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Add lazy field to QuantumOpticsRepr (qojulia/QuantumOptics.jl#521) #86

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Add lazy field to QuantumOpticsRepr (qojulia/QuantumOptics.jl#521) #86

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11 changes: 9 additions & 2 deletions src/express.jl
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Expand Up @@ -22,10 +22,17 @@ express(s, repr::AbstractRepresentation) = express(s, repr, UseAsState())
# Commonly used representations -- interfaces for each one defined in separate packages
##

"""Representation using kets, bras, density matrices, and superoperators governed by `QuantumOptics.jl`."""
Base.@kwdef struct QuantumOpticsRepr <: AbstractRepresentation
"""Representation using kets, bras, density matrices, and superoperators governed by `QuantumOptics.jl`.

When `lazy=true`, composite symbolic expressions (sums, products, tensor products)
are expressed into structure-preserving lazy operators (`LazySum`, `LazyProduct`,
`LazyTensor`) instead of eagerly-materialised dense/sparse operators."""
Base.@kwdef struct QuantumOpticsRepr <: AbstractRepresentation
cutoff::Int = 2
lazy::Bool = false
end
# preserve the historical positional one-argument constructor QuantumOpticsRepr(cutoff)
QuantumOpticsRepr(cutoff::Int) = QuantumOpticsRepr(cutoff, false)
"""Similar to `QuantumOpticsRepr`, but using trajectories instead of superoperators."""
struct QuantumMCRepr <: AbstractRepresentation end
"""Representation using tableaux governed by `QuantumClifford.jl`"""
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