Issues

• cudaq.evolve on qpp-cpu / density-matrix-cpu returns a non-normalized state for large schedule steps

  NVIDIA/cuda-quantum#5891 · Filter by author 0z5a opened on Nov 11, 2026

• Ask the ServerHelper for fresh headers on every poll in Future::get, as is done for cookies

  enhancement
  NVIDIA/cuda-quantum#5886 · Filter by author brunopacheco1 opened on Nov 10, 2026

• Add one pipeline for Quake-to-QLX conversion

  NVIDIA/cuda-quantum#5885 · Filter by author sacpis opened on Nov 10, 2026
  

• Build QuakeToQLX only when the CUDA-Q SDK is enabled

  NVIDIA/cuda-quantum#5884 · Filter by author sacpis opened on Nov 10, 2026
  

• Check P0 linearity in C++, not only in Python

  NVIDIA/cuda-quantum#5883 · Filter by author sacpis opened on Nov 10, 2026
  

• After qubit-mapping, regtomem renumbers the device qubits and a ServerHelper cannot get them back

  NVIDIA/cuda-quantum#5882 · Filter by author brunopacheco1 opened on Nov 10, 2026

• [docs] Shor's tutorial: test_order computes gcd(r ± 1, N) instead of gcd(a^(r/2) ± 1, N)

  NVIDIA/cuda-quantum#5837 · Filter by author silicofellerquantum opened on Nov 3, 2026
  2

• qubit-mapping produces invalid IR when routing inside a cc.loop or cc.if swaps through a qubit the region does not carry

  stale-notified
  NVIDIA/cuda-quantum#5792 · Filter by author taalexander opened on Oct 30, 2026
  5

  

• Compile time grows superlinearly with the number of calls inlined into a kernel

  performancestale-notified
  NVIDIA/cuda-quantum#5789 · Filter by author taalexander opened on Oct 30, 2026
  2

• C++ std::vector<bool> kernel arguments are read wrong when the target substitutes arguments

  stale-notified
  NVIDIA/cuda-quantum#5783 · Filter by author taalexander opened on Oct 29, 2026
  1

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

  stale-notified
  NVIDIA/cuda-quantum#5730 · Filter by author iarjunganesh opened on Oct 26, 2026
  2

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

  stale-notified
  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)

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

• Make exact-angle matching consistent across the compiler

  enhancementstale-notified
  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

  stale-notified
  NVIDIA/cuda-quantum#5679 · Filter by author v0ropaev opened on Oct 21, 2026
  2

• 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

• 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 logicalExalate
  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