Source code for kqcircuits.elements.fluxlines.fluxline

# This code is part of KQCircuits
# Copyright (C) 2021 IQM Finland Oy
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from kqcircuits.pya_resolver import pya
from kqcircuits.util.parameters import Param, pdt
from kqcircuits.elements.element import Element
from kqcircuits.defaults import default_fluxline_type
from kqcircuits.elements.fluxlines import fluxline_type_choices

[docs] class Fluxline(Element): """Base class for fluxline objects without actual produce function.""" default_type = default_fluxline_type fluxline_type = Param(pdt.TypeString, "Fluxline Type", default_type, choices=fluxline_type_choices) fluxline_width = Param(pdt.TypeDouble, "Fluxline width", 18, unit="μm") fluxline_gap_width = Param(pdt.TypeDouble, "Fluxline gap width", 2, unit="μm") fluxline_parameters = Param(pdt.TypeString, "Extra Fluxline Parameters", "{}") _fluxline_parameters = Param(pdt.TypeString, "Previous state of *_parameters", "{}", hidden=True)
[docs] @classmethod def create(cls, layout, library=None, fluxline_type=None, **parameters): """Create a Fluxline cell in layout.""" return cls.create_subtype(layout, library, fluxline_type, **parameters)[0]
[docs] def coerce_parameters_impl(self): self.sync_parameters(Fluxline)
def _insert_fluxline_shapes(self, left_gap, right_gap): """Inserts the gap shapes to the cell. Protection layer is added based on their bounding box. Arg: left_gap (DPolygon): polygon for the left gap right_gap (DPolygon): polygon for the right gap """ # transfer to qubit coordinates self.cell.shapes(self.get_layer("base_metal_gap_wo_grid")).insert(left_gap) self.cell.shapes(self.get_layer("base_metal_gap_wo_grid")).insert(right_gap) # protection protection = ( pya.Region([p.to_itype(self.layout.dbu) for p in [right_gap, left_gap]]) .bbox() .enlarged(self.margin / self.layout.dbu, self.margin / self.layout.dbu) ) self.add_protection(pya.Polygon(protection)) def _add_fluxline_refpoints(self, port_ref): """Adds refpoints for "port_flux" and "port_flux_corner". Arg: port_ref (DPoint): position of "port_flux" in fluxline coordinates """ self.refpoints["origin_fluxline"] = pya.DPoint(0, 0) self.add_port("flux", port_ref, pya.DVector(0, -1))