HISTORY.md

Yao v0.6.0 Release Notes

New Features

• Symbolic Computation Support via SymEngine.
• automatic differentiation support with reversibility based optimization
• better CUDA performance in CuYao
• unitary channel support in YaoBlocks#101
• better measure with operators in YaoBlocks#100
• yao script a mark up language for quantum circuit in YaoBlocks#92
• new fidelity grad and operator fidelity grad. YaoBlocks#109

Documentation Improvements

• new website! yaoquantum.org
• new tutorial! tutorials.yaoquantum.org
• new benchmark! yaoquantum.org/benchmark

Core component package changes

YaoBase changes

• generic batch kron (#18) (Roger-luo)
• make batched kron more general (#16) (GiggleLiu)
• Fix measure dispatch (#22) (GiggleLiu)
• fix measure (#20) (GiggleLiu)
• add curried version of partial_tr (#19) (Roger-luo)

YaoArrayRegister changes

Closed issues:

• instruct! ambiguity error in julia1.2 (#28)
• The jldoctest fails (#26)

Merged pull requests:

• fix type error when ctrl is an empty tuple (#35) (Roger-luo)
• propagate inbounds (#34) (Roger-luo)
• Transposed storage (#30) (GiggleLiu)
• fix return type (#33) (Roger-luo)
• fix partial bra * ket (#32) (Roger-luo)
• add support for symbolic (#31) (Roger-luo)
• Fix measure dispatch (#42) (GiggleLiu)
• Fix collapseto (#40) (GiggleLiu)
• Fix transpose copy (#39) (GiggleLiu)
• Val(:H) instruct (#37) (GiggleLiu)

YaoBlocks changes

• Fix rotation (#93) (Roger-luo)
• fix repeat dispatch (#88) (GiggleLiu)
• fix a typo (#85) (GiggleLiu)
• fix measure, symad (#84) (GiggleLiu)
• fix repeat performance issue (#83) (Roger-luo)
• add Cz gate (#82) (Roger-luo)
• run formatter (#65) (Roger-luo)
• fix put(chain...) backward (#80) (GiggleLiu)
• Fix sparsecheck on 1.3 (#77) (Roger-luo)
• make expect syntax consistent (#74) (Roger-luo)
• add more docs (#73) (Roger-luo)
• automatic differentiation (#71) (GiggleLiu)
• loose type constraints to support symbolic computation (#69) (Roger-luo)
• Tree manipulation (#68) (GiggleLiu)
• fix put(chain...) backward (#80) (GiggleLiu)
• Noise (#104) (Roger-luo)
• add unitary channel (#101) (Roger-luo)
• better measure with op (#100) (GiggleLiu)
• concentrate -> subroutine (#96) (Roger-luo)
• New dump load (#92) (GiggleLiu)
• transposed storage (#91) (GiggleLiu)
• Dispatch Hadamard gate to specialized functions (#89) (GiggleLiu)
• fix a typo (#85) (GiggleLiu)
• add support to pair in chain (#72) (Roger-luo)

External dependencies

LuxurySparse

• fix 1.3 compat (#25) (Roger-luo)
• fix #201 (#24) (Roger-luo)
• add randn! and rand! and zero (#23) (GiggleLiu)
• fix-nightly-ambiguity-error (#22) (GiggleLiu)
• fix-diag to sparse conversion (#21) (GiggleLiu)
• Specialize Broadcast (#33) (Roger-luo)
• polish sparse interface, new hadamard product (#29) (GiggleLiu)

Yao v0.4.0

More Modulized Arch

We make Yao a meta package over several component packages to make it more modulized to make the development faster. Now most of the code are in

• YaoBase
• YaoBlocks
• YaoArrayRegister

Block Tree

Now all the blocks in Yao represents a quantum operator and there's no MatrixBlock anymore, most blocks will have mat to get its matrix, but blocks might not have matrix or hard to have a matrix will just error when you try to call it.

There's no need to insert classical function inside blocks with FunctionBlock instead of just doing a function call.

Therefore, the following types are removed:

FunctionBlock
MatrixBlock

Registers

Since we are going to support more kinds of registers, register is deprecated, and use the type constructor directly is preferred, e.g ArrayReg.

Circuit Simplification

We add basic support on circuit simplification, and provide an extensible interface to add new simplification rules. A single new interfce: simplify is added.