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Quasar

Quasar is a hardware-aware quantum compiler for star-topology architectures, with a focus on central-spin platforms such as NV centers in diamond. It compiles quantum circuits into native gate sequences and optimized pulse sequences for quantum computing and quantum sensing.

Key features

  • Architecture-aware gate synthesis for star-topology connectivity, with a high-performance C++ backend.
  • Two complementary synthesis strategies: Adaptive (bottom-up) and Tree Search (top-down).
  • Error-aware compilation that finds the optimal trade-off between circuit depth and gate errors.
  • Pulse-level compilation for NV-center devices, with simulator (Simphony) and hardware backends.
  • Qiskit-compatible input and output.

Why Quasar?

  • Fewer two-qubit gates than general-purpose compilers such as Qiskit and BQSKit.
  • Output matched to hardware connectivity and asymmetric native gate costs.
  • Reduced error accumulation and improved expected execution fidelity.