Developing Spin Qubit Based Hybrid Magnetic Systems for Quantum Computing
Abstract
The past decade witnessed significant progress in quantum information technology, a new discipline of modern scientificstudy. In contrast to the conventional digital information systems, emerging quantum information applications provide a revolutionary platform that employs inherent quantum properties, such as coherence, superposition, and entanglement to enable denser, faster, and more energy-efficient information processing. Functional quantum systems such as superconducting qubits, semiconducting qubits, Majorana fermions, and trapped ions have been extensively explored in this context, and efforts devoted to developing transformative quantum computers are underway. Despite these remarkable progresses, problems related to decoherence, scalability, quantum interconnects, and control of entanglement remain to be solved in order to achieve the desirable quantum supremacy. At this early stage of quantum information technology, novel physical platforms capable of solving these problems are under active search.Nitrogen-vacancy (NV) centers, optically active atomic defects in diamond, are directly relevant in this context due to their excellent quantum coherence, single-spin addressability, and remarkable functionality over a broad temperature range. Exploiting these advantages, we proposeto harness NV centers to address the major challenges facing the research at the forefront of quantum information science and technology. Specifically, by integrating NV centers with nano-magnetic devices, we propose to realize energy-efficient control and readout of individual NV spin qubits at the nanoscale, promoting the scalability of NV centers for implementing quantum computing technologies. Taking advantage of spin waves harbored by a magnetic insulator, we propose to establish mesoscopic scale entanglement betweentwo (multiple) #distant# NV spin qubits, offering a handy solid-state-based platform for large-scale quantum information processing.The proposed research will make important contributions to the burgeoning field of quantum sciences and technologies. By developingNV-based hybrid quantum architectures and demonstrating their operations in an energy-efficient way, we propose to provide a high-density, scalable quantum computing platform with the potential to ultimately work at room temperature. The appreciable advantage of NV centers to communicate with optical photons will bring significant opportunities for developing interactive quantum networks for macroscale information transfer between the proposed NV quantum processors, which is beyond the functionality of the current-state-of-the-art. We anticipate that the proposed quantum systems will contribute to a broad range of Naval related applications, includingmilitary communications, information security, intelligence, and radar reconnaissance.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 12, 2023
- Source ID
- N000142312146
Entities
People
- Chunhui Du
Organizations
- Georgia Tech Research Corporation
- Office of Naval Research
- United States Navy