EAGER: GaP-diamond photonic-spin devices for scalable quantum information processing

概述：这项急切的提议的目标是确定一种可扩展的量子光网络的可行性，该网络基于钻石中的NV中心耦合到磷化镓(GaP)光子器件。将制造和实施可伸缩性所需的两个关键部件：(1)大面积间隙-钻石集成和器件制造，以及(2)在同一芯片上对量子器件频率进行独立的电子调谐。如果成功，这项研究将为开发可用于保密通信、量子算法和量子模拟的大规模量子信息处理器(QIP)铺平道路。智力优势：这项研究方案确定了GaP-钻石杂化材料系统是实现基于测量的可扩展量子信息网络的极具前景的系统。在混合系统中，能隙提供光子器件层，而金刚石氮空位(NV)中心提供光子耦合自旋量子比特。拟议的工作解决了钻石缺口一体化方面的主要挑战。该项目的第一个具体目标是确定性地将间隙膜转移和粘接到面积能够支持100个集成器件的钻石芯片上。除了QIP应用外，由于GaP的宽带隙和电光特性，开发的技术有望在经典光子学中得到应用。第二个目标是将近表面NV中心与同一芯片上三个或更多器件中的芯片上间隙腔进行电调谐。如果实现，这将是第一次演示将量子发射器特定于器件的电调谐到光腔共振上，并将成为所有光子-自旋固态量子比特系统的重要里程碑。广泛的影响：集成到片上光学器件中的NV中心的发展有望带来可扩展的量子信息处理(QIP)。可扩展的QIP将实现远距离安全通信，多项式时间内大素数乘积的因式分解，以及对工程新材料至关重要的多体量子系统的高效模拟。从历史上看，可伸缩性一直是量子信息处理中的一个挑战，因为通常具有良好量子特性的量子比特并没有在固态系统中实现，这阻碍了器件的制造和集成。拟议研究进程的更广泛影响包括开发公共软件，以便在亚马逊云上的虚拟计算机集群上实施时域有限差分(FDTD)电磁模拟，以及培训研究生和本科生。

Overview:The objective of this EAGER proposal is to determine the feasibility of a scalable quantum optical network based on NV-centers in diamond coupled to gallium phosphide (GaP) photonic devices. Two critical components necessary for scalability will be fabricated and implemented: (1) large-area GaP-diamond integration and device fabrication and (2) independent electrical tuning of quantum device frequencies on the same chip. If successful, this research will pave the way toward a large-scale quantum information processor (QIP) that could be utilized for secure communication, quantum algorithms, and quantum simulation.Intellectual Merit:This research proposal identifies the GaP-diamond hybrid material system as an extremely promising system to realize a scalable measurement-based quantum information network. In the hybrid system, the GaP provides the photonic device layer while the diamond nitrogen-vacancy (NV) center provides the photon-coupled spin qubit. The proposed work addresses the major challenges in diamond-GaP integration. The first specific goal of this project is the deterministic transfer and bonding of a GaP membrane to a diamond chip with an area capable of supporting one hundred integrated devices. In addition to QIP applications, the technique developed is expected to have applications in classical photonics due to GaP's wide bandgap and electro-optic properties. The second goal is the electric tuning of near-surface NV centers onto resonance with on-chip GaP cavities in three or more devices on the same chip. If realized, this will be the first demonstration of device specific electrical tuning of a quantum emitter onto an optical cavity resonance and will be an important milestone for all photonic-spin solid-state qubit systems.Broader Impacts:The development of NV centers integrated into on-chip optical devices is expected to lead to scalable quantum information processing (QIP). Scalable QIP will enable long-distance secure communication, factoring of products of large-prime numbers in polynomial time, and the efficient simulation of many-body quantum systems critical for engineering new materials. Historically, scalability has proven to be a challenge in quantum information processing because typically quantum bits with good quantum properties have not been realized in a solid-state system, prohibiting device fabrication and integration. Broader impacts of the proposed research process include developing public software to implement finite-difference-time-domain (FDTD) electromagnetic simulations on a virtual computer cluster on the Amazon cloud and training both graduate and undergraduate students.