Near-Term Distributed Quantum Computation using Mean-Field Corrections and Auxiliary Qubits

Understand

Distributed quantum computation is often proposed to increase the scalability of quantum hardware, as it reduces cooperative noise and requisite connectivity by sharing quantum information between distant quantum devices.

• However, such exchange of quantum information itself poses unique engineering challenges, requiring high gate fidelity and costly non-local operations.
• To mitigate this, we propose near-term distributed quantum computing, focusing on approximate approaches that involve limited information transfer and conservative entanglement production.
• We first devise an approximate distributed computing scheme for the time evolution of quantum systems split across any combination of classical and quantum devices.