quchip.devices.spaces¶

Backend-neutral local Hilbert spaces and their named operators.

Classes

`ChargeSpace`(num_basis)	Finite integer-charge basis centered on zero charge.
`CustomSpace`(dimension, operators)	Named local operators supplied as matrices or zero-argument JAX callables.
`FockSpace`(levels)	Finite Fock ladder with the standard bosonic and qubit operators.
`LocalSpace`()	Numerical realization of the operators used by one device model.
`PhaseGridSpace`(points, extent)	Uniform endpoint-excluded phase grid with nonperiodic finite differences.

class quchip.devices.spaces.LocalSpace[source]¶

Bases: ABC

Numerical realization of the operators used by one device model.

abstract property dimension: int¶: Return the authored local-space dimension.

abstractmethod matrix(name)[source]¶

Return one named operator as a JAX-compatible dense array.

Parameters:: name (str)
Return type:: Any

operator(name, backend)[source]¶

Lower one named local operator through backend.

Parameters:

name (str)
backend (Any)

Return type:

Any

class quchip.devices.spaces.FockSpace(levels)[source]¶

Bases: LocalSpace

Finite Fock ladder with the standard bosonic and qubit operators.

Parameters:: levels (int)

levels: int¶

property dimension: int¶: Return the authored local-space dimension.

matrix(name)[source]¶

Return one named operator as a JAX-compatible dense array.

Parameters:: name (str)
Return type:: Any

operator(name, backend)[source]¶

Lower one named local operator through backend.

Parameters:

name (str)
backend (Any)

Return type:

Any

class quchip.devices.spaces.ChargeSpace(num_basis)[source]¶

Bases: LocalSpace

Finite integer-charge basis centered on zero charge.

Parameters:: num_basis (int)

num_basis: int¶

property dimension: int¶: Return the authored local-space dimension.

matrix(name)[source]¶

Return one named operator as a JAX-compatible dense array.

Parameters:: name (str)
Return type:: Any

class quchip.devices.spaces.PhaseGridSpace(points, extent)[source]¶

Bases: LocalSpace

Uniform endpoint-excluded phase grid with nonperiodic finite differences.

The centered-difference stencil does not wrap across the grid boundary; values beyond either endpoint are treated as zero.

Parameters:

points (int)
extent (float)

points: int¶

extent: float¶

property dimension: int¶: Return the authored local-space dimension.

matrix(name)[source]¶

Return one named operator as a JAX-compatible dense array.

Parameters:: name (str)
Return type:: Any

class quchip.devices.spaces.CustomSpace(dimension, operators)[source]¶

Bases: LocalSpace

Named local operators supplied as matrices or zero-argument JAX callables.

Parameters:

dimension (int)
operators (Mapping[str, Any])

property dimension: int¶: Return the authored local-space dimension.

matrix(name)[source]¶

Return one named operator as a JAX-compatible dense array.

Parameters:: name (str)
Return type:: Any