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

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

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

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

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

IBM: Make bidirectional couplings when server sends no coupling_map

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

In the IBM backend, we require [x, y] to exist in the coupling map to
execute CX x,y -- [y, x] in the coupling map is not enough. So when IBM
does not include a coupling_map for a given backend, we need to include
both [i,j] and [j,i] for all qubits i,j s.t. i != j in the coupling map
we create; currently, we only include [i,j] for all qubits i,j with i <
j, which will cause errors if a circuit includes CX j,i.

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

Quil visitor to use theta string rather than trying to cast to double

This is problematic when there is a U3 gate: it will create a Ry with string param, then revisit.

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

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

Fix bug where IBM remote simulators not added to available backends. Configure IonQ backend to retrieve backend connectivity

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

Added job status logging for IonQ

Also, fixed a compile issue w/ Clang.

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>

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

RZZ gate for XASM and XACC IR

Fixed https://github.com/eclipse/xacc/issues/399

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

iterate the list of terms once and use a more efficient way to check the commutation.

Add more test cases.

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

Note: need to figure out how to deal w/ gradients in this case.
Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

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

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

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

This is mainly targetting the QAOA use case but may handle other simple use cases as well.

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

Ibmq accelerator select lowest queue backend: resolve #441

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

Improvement of the log, minor renaming and clarification of handling of negative job limit parameter.

Moving internal_compiler code to qcor

Signed-off-by: Quantum Brilliance [Simon Yin, Senior Software Engineer] <simon.y@quantum-brilliance.com>

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

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

Merge branch 'tnguyen/qalloc-experiment' of https://github.com/tnguyen-ornl/xacc

 into tnguyen/qalloc-experiment

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