Quantinuum Systems API Options¶

Quantinuum Systems API options can be used to control server-side compiler behaviour. These options are specified upon instantiation of qnexus.QuantinuumConfig.

Compiler Options¶

The API option is specifed in bold, followed by a description of the option and allowed values.

API Options	Description	Default Values	Allowed Values
no-reduce	turns off all TKET optimizations, all hardware compiler gate combination logic, and requires exact 1:1 correspondence of two-qubit gates with gates on the system. This requires the circuit be submitted using one of the native two-qubit gates on the system, otherwise an error will be returned	True	Boolean
no-opt	turns off all TKET optimizations and all hardware compiler gate combination logic. If more than 1 native gate is used in the circuit, the circuit will be rebased to 1 native gate, but no further gate combination logic will occur. The job will fail if no-opt is set to True and the circuit contains non-native gates.	True	Boolean
TKET-opt-level	the TKET optimization level to apply, with TKET optimizations turned on, the hardware compiler will provide further gate combination logic as makes sense for ions and transport	2	0, 1, 2, None
no-qir-convert	Uses the legacy QASM compilation flow for programs, without converting QASM programs to QIR. Accepts Boolean argument.	False	Boolean

Usage¶

The class quantinuum_schemas.models.backend_config.QuantinuumCompilerOptions accepts a dictionary of compiler options. Each compiler option

from quantinuum_schemas.models.backend_config import QuantinuumCompilerOptions

compiler_options = QuantinuumCompilerOptions({
    "no-opt": True,
    "no-reduce": True,
    "no-qir-convert": False,
    "tket-opt-level": False
})

import qnexus as qnx

qntm_config = qnx.QuantinuumConfig(
    device_name="H1-1E",
    compiler_options=compiler_options
)

Emulator Options¶

An overview of Emulator API options is provided in the emulator user guide. Usage is demonstrated here.