Emulation configuration

More experienced users might want to fully configure an emulator to exploit all its possibilities, such as defining which observables to measure during the emulation, or emulating real hardware modulation effects. This is done through the EmulationConfig object.

from qoolqit import Drive, Ramp, Register, Constant
from qoolqit import QuantumProgram
from qoolqit import MockDevice

register = Register.from_coordinates([(0,1), (0,-1), (2,0)])
omega = 0.8
delta_i = -2.0 * omega
delta_f = -delta_i
T = 25.0
wf_amp = Constant(T, omega)
wf_det = Ramp(T, delta_i, delta_f)
drive = Drive(amplitude = wf_amp, detuning = wf_det)
program = QuantumProgram(register, drive)
device = MockDevice()
program.compile_to(device)

from qoolqit.execution import EmulationConfig, LocalEmulator, Occupation

observables = (Occupation(evaluation_times=[0.1, 0.5, 1.0]),)
emulation_config = EmulationConfig(
    observables=observables,
    with_modulation=True
    )

The configuration is then passed to the emulator at instantiation:

emulator = LocalEmulator(emulation_config=emulation_config)

The key parameters of EmulationConfig are:

Parameter	Description
observables	Sequence of observables to compute during emulation.
default_evaluation_times	Default relative times (between 0 and 1) at which observables are evaluated, or "Full" for every emulation step. Defaults to (1.0,) (end of simulation only).
with_modulation	Whether to emulate finite-bandwidth hardware modulation of the drive.
initial_state	Custom initial state (defaults to all qubits in the ground state).
noise_model	Optional noise model to apply during emulation.

Note

Dedicated and specific configuration subclasses for each backend also exist: QutipConfig, SVConfig, MPSConfig. They should be used by pairing them with the corresponding backend type and imported from their respective packages, namely pulser-simulation, emu-sv and emu-mps. For more information about configuration options, please refer to the Pulser documentation (external).