Upgrade Instructions
- [Python SDK](../classiq_101/registration_installations.md/platform-version-updates)
- The IDE upgrades automatically.
Bug Fixes
1. Fixed a bug related to nested control operations.
2. Fixed a bug related to boolean arithmetic expressions with invert.
3. Fixed a bug related to arithmetic expressions inside within-apply.
IDE
1. Add back improved circuit nodes search.
2. Fix bug in Quantum Program page .qprog file extensions uploads.
3. New Quantum Program export option: Quantum programs can now be exported as .qprog files.
4. Poll all active jobs in the job list, not just the selected job.
5. Add support for Alice & Bob hardware configurations in the IDE.
6. Add support for QCtrl API key configuration in IBM hardware settings.
Enhancements
<!-- cspell:ignore structs -->
1. Add support for arithmetic boolean expressions as conditionals for control statements;
see [here](../../reference-manual/qmod/language-reference/statements/control/).
2. Add quantum structs.
3. The element type of quantum arrays can be any quantum type. N-dimensional quantum arrays are supported.
4. Operand parameter names are optional in both Native
(`qfunc (indicator: qbit)` -> `qfunc (qbit)`) and Python
(`QCallable[QBit]` -> `QCallable[Annotated[QBit, "indicator"]]`) Qmod.
5. Improve error messages.
6. Provide better circuits for certain boolean arithmetic expressions.
7. Improved qubit reuse and runtime performance for model without constraints.
8. Add `solovay_kitaev_max_iterations` field to the synthesis preferences,
allowing for tuning the accuracy of the Solovay-Kitaev algorithm.
9. Built-in classical functions to decompose/compose a matrix into/from a Hamiltonian. Example of usage:
=== "SDK"
[comment]: DO_NOT_TEST
python
mat = np.array([[0, 1, 2, 3], [1, 4, 5, 6], [2, 5, 7, 8], [3, 6, 8, 9]])
hamiltonian = matrix_to_hamiltonian(mat)
mat = hamiltonian_to_matrix(hamiltonian)
10. parsed_states, parsed_counts, parsed_state_vector will contain the parsed execution details as lists if a quantum array was used in the model.
=== "SDK"
[comment]: DO_NOT_TEST
python
qfunc
def main(qna: Output[QArray[QNum[3, True, 0]]]) -> None:
allocate(6, qna)
hadamard_transform(qna)
qp = synthesize(create_model(main))
res = execute(qp).result()
print(res[0].value.parsed_counts[0])
previously this would print -> state={'qna': 43} shots=27
now it prints -> state={'qna': [-2, 3]} shots=27
Library and Documentation
1. A new tutorial on Hamiltonian simulation for block-encoded Hamiltonians, using QSVT and Qubitization, was added to
the library; see [here](../../explore/tutorials/hamiltonian_simulation/hamiltonian_simulation_with_block_encoding/hamiltonian_simulation_with_block_encoding/).
2. A new tutorial on solving the discrete Poisson's equation using the HHL algorithm, combined with quantum sine and
cosine transforms, was added to the library;
see [here](../../explore/algorithms/differential_equations/discrete_poisson_solver/discrete_poisson_solver/).
3. New state preparation functions - `prepare_unifrom_trimmed_state`, `prepare_unifrom_interval_state`, see [here](../../explore/functions/qmod_library_reference/classiq_open_library/special_state_preparations/prepare_partial_uniform_state/).
4. Enhanced the Discrete logarithm example to the case where the order is not power of 2, see [here](../../explore/algorithms/algebraic/discrete_log/discrete_log/).
5. Updated the [Quantum Types](https://docs.classiq.io/latest/reference-manual/platform/qmod/language-reference/quantum-types/) documentation page.
Interface Changes
1. Some builtin operations parameters have been renamed:
- `control(ctrl=..., operand=...)` => `control(ctrl=..., stmt_block=...)`
- `within_apply(compute=..., action=...)` => `within_apply(within=..., apply=...)`
- `power(power=..., operand=...)` => `power(exponent=..., stmt_block=...)`
- `invert(operand=)` => `invert(stmt_block=...)`
Deprecations
1. SDK: The `struct` decorator has been removed. Define classical structs
using `dataclass`.
2. The field `variance` in `EstimationResult` is deprecated, and will be
populated with the value `-1` until removed.
3. The field `timeout_sec` in `ExecutionPreferences`, and the field
`job_timeout` in `AwsBackendPreferences`, have been removed.
4. classical arguments in the native language are now inside the parentheses
section (`(...)`) alongside quantum variables
and not inside the angle brackets (`<...>`), the angle brackets section is
now considered deprecated.
For example, you should
migrate: `qfunc <a: real> main{...}` -> `qfunc main(a: real) {...}`
for info refer to the language reference about functions.
A Warning was added to the IDE in the case it is used.