Two Key Challenges
- Circuit Cutting classical cost
Classical reconstruction cost of applying quantum circuit cutting scales exponentially with the number of cuts applied, as does the number of subcircuit executions required.
- Circuit Cutting with Noise
The accuracy of using circuit cutting
techniques for circuits in the presence of
an environment is largely undiscovered
work, yet is necessary to realise circuit
cutting in practice.
Research Idea
Present novel adaptions to existing circuit-cutting techniques, robust against differenttypes of environments (dephasing, amplitude damping, depolarising etc.) and resilient to
quantum errors.
Circuit cutting for multi-quantum processor platforms, accounting for noise and considering error-correction solutions for the communication between devices.
Methodology
Begin with exploring circuit cutting in the presence of noise…
- Analyse the performance and accuracy of these techniques for many different types of noise (including possibly solving master equations for Hamiltonians that generate the unitary circuits).
- After developing an accurate characterisation of performance against noise, develop error-correction/entanglement based techniques to improve both circuit-cutting and the quantum communication between subcircuits.
The Team
Michael Hart Queen’s
John McAllister Queen’s
