Lightning talk at the Quantum Conversations By the Bay (QCBB)

1. VQE - are we there yet?
Vesselin G. Gueorguiev, Ph.D.
Ronin Institute &
Institute for Advanced Physical Studies

2. VGG talk for Quantum Conversations By the Bay /Aug. 26, 2020/
Outline
● What is VQE and How can we use it?
● What are the problems preventing its utilization today?
● Case study:
○ Using Tequila and PennyLane
● Conclusion
● Q&A

3. What is VQE and How can we use it?
The Variational Quantum Eigensolver
VGG talk for Quantum Conversations By the Bay /Aug. 26, 2020/
Zen4Maker MeetUp at the Hacker Dojo, Santa Clara, CA /Sep. 13, 2019/
www.SlideShare.net/VGG-Consulting

4. What are the problems
preventing its utilization today?
It depends on the implementation!
from qiskit.ignis.mitigation.measurementimport CompleteMeasFitter
from qiskit.providers.aer.noise import NoiseModel
device = provider.get_backend("ibmq_vigo") noise_model =
NoiseModel.from_backend(device.properties())
https://qiskit.org/textbook/ch-applications/vqe-molecules.html
from qiskit import Aer, execute
backend = Aer.get_backend("qasm_simulator")
NUM_SHOTS = 10000
VGG talk for Quantum Conversations By the Bay /Aug. 26, 2020/

5. Case study - Using Tequila and PennyLane
VGG talk for Quantum Conversations By the Bay /Aug. 26, 2020/
https://github.com/VGGatGitHub/CDL-2020-Cohort-Projects/tree/master/Project_2_VQE_Molecules/Research_Files

6. VGG talk for Quantum Conversations By the Bay /Aug. 26, 2020/

8. via Tequila
VGG talk for Quantum Conversations By the Bay /Aug. 26, 2020/

9. Conclusion
➔ Cross check your results!
➔ Cross check your results again!
➔ Check if error mitigation is implemented!
VGG talk for Quantum Conversations By the Bay /Aug. 26, 2020/

10. Q&A
https://github.com/VGGatGitHub/CDL-2020-Cohort-Projects/tree/master/
Project_2_VQE_Molecules/Research_Files
For more on my talk about VQE applications see:
www.SlideShare.net/VGG-Consulting
https://github.com/CDL-Quantum
VGG talk for Quantum Conversations By the Bay /Aug. 26, 2020/