inv implementation for SingleQubitOperator

[Fe-r-oz]

Functionality that we want

julia> inv_op = inv(SingleQubitOperator(sHadamard(1)))
sHadamard on qubit 1
X₁ ⟼ + Z
Z₁ ⟼ + X

julia> expected_inv_op = sHadamard(1)
sHadamard on qubit 1
X₁ ⟼ + Z
Z₁ ⟼ + X

julia> inv(sHadamard(1))
sHadamard on qubit 1
X₁ ⟼ + Z
Z₁ ⟼ + X

I will add the twoqubit invs today as well. Hope you find this plausible!

[Fe-r-oz]

Locally the tests passes: I hope it will pass here as well.

julia> include("test_symcliff.jl")
Precompiling QuantumClifford
  1 dependency successfully precompiled in 27 seconds. 46 already precompiled.
Test Summary:            | Pass  Total  Time
Small symbolic operators |  270    270  2.7s
Test Summary:             | Pass  Total  Time
Convert between small ops |   59     59  2.4s
Test Summary:                   | Pass  Total  Time
SingleQubitOperator Inv methods |   14     14  0.1s
Test.DefaultTestSet("SingleQubitOperator Inv methods", Any[], 14, false, false, true, 1.720769482610657e9, 1.720769482702756e9, false, "/home/Desktop/New/inv/QuantumClifford.jl/test/test_symcliff.jl")

[Krastanov]

a couple of notes

To make it easier for reviewers, could you also either mark unfinished pull requests as "draft"? (you are mentioning that you will be adding more to this one).

It is also a good idea to generally make small pull requests that do only one thing, as I would be much quicker to review such pull requests. So you can for instance just deal with single qubit gates in this pull request and submit the multi-qubit gate later. That makes reviewing and merging drastically easier.

[Krastanov]

Locally the tests passes: I hope it will pass here as well.

Thanks! Generally, do not worry about reporting stuff like that. I will anyway wait for the CI to run, so no need to investigate things unless there is a problem.

[Fe-r-oz]

a couple of notes

Thank you for these notes!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.96%. Comparing base (59e399d) to head (5280f11).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #314      +/-   ##
==========================================
- Coverage   82.97%   82.96%   -0.01%     
==========================================
  Files          61       61              
  Lines        4023     4033      +10     
==========================================
+ Hits         3338     3346       +8     
- Misses        685      687       +2     

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[Fe-r-oz]

Thanks for your comments. Indeed, they helped to polish the PR. I hope this is alright now!

[Krastanov]

Thanks for the contribution!

[Fe-r-oz]

Thanks for the feedback!