bloqade.lanes.arch.build.topology.TransversalSiteTopology

← Module overview

classTransversalSiteTopology¶source

bloqade.lanes.arch.build.topology.TransversalSiteTopology

Physical site topology derived from a logical site topology via code expansion.

Signature

class TransversalSiteTopology(logical_topology: SiteTopology, code_distance: int, intra_group_topology: SiteTopology | None = None)

Public import paths

• from bloqade.lanes.arch import TransversalSiteTopology
• from bloqade.lanes.arch.build import TransversalSiteTopology

Sites are organized in groups of code_distance. Group g contains physical sites [g*d, g*d+1, ..., g*d+d-1] where d = code_distance.

Produces two kinds of buses (transversal buses first so that logical bus IDs are preserved):

1. Transversal buses — each logical bus is “inflated” so that every (src, dst) element becomes d parallel physical elements. Logical bus B becomes physical bus B with the same index.

2. Intra-group buses (optional) — generated by intra_group_topology for d sites, then replicated and offset for each group. These support non-transversal operations within a code word (e.g. Steane code initialisation, syndrome extraction).

Parameters

Name	Type	Default	Description
logical_topology	SiteTopology	required
code_distance	int	required
intra_group_topology	SiteTopology | None	None

Attributes

Name	Type	Default	Description
logical_topology	SiteTopology	required
code_distance	int	required
intra_group_topology	SiteTopology | None	None

methodgenerate_site_buses¶source

bloqade.lanes.arch.build.topology.TransversalSiteTopology.generate_site_buses

def generate_site_buses(num_sites: int) -> tuple[SiteBus, ...]

Parameters

Name	Type	Description
num_sites	int

Returns

tuple[SiteBus, ...]

source