Spec

ArchSpec

ArchSpec(inner: ArchSpec)

Bases: RustWrapper[ArchSpec]

              flowchart TD
              bloqade.lanes.arch.spec.ArchSpec[ArchSpec]
              bloqade.lanes.bytecode._wrapper.RustWrapper[RustWrapper]

                              bloqade.lanes.bytecode._wrapper.RustWrapper --> bloqade.lanes.arch.spec.ArchSpec
                


              click bloqade.lanes.arch.spec.ArchSpec href "" "bloqade.lanes.arch.spec.ArchSpec"
              click bloqade.lanes.bytecode._wrapper.RustWrapper href "" "bloqade.lanes.bytecode._wrapper.RustWrapper"
            

Architecture specification for a quantum device.

Source code in .venv/lib/python3.12/site-packages/bloqade/lanes/arch/spec.py

def __init__(self, inner: _RustArchSpec):
    self._inner = inner
    self._inner.validate()

atom_reloading property

atom_reloading: bool

Whether the device supports reloading atoms after initial fill.

blockade_radius property

blockade_radius: float | None

Rydberg blockade radius (µm), or None if not provided.

This is metadata — when present, it indicates the radius associated with the architecture and is typically used to interpret the entangling pairs. It is not independently verified at the ArchSpec level; use :meth:ZoneBuilder.set_blockade_radius / :meth:ArchBuilder.set_blockade_radius if you want the pair list to be derived from and checked against a radius.

cz_zone_addresses cached property

cz_zone_addresses: frozenset[ZoneAddress]

Zones that host CZ entangling operations (have entangling_pairs).

feed_forward property

feed_forward: bool

Whether the device supports mid-circuit measurement with classical feedback.

home_sites cached property

home_sites: frozenset[LocationAddress]

All home LocationAddresses with correct zone_id per word.

A home site is (zone_id, word_id, site_id) where word_id is a home word (lower word_id in each entangling pair, or unpaired) and zone_id is the zone that word belongs to.

max_qubits property

max_qubits: int

Get the maximum number of qubits supported by this architecture.

paths cached property

paths: MappingProxyType[
    LaneAddress, tuple[tuple[float, float], ...]
]

Transport path waypoints keyed by LaneAddress.

Derived from the Rust ArchSpec.paths on first access.

site_buses cached property

site_buses: tuple[SiteBus, ...]

Aggregate all site buses across all zones.

Note: indices in this flat list do NOT correspond to per-zone bus_id values in LaneAddress. Prefer iterating zones directly via self.zones[i].site_buses.

sites_per_word property

sites_per_word: int

Get the number of sites per word.

word_buses cached property

word_buses: tuple[WordBus, ...]

Aggregate all word buses across all zones.

Note: indices in this flat list do NOT correspond to per-zone bus_id values in LaneAddress. Prefer iterating zones directly via self.zones[i].word_buses.

word_zone_map cached property

word_zone_map: dict[int, int]

Map each word_id to the zone_id it belongs to.

Delegates to Rust ArchSpec.word_zone_map().

words cached property

words: tuple[Word, ...]

Python Word wrappers, derived from the Rust ArchSpec.

check_lane_group

check_lane_group(
    lanes: Sequence[LaneAddress],
) -> Sequence[LaneGroupError]

Validate a group of lane addresses via Rust.

Checks individual lane validity, group consistency (direction, bus_id, move_type), bus membership, and AOD geometry constraints. Returns a list of LaneGroupError exceptions (empty if all valid).

Source code in .venv/lib/python3.12/site-packages/bloqade/lanes/arch/spec.py

def check_lane_group(
    self, lanes: Sequence[LaneAddress]
) -> Sequence[LaneGroupError]:
    """Validate a group of lane addresses via Rust.

    Checks individual lane validity, group consistency (direction, bus_id,
    move_type), bus membership, and AOD geometry constraints.
    Returns a list of LaneGroupError exceptions (empty if all valid).
    """
    rust_addrs = [lane._inner for lane in lanes]
    return self._inner.check_lanes(rust_addrs)

check_location_group

check_location_group(
    locations: Sequence[LocationAddress],
) -> Sequence[LocationGroupError]

Validate a group of location addresses via Rust.

Returns a list of LocationGroupError exceptions (empty if all valid).

Source code in .venv/lib/python3.12/site-packages/bloqade/lanes/arch/spec.py

def check_location_group(
    self, locations: Sequence[LocationAddress]
) -> Sequence[LocationGroupError]:
    """Validate a group of location addresses via Rust.

    Returns a list of LocationGroupError exceptions (empty if all valid).
    """
    rust_addrs = [loc._inner for loc in locations]
    return self._inner.check_locations(rust_addrs)

from_components classmethod

from_components(
    words: tuple[Word, ...],
    zones: tuple[Zone, ...],
    modes: Sequence[Mode],
    zone_buses: Sequence[ZoneBus] = (),
    paths: (
        dict[LaneAddress, tuple[tuple[float, float], ...]]
        | None
    ) = None,
    feed_forward: bool = False,
    atom_reloading: bool = False,
    blockade_radius: float | None = None,
) -> ArchSpec

Construct an ArchSpec from Python component types.

Source code in .venv/lib/python3.12/site-packages/bloqade/lanes/arch/spec.py

@classmethod
def from_components(
    cls,
    words: tuple[Word, ...],
    zones: tuple[_RustZone, ...],
    modes: Sequence[_RustMode],
    zone_buses: Sequence[ZoneBus] = (),
    paths: dict[LaneAddress, tuple[tuple[float, float], ...]] | None = None,
    feed_forward: bool = False,
    atom_reloading: bool = False,
    blockade_radius: float | None = None,
) -> ArchSpec:
    """Construct an ArchSpec from Python component types."""

    rust_paths = None
    if paths:
        rust_paths = [
            _RustTransportPath(
                lane=_RustLaneAddress(
                    lane.move_type,
                    lane.zone_id,
                    lane.word_id,
                    lane.site_id,
                    lane.bus_id,
                    lane.direction,
                ),
                waypoints=list(waypoints),
            )
            for lane, waypoints in paths.items()
        ]

    inner = _RustArchSpec(
        version=(2, 0),
        words=[w._inner for w in words],
        zones=list(zones),
        zone_buses=list(zone_buses),
        modes=list(modes),
        paths=rust_paths,
        feed_forward=feed_forward,
        atom_reloading=atom_reloading,
        blockade_radius=blockade_radius,
    )
    return cls(inner)

get_cz_partner

get_cz_partner(
    location: LocationAddress,
) -> LocationAddress | None

Get the CZ partner for a given location.

Uses Rust-side get_cz_partner which resolves via the zone's entangling_pairs.

Source code in .venv/lib/python3.12/site-packages/bloqade/lanes/arch/spec.py

def get_cz_partner(self, location: LocationAddress) -> LocationAddress | None:
    """Get the CZ partner for a given location.

    Uses Rust-side get_cz_partner which resolves via the zone's
    entangling_pairs.
    """
    result = self._inner.get_cz_partner(location._inner)
    if result is None:
        return None
    return LocationAddress.from_inner(result)

get_lane_address

get_lane_address(
    src: LocationAddress, dst: LocationAddress
) -> LaneAddress | None

Given an input tuple of locations, gets the lane (w/direction).

Delegates to Rust ArchSpec.lane_for_endpoints().

Source code in .venv/lib/python3.12/site-packages/bloqade/lanes/arch/spec.py

def get_lane_address(
    self, src: LocationAddress, dst: LocationAddress
) -> LaneAddress | None:
    """Given an input tuple of locations, gets the lane (w/direction).

    Delegates to Rust ``ArchSpec.lane_for_endpoints()``.
    """
    result = self._inner.lane_for_endpoints(src._inner, dst._inner)
    if result is None:
        return None
    return LaneAddress.from_inner(result)

get_zone_index

get_zone_index(
    loc_addr: LocationAddress, zone_id: ZoneAddress
) -> int | None

O(1) flat index of a location within a zone.

Delegates to Rust ArchSpec.zone_location_index().

Source code in .venv/lib/python3.12/site-packages/bloqade/lanes/arch/spec.py

def get_zone_index(
    self,
    loc_addr: LocationAddress,
    zone_id: ZoneAddress,
) -> int | None:
    """O(1) flat index of a location within a zone.

    Delegates to Rust ``ArchSpec.zone_location_index()``.
    """
    return self._inner.zone_location_index(loc_addr._inner, zone_id.zone_id)

is_home_position

is_home_position(addr: LocationAddress) -> bool

True if this address is at a home (non-CZ-staging) word.

Source code in .venv/lib/python3.12/site-packages/bloqade/lanes/arch/spec.py

def is_home_position(self, addr: LocationAddress) -> bool:
    """True if this address is at a home (non-CZ-staging) word."""
    return addr.word_id in self._home_words

iter_all_lanes

iter_all_lanes() -> Iterator[LaneAddress]

Yield every valid lane address in the architecture.

Enumerates site-bus, word-bus, and zone-bus lanes in both forward and backward directions. Used by :class:~bloqade.lanes.arch.metrics.MoveMetricCalculator to compute max-duration bounds. Prefer get_lane_address(src, dst) for single-pair lookups.

Source code in .venv/lib/python3.12/site-packages/bloqade/lanes/arch/spec.py

def iter_all_lanes(self) -> Iterator[LaneAddress]:
    """Yield every valid lane address in the architecture.

    Enumerates site-bus, word-bus, and zone-bus lanes in both forward
    and backward directions. Used by
    :class:`~bloqade.lanes.arch.metrics.MoveMetricCalculator` to compute
    max-duration bounds. Prefer ``get_lane_address(src, dst)`` for
    single-pair lookups.
    """
    sites_per_word = self.sites_per_word

    # Intra-zone: site buses and word buses.
    for zone_id, zone in enumerate(self._inner.zones):
        for bus_id, bus in enumerate(zone.site_buses):
            for word_id in zone.words_with_site_buses:
                for i in range(len(bus.src)):
                    for direction in (Direction.FORWARD, Direction.BACKWARD):
                        yield LaneAddress(
                            MoveType.SITE,
                            word_id,
                            bus.src[i],
                            bus_id,
                            direction,
                            zone_id,
                        )
        for bus_id, bus in enumerate(zone.word_buses):
            for site_id in zone.sites_with_word_buses:
                for word_id in bus.src:
                    for direction in (Direction.FORWARD, Direction.BACKWARD):
                        yield LaneAddress(
                            MoveType.WORD,
                            word_id,
                            site_id,
                            bus_id,
                            direction,
                            zone_id,
                        )

    # Inter-zone: zone buses.
    for bus_id, zb in enumerate(self._inner.zone_buses):
        for (src_zone, src_word), (_dst_zone, _dst_word) in zip(zb.src, zb.dst):
            for site_id in range(sites_per_word):
                for direction in (Direction.FORWARD, Direction.BACKWARD):
                    yield LaneAddress(
                        MoveType.ZONE,
                        src_word,
                        site_id,
                        bus_id,
                        direction,
                        src_zone,
                    )

to_json

to_json() -> str

Serialize this architecture spec to a JSON string.

Source code in .venv/lib/python3.12/site-packages/bloqade/lanes/arch/spec.py

def to_json(self) -> str:
    """Serialize this architecture spec to a JSON string."""
    return self._inner.to_json()

try_get_endpoints

try_get_endpoints(
    lane_address: LaneAddress,
) -> tuple[LocationAddress, LocationAddress] | None

Resolve lane_address to its (src, dst) location pair, or None when the lane is not a valid lane in the architecture (matches the Rust lane_endpoints contract).

Source code in .venv/lib/python3.12/site-packages/bloqade/lanes/arch/spec.py

def try_get_endpoints(
    self, lane_address: LaneAddress
) -> tuple[LocationAddress, LocationAddress] | None:
    """Resolve ``lane_address`` to its (src, dst) location pair, or
    ``None`` when the lane is not a valid lane in the architecture
    (matches the Rust ``lane_endpoints`` contract).
    """
    result = self._inner.lane_endpoints(lane_address._inner)
    if result is None:
        return None
    rust_src, rust_dst = result
    return (
        LocationAddress.from_inner(rust_src),
        LocationAddress.from_inner(rust_dst),
    )

try_get_position

try_get_position(
    location: LocationAddress,
) -> tuple[float, float] | None

Resolve location to its physical (x, y) position, or None when location doesn't correspond to a valid site under the zone its zone_id selects (matches the Rust location_position contract).

Source code in .venv/lib/python3.12/site-packages/bloqade/lanes/arch/spec.py

def try_get_position(self, location: LocationAddress) -> tuple[float, float] | None:
    """Resolve ``location`` to its physical (x, y) position, or
    ``None`` when ``location`` doesn't correspond to a valid site
    under the zone its ``zone_id`` selects (matches the Rust
    ``location_position`` contract).
    """
    return self._inner.location_position(location._inner)

yield_zone_locations

yield_zone_locations(
    zone_address: ZoneAddress,
) -> Iterator[LocationAddress]

Yield LocationAddresses in the canonical zone-bitstring iteration order.

This is the layout that get_zone_index(loc, zone_address) numbers: every (word, site) pair in the architecture, tagged with zone_address, walked in word-major then site-major order. The iterator visits every word — zone_address is the tag stamped onto each yielded address (and the grid through which downstream calls like get_position interpret it), not a membership filter.

Source code in .venv/lib/python3.12/site-packages/bloqade/lanes/arch/spec.py

def yield_zone_locations(
    self, zone_address: ZoneAddress
) -> Iterator[LocationAddress]:
    """Yield ``LocationAddress``es in the canonical zone-bitstring iteration order.

    This is the layout that ``get_zone_index(loc, zone_address)``
    numbers: every ``(word, site)`` pair in the architecture, tagged
    with ``zone_address``, walked in word-major then site-major order.
    The iterator visits every word — ``zone_address`` is the tag
    stamped onto each yielded address (and the grid through which
    downstream calls like ``get_position`` interpret it), not a
    membership filter.
    """
    zone_id = zone_address.zone_id
    for word_id in range(len(self.words)):
        word = self.words[word_id]
        for site_id in range(len(word.site_indices)):
            yield LocationAddress(word_id, site_id, zone_id)