Scalable Architecture for a Room Temperature Solid-State Quantum Information Processor

TL;DR

This paper proposes a scalable, room-temperature solid-state quantum processor architecture based on Nitrogen-Vacancy centers in diamond, addressing key challenges in control, disorder, and decoherence for practical quantum computing.

Contribution

It introduces a hierarchical control architecture for a scalable quantum processor operating at room temperature, leveraging recent experimental advances with NV centers.

Findings

Architecture is robust to disorder and decoherence.

Provides a pathway for scalable quantum computing at room temperature.

Offers insights into non-equilibrium many-body quantum physics.

Abstract

The realization of a scalable quantum information processor has emerged over the past decade as one of the central challenges at the interface of fundamental science and engineering. Much progress has been made towards this goal. Indeed, quantum operations have been demonstrated on several trapped ion qubits, and other solid-state systems are approaching similar levels of control. Extending these techniques to achieve fault-tolerant operations in larger systems with more qubits remains an extremely challenging goal, in part, due to the substantial technical complexity of current implementations. Here, we propose and analyze an architecture for a scalable, solid-state quantum information processor capable of operating at or near room temperature. The architecture is applicable to realistic conditions, which include disorder and relevant decoherence mechanisms, and includes a hierarchy of control at successive length scales. Our approach is based upon recent experimental advances involving Nitrogen-Vacancy color centers in diamond and will provide fundamental insights into the physics of non-equilibrium many-body quantum systems. Additionally, the proposed architecture may greatly alleviate the stringent constraints, currently limiting the realization of scalable quantum processors.