def draw_readout_launch(chip, mpr_params, qubit_params):
N = qubit_params['num_qubits']
Qn = chip.get_component(f'Q{N - 1:02d}')
mpr_params['hero_bond.x'] = Qn.node('pad1_bottom')[0]
launch = qlib.Launch(cpw=mpr_params['cpw'], **mpr_params['readout_launch'])
keys = ['cpw', 'hero_bond', 'shift_x_position', 'radius']
rline_params = Params(
{k: v for k, v in mpr_params.items() if k in keys}
)
bus = chip.get_component('BUS')
# Compute the launch x position
launch_x = chip.extent()[0, 1] - mpr_params['launch_x_offset']
readout_line = ReadoutLine(
start=bus.node('IDC.cpw1'),
launch=launch,
launch_position=np.array((launch_x, mpr_params['launch_y'])),
**rline_params
).place()
chip.add_component(readout_line, cid='BUSLINE', layers=mpr_params['layer'])
def draw_control_lines(chip, control_params):
cpw = control_params['cpw']
N = control_params['num_ctrl_lines_per_side'] * 2
## Creating the launch component
launch = qlib.Launch(cpw=cpw,
taper_length=control_params['bondpad'].pop('taper'),
bondpad=control_params['bondpad'])
## Compute control line ys
control_line_ys = np.linspace(
control_params['ctrl_line_y_start'], control_params['ctrl_line_y_end'],
control_params['num_ctrl_lines_per_side'] + 1)
## Compute intersection position
intersection = (control_params['intersection_start_x'] +
control_params['intersection_end_x']) / 2
## Reorder by Qubit ID (0 indexed, clockwise, starting from lower left)
control_line_ys = np.concatenate(
[control_line_ys[:-1], control_line_ys[1:][::-1]])
x_left = chip.extent()[0][0] + control_params['ctrl_line_x_offset']
x_right = chip.extent()[0][1] - control_params['ctrl_line_x_offset']
## Make ControlLines and add to chip
for i, y in enumerate(control_line_ys):
rotation, sign, x = (0, -1, x_left) if i < N // 2 else (180, 1,
x_right)
qb = chip.get_component(f'Q{i:02d}')
start = np.array((x, y))
end = qb.node('cutout_left') + (sign *
control_params['qubit_separation'], 0)
ctrl_line = ControlLine(cpw, launch, start, end, intersection,
rotation).place()
chip.add_component(ctrl_line,
cid=f'CONTROLLINE{i:02d}',
layers=control_params['layer'])