Skip to main content
Released on 2024-10-14.

​
Upgrade Instructions

​
Enhancements

  1. Introducing generative functions to the Python SDK. Generative functions are @qfuncs that support Python control flow, integration with third-party libraries, and debugging.
  2. Execution using IBM devices is available again.
  3. New method estimation_cost in ExecutionSession evaluates a quantum circuit given a classical cost function.
  4. A new += operator performs

in-place addition

 of quantum numerics.
Example: z += x ** 2 - 0.5 * y 5. The state of SampledState supports dot-notation for field access when representing a quantum struct: 
struct_sample = sample.state["my_qstruct"]
field_sample = struct_sample.my_field

​
Library Additions

  1. Add two new functions for encoding classical data, encode_in_angle and encode_on_bloch. See notebook.
  2. Add a new example for hybrid classical-quantum neural network. See notebook.

​
Interface Changes

  1. Parameter control of built-in functions such as CX has been renamed to ctrl. Parameter control will no longer be supported starting on 4/11/24 at the earliest.

​
Bug Fixes

  1. Fix classical array slicing in the SDK (my_list[1:3][0]).
  2. Fix synthesis of arithmetic operations nested in a within-apply statement when machine_precision is set.
  3. Fix in-place arithmetic operations (^=/+=) when the value on the right-hand side is a signed variable that is not aligned with the target variable.