GitLab

Updated the RO error decorator

Changed the order of retrieving ro probabilities: if a file path is explicitly specified, we should always use it rather than the data from the accelerator.
Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

IonQ Accelerator bug fix 

Fixing bug: closing brace before code

Users reported incorrect ro mitigation decorator.

This is due to the ro error probabilities are incorrect. The code to populate the meas1_prep0 data was accidentally placed outside the if scope, hence contain bogus data.
Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

- Batch mode: override base RemoteAccelerator to run one-by-one.

- Fixed U3 decompose for IonQProgramVisitor: looks like the decomposition is not correct (incorrect results). Also, IonQ supports native sqrt-X gate, hence just use the same U3 -> (sx-rz) as that of IBM.

Tested by: running on IonQ remote simulator.
Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

Create plugin for GTRI testbed backend

Fixed https://github.com/eclipse/xacc/issues/491

Fixed a bug in single-qubit matrix decomposition

The sub-routine must return once it found the decomp.
Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

Added tests
Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

Fixed https://github.com/eclipse/xacc/issues/463

More reliable finding of preamble.
Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>
Signed-off-by: Thien Nguyen <thien.md.nguyen@gmail.com>

Added some missing headers for GCC 11 compatibility

Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

Adding <exception> include to be compatible w/ gcc 11.1
Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

Signed-off-by: Alex McCaskey <mccaskeyaj@ornl.gov>

Signed-off-by: Alex McCaskey <mccaskeyaj@ornl.gov>

Signed-off-by: Alex McCaskey <mccaskeyaj@ornl.gov>

Signed-off-by: Alex McCaskey <mccaskeyaj@ornl.gov>

Fixed https://github.com/eclipse/xacc/issues/466

Cherrypicking the eigen fix to XACC:

https://gitlab.com/libeigen/eigen/-/commit/66d073c38e3cd5dad974deea7b3d1d45247ea55b



Updating the whole eigen to the latest version brings other unneccesary compatibility issue.
Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

Adding layer metadata to gate node in the DAG representation

Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

The string output now contains the layer info.
Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

Add some instructions for common ion trap native gates

AcceleratorBuffer: Use exp-val-z extra info for getExpectationValueZ() if present

Unconditonally return exp-val-z from AcceleratorBuffer extra info as
getExpectationValueZ() if exists. If we have a more precise result at
hand, why not use it instead of calculating a less precise answer?
Signed-off-by: Austin Adams <aja@gatech.edu>

Not sure if users would use these, but they are useful in
IRTransformations in the GTRI testbed backend.

Definitions are from the Methods section of the following paper:
https://www.nature.com/articles/nature18648

Signed-off-by: Austin Adams <aja@gatech.edu>

qpp Accelerator: Check for post-measure gates more accurately

As a result of XACC IR being serialized, it's possible to have gates
follow Measure instructions without the circuit truly having
post-measure gates. For example:

    H 0
    Measure 0
    H 1
    Measure 1

In cases like that, the current QppAccelerator decides it cannot
simulate the circuit once and repeatedly sample the resulting state
vector to simulate "runs." That is an overzealous judgment, since none
of the gates that follow the Measure instructions actually depend on the
results of measurements.

So instead, in the QppAccelerator logic detecting post-measurement
gates, track which qubits have been measured, and only report
post-measurement gates if it sees a gate operating on a qubit with an
earlier Measure instruction.
Signed-off-by: Austin Adams <aja@gatech.edu>

Signed-off-by: Alex McCaskey <mccaskeyaj@ornl.gov>

Add placement option to QAOA

Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>