Scientists at Technical University of Munich, led by Frederik Pfeiffer, have demonstrated a high-fidelity two-qubit gate utilising multimode superconducting P-mon qubits. Achieving a CZ gate with a duration of 180 nanoseconds and a fidelity of 99.62 ±0.04%, represents a significant advance in the development of scalable superconducting quantum architectures. By carefully exploiting the mediator modes intrinsic to P-mon qubits, they successfully reduced unwanted ZZ-type interactions to below 3.6 ±0.5kHz, thereby preserving qubit coherence and paving the way for larger, more stable quantum processors. This approach offers inherent protection against decoherence originating from the readout environment, addressing a critical obstacle in the ongoing pursuit of practical quantum computing. Reduced qubit interactions enable high-fidelity superconducting quantum computation Error rates were reduced to 0.38%, a substantial improvement compared to previous superconducting qubit designs. Achieving fidelity exceeding 99% is a crucial milestone for scalable quantum computing, a threshold previously difficult to surpass due to persistent qubit-qubit interactions that introduce errors which accumulate rapidly as processor size increases. These unwanted interactions stem from capacitive or inductive coupling between qubits, leading to frequency shifts and unwanted phase evolution. At Technical University of Munich and Saarland University, a controlled two-qubit CZ gate with a fidelity of 99.62 ±0.04% was implemented, utilising P-mon qubits and their unique ‘mediator’ modes to facilitate on-demand coupling. The CZ gate, a fundamental building block for quantum algorithms, requires precise control over the interaction between qubits to perform logical operations without introducing significant errors. The P-mon qubits’ performance was further characterised by measuring unwanted ZZ-type interactions, always-on coherent errors that accumulate as processor size increases and limit the duration of quantum computations. These interactions, arising from residual coupling between qubits even in the idle state, were suppressed to below 3.6 ±0.5kHz. This suppression is achieved through the careful design of the P-mon qubit,