Commits · e741af2dbe52e0b1fed71560fdce6290a48c4ff8 · ORNL Quantum Computing Institute / xacc

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05 Sep, 2021 1 commit

qpp Accelerator: Check for post-measure gates more accurately · e741af2d

Adams, Austin Joel authored Sep 05, 2021



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>

e741af2d

20 Aug, 2021 1 commit
- start on extending controlled-u generator to support gray-code based generation of multi-ctrl gates · 7886f70c
  Mccaskey, Alex authored Aug 20, 2021
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Signed-off-by: Alex McCaskey <mccaskeyaj@ornl.gov>
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  7886f70c
05 Mar, 2021 1 commit
- Support FTQC buffer size adjustment · aa3bcd7e
  Nguyen, Thien Minh authored Mar 05, 2021
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Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>
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  aa3bcd7e
19 Feb, 2021 1 commit
- Qpp to support Reset for local testing · db983866
  Nguyen, Thien Minh authored Feb 19, 2021
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Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>
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  db983866
20 Jan, 2021 1 commit
- Using Qpp as a test case for ExecutionInfo · 01aab727
  Nguyen, Thien Minh authored Jan 20, 2021
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Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>
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  01aab727
23 Nov, 2020 1 commit
- adding example showing how to create complex circuit, and apply placement strategy on it · 1bad36fe
  Mccaskey, Alex authored Nov 23, 2020
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Signed-off-by: Alex McCaskey <mccaskeyaj@ornl.gov>
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  1bad36fe
28 Sep, 2020 2 commits
- Enable VQE mode by default in QPP (if not simulating shots) · ed294a25
  Nguyen, Thien Minh authored Sep 28, 2020
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Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>
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  ed294a25
- Work on VQE mode for Qpp · 9d999003
  Nguyen, Thien Minh authored Sep 28, 2020
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Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>
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  9d999003
04 Sep, 2020 3 commits
- Minor fix for FTQC mode · be74055b
  Nguyen, Thien Minh authored Sep 04, 2020
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Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>
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  be74055b
- Use single measure map to store FTQC measurement results · b5322fce
  Nguyen, Thien Minh authored Sep 04, 2020
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Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>
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  b5322fce
- Initial support for fast feedback execution · 681dea29
  Nguyen, Thien Minh authored Sep 04, 2020
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Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>
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  681dea29
24 Aug, 2020 2 commits
- Implemented toJson() for noise model · cd6ceeb7
  Nguyen, Thien Minh authored Aug 24, 2020
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Tested by: the json can be loaded by Aer
Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>
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  cd6ceeb7
- Added a util to convert b/w different noise channel representations · 158e5659
  Nguyen, Thien Minh authored Aug 24, 2020
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Making use of exisitng implementations in Qpp library.
Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>
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  158e5659
12 Jun, 2020 1 commit

Fixed exp-val-z calculation for the Qpp Accelerator · 9ac4b78b

Nguyen, Thien Minh authored Jun 12, 2020

Swapping the order of conditional check so that in we can further optimize for the case where there is no If statements in the circuit nor shots; in that case, calculate expectation analytically.

Also, fixed a potential bug whereby the shots count may not be reset if using the accelerator multiple times.
Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

9ac4b78b

28 May, 2020 1 commit
- Implemented bitstring direct sampling for the Qpp Acc · a5e89b73
  Nguyen, Thien Minh authored May 28, 2020
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Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>
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  a5e89b73
09 Jan, 2020 1 commit
- updates to qpp to call initialize when updateparameters is called. set bit order to lsb · 8a6008c8
  Mccaskey, Alex authored Jan 09, 2020
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Signed-off-by: Alex McCaskey <mccaskeyaj@ornl.gov>
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  8a6008c8
08 Jan, 2020 1 commit

Implement 'shots' mode for Qpp backend · 75a8c276

Nguyen, Thien Minh authored Jan 08, 2020



Also add a bunch of unit tests (ported local-ibm use cases) to make sure they are okay.
Signed-off-by: Thien Nguyen <nguyentm@ornl.gov>

75a8c276

27 Dec, 2019 1 commit

Implement QPP backend · 233a893a

Nguyen, Thien Minh authored Dec 27, 2019


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

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

233a893a