Fionn Malone

Add unary iteration based phase estimation

1

There are some improvements over what is currently implemented for QPE in qualtran based on the linear T paper which are provided in the THC paper. We have the subcomponents...

List of Arithmetic Bloqs which need decompositions

5

## Square integers - code https://github.com/quantumlib/Qualtran/blob/main/qualtran/bloqs/arithmetic/multiplication.py#L93 - ref: https://arxiv.org/abs/2105.12767. pg 76 for Toffoli complexity (text not circuit) - adjoint: No ## Sum of Squares (integers) - code: https://github.com/quantumlib/Qualtran/blob/main/qualtran/bloqs/arithmetic/multiplication.py#L135 - ref:...

Issues and improvements for chemistry algorithms

3

This is a tracking issue for various known issues or limitations in the chemistry algorithms implementations. # THC - missing rotations primitive #386 - cost differences: #390 # SF -...

Make ReflectionUsingPrepare multiply controlled

2

Currently it only accepts a single control_val (and this is a hard assumption as it inherits from SpecializedSingleQubitControlledGate). Sometimes we would like more than one control. Should we enable this?

Add QPE example for THC chemistry Hamiltonian

1

Fixes: https://github.com/quantumlib/Qualtran/issues/1591