Multiple-time Quantum Imaginary Time Evolution Enhances Ground State Fidelity And Reduces Measurement Overhead For Complex Hamiltonians

Multiple-time Quantum Imaginary Time Evolution Enhances Ground State Fidelity And Reduces Measurement Overhead For Complex Hamiltonians

A new quantum algorithm, Multiple-Time Imaginary-Time Evolution, significantly enhances the accuracy and efficiency of preparing ground states on quantum hardware, even for complex systems with interconnected components, by utilising multiple imaginary time steps and enabling parallel processing.