Smarak Maity

Quantum computing will revolutionize fields like logistics, materials science, and drug discovery. However, current noisy quantum hardware allows only relatively small-scale demonstrations of quantum algorithms. Achieving reliable, correct behavior for larger circuits is a major focus of the field. It is well known that dynamical decoupling can improve fidelity. Decoupling can suppress phase () errors on individual qubits and also nullify unwanted crosstalk between the qubits.

Excitement about the promise of quantum computers is tempered by the reality that the hardware remains exceptionally fragile and error prone, forming a bottleneck in the development of alternative applications. In this paper, we describe and experimentally test a fully autonomous workflow designed to deterministically suppress errors in quantum algorithms from the gate level through to circuit execution and measurement.

Abstract Nuclear spins interact weakly with their environment and therefore exhibit long coherence times. This has led to their use as memory qubits in quantum information platforms, where they are controlled via electromagnetic waves. Scaling up such platforms comes with challenges in terms of power efficiency, as well as cross-talk between devices. Here, we demonstrate coherent control of a single nuclear spin using surface acoustic waves.