Co-Design quantum simulation of nanoscale NMR

TL;DR

This paper demonstrates the use of a specialized superconducting quantum processor to simulate nanoscale NMR phenomena, reducing gate complexity and enabling predictions on noisy intermediate-scale quantum computers.

Contribution

It introduces a Co-Design quantum processor architecture that minimizes gate requirements for nanoscale NMR simulations on NISQ devices.

Findings

Over 90% reduction in SWAP gates for >20 qubit chips

Successful simulation of nanoscale NMR resonances on a noisy quantum computer

Implementation of a QCR for fast resonator reset in the quantum processor

Abstract

Quantum computers have the potential to efficiently simulate the dynamics of nanoscale NMR systems. In this work we demonstrate that a noisy intermediate-scale quantum computer can be used to simulate and predict nanoscale NMR resonances. In order to minimize the required gate fidelities, we propose a superconducting application-specific Co-Design quantum processor that reduces the number of SWAP gates by over 90 % for chips with more than 20 qubits. The processor consists of transmon qubits capacitively coupled via tunable couplers to a central co-planar waveguide resonator with a quantum circuit refrigerator (QCR) for fast resonator reset. The QCR implements the non-unitary quantum operations required to simulate nuclear hyperpolarization scenarios.