Quantum risk Calculator

Gate Infidelity

Gate infidelity is used to measure how noisy a quantum gate is. We assume that the gate infidelity will continue to drop exponentially but that this development will stall at an infidelity of 5 · 10−6 (optimistic case) or 5 · 10−5 (less optimistic case). For the optimistic case we expect that the gate infidelity will continue to follow DeVincenzo’s law which predicts a reduction of the infidelity by a factor of 2 per year. The data points are taken from the following table:

gate fadelityyearreference
0.93472013Córcoles, A. D. (et al.) process_verf
0.962014Chow (et al.) scalable
0.972015Córcoles, A.D. (et al.) error_detection
0.992016Sheldon (et al.) tuning_up
0.9952017Reynolds google
0.9972018Reynolds google
  1. Co ́rcoles, A. D., et al. “Process Verification of Two-Qubit Quantum Gates by Randomized Benchmarking.” Physical Review A 87.3 030301 (2013). https://www.doi.org/10.1103/PhysRevA.87.030301
  2. Chow, J. M., et al. “Implementing a Atrand of a Scalable Fault-Tolerant Quantum Computing Fabric.” Nature Communications 5. https://doi.org/10.1038/ncomms5015
  3. Reynolds, M. “Google on Track for Quantum Computer Breakthrough by End of 2017.” New Scientist (accessed 2 October 2018). https://www.newscientist.com/article/2138373-google-on-track-for-quantum-computer-breakthrough-by-end-of-2017/
  4. Co ́rcoles, A., et al. “Demonstration of a Quantum Error Detection Code Using a Square Lattice of Four Superconducting Qubits.” Nature Communications 6 6979 (2015). https://www.doi.org/10.1038/ncomms7979
  5. Sheldon, S., Magesan, E., Chow, J.M., Gambetta, J.M. “Procedure for Systematically Tuning Up Cross-Talk in the Cross-Resonance Gate.” Physical Review A 93.6 060302 (2016). https://www.doi.org/10.1103/PhysRevA.93.060302