12-CNOT Double Qubit Excitation Gate Achieves Record Efficiency

A groundbreaking decomposition of the double qubit excitation operator has been unveiled by researchers, marking a significant advancement in quantum computing with a record-low CNOT count of 12. This achievement outperforms the previous best, which required 13 CNOTs. Additionally, the new circuit features the lowest CNOT depth at 10 and a total circuit depth of 16, surpassing all known state-of-the-art circuits. Remarkably, this enhancement involves only two extra one-qubit gates, increasing the previous minimum of 11. The findings are detailed in the paper 'A 12-CNOT Double Qubit Excitation Gate,' available on arXiv (identifier 2608.11733). This research is poised to benefit those in quantum information science and hardware development.