Commit 662ca396 authored by Nguyen, Thien Minh's avatar Nguyen, Thien Minh
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Restructure demo files: 



- Demo 1: simple execution on multiple backends

- Demo 2: runtime pass manager

- Demo 3: FTQC IR execution

Signed-off-by: default avatarThien Nguyen <nguyentm@ornl.gov>
parent b05493c1

examples/qcor_demos/pirq_workshop/qcor/demo2_circuit_optimization/README.md

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- Trotter circuit (e.g., 2-3 qubits): print gate count before and after optimization; examine the results (e.g. expectations and simulation runtime with and without optimization). 



- Topology placement: QAOA (max-cut) circuits => hardware mapping. 



- Noise-aware mapping: Bell test (H-CX); select an IBM backend with more qubits; should pick the pair with low CX error rate.



- [Skipped] Topology placement: QAOA (max-cut) circuits => hardware mapping.

examples/qcor_demos/pirq_workshop/qcor/demo5_ftqc_tightly_coupled_execution/IQPE_Circuit.png→examples/qcor_demos/pirq_workshop/qcor/demo3_ftqc_tightly_coupled_execution/IQPE_Circuit.png

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examples/qcor_demos/pirq_workshop/qcor/demo3_nisq_noise_mitigation/README.md

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# QCOR NISQ Noise Mitigation Demonstration



## Test cases: Identity circuit (no optimization) & VQE Deuteron H2

## Goals



- Demonstrating result post-processing (expectation calculation and noise mitigation).



- NISQ-era algorithms and utilities: QCOR optimizer, variational algorithms, noise mitigation, etc.



## Outline



- Circuit with an Identity sequence: repeating CNOT gates (no optimization), examining the expectation calculation (theoretical = 1.0) with and without noise mitigation. CLI option to enable noise mitigation on any backend (simulator and IBM)



- [Skipped] Sweeping VQE ansatz: showing the energy values with and without noise mitigation.



## Notes:



- Install mitiq: `pip3 install mitiq`



- Install Qiskit: `pip3 install qiskit`



- Make sure `~/.ibm_config` file is present.



- Noise model JSON generation 

(mitiq performs not very well with device noise model. Hence, use theoretical noise model for demonstration purposes)



```

from qiskit.providers.aer.noise import NoiseModel

import json 



# Use a depolarizing noise model.

noise_model = NoiseModel()

noise_model.add_all_qubit_quantum_error(

    depolarizing_error(0.001, 1),

    ["u1", "u2", "u3"],

)

noise_model.add_all_qubit_quantum_error(

    depolarizing_error(0.01, 2),

    ["cx"],

)

  

print(json.dumps(noise_model.to_dict(True)))

```
 
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