What Types of Hybrid Solvers Are Available?

The hybrid solver service (HSS) in the Leap™ service provides access to cloud-based quantum-classical hybrid solvers. These hybrid solvers, which implement state-of-the art classical algorithms together with intelligent allocation of the quantum processing unit (QPU) to parts of the problem where it benefits most, are designed to accommodate even very large problems.

Leap currently has hybrid solvers that accept the following problem forms:

  • Binary quadratic model (BQM): Problems with binary variables {0,1} or {-1,+1}.
  • Discrete quadratic model (DQM):  Problems with variables that represent a set of values such as
    {red, green, blue, yellow} or {3.2, 67}.
  • Constrained quadratic model (CQM): Problems with any combination of binary, integer, and real (that is, continuous) variables and with one or more constraints.
  • Nonlinear model: Problems with either or both integer and binary variables and with one or more constraints.

Submit problems to the hybrid solvers via the Ocean™ SDK using the dwave-system tool's LeapHybridBQMSampler,  LeapHybridDQMSampler, LeapHybridCQMSampler, LeapHybridNLSampler. See the Ocean™ documentation for more information.

 

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