against the wrong quantity

  stale-notified
  NVIDIA/cuda-quantum#5424 · Filter by author udsy19 opened on Sep 14, 2026
  5

• subveq at a call site is not converted to linear values

  stale-notified
  NVIDIA/cuda-quantum#5400 · Filter by author sacpis opened on Sep 9, 2026
  

• Factory is overly general

  stale-notified
  NVIDIA/cuda-quantum#5399 · Filter by author atgeller opened on Sep 9, 2026