created quantum phase estimation program for examples dir

[ryanhill1]

No description provided.

[vsoftco]

Nice, thanks! The line std::cout << ">> Measurement result q0: " << res << '\n'; should be "...q" << i<<": ", right?

[ryanhill1]

Nice, thanks! The line std::cout << ">> Measurement result q0: " << res << '\n'; should be "...q" << i<<": ", right?

Yes, it should. Good catch

[ryanhill1]

It seems that this last commit failed the random.cpp unit test for qpp_rand.RealMatrix line 148: EXPECT_NEAR(0, average, 1); // very likely. The message reads, The difference between 0 and average is 1.0221263420644076, which exceeds 1. Do you know what caused this failure?

[vsoftco]

@ryanhill1 That's expected sometimes. It's a randomness test, which sometime can fail (for example, if the deviation happens to be a bit too large). I restarted that particular build, so it should pass (almost always passes second time :) ). I should modify that test to use more sophisticated randomness checks when I get some time...

[ryanhill1]

Got it. Thanks, love the program!

[vsoftco]

Great thanks!!