Controlling and manipulating individual quantum systems in solids underpins the growing interest in the development of scalable quantum technologies.Recently,hexagonal boron nitride(hBN)has garnered significant attent...Controlling and manipulating individual quantum systems in solids underpins the growing interest in the development of scalable quantum technologies.Recently,hexagonal boron nitride(hBN)has garnered significant attention in quantum photonic applications due to its ability to host optically stable quantum emitters.However,the large bandgap of hBN and the lack of efficient doping inhibits electrical triggering and limits opportunities to study the electrical control of emitters.Here,we show an approach to electrically modulate quantum emitters in an hBN-graphene van der Waals heterostructure.We show that quantum emitters in hBN can be reversibly activated and modulated by applying a bias across the device.Notably,a significant number of quantum emitters are intrinsically dark and become optically active at non-zero voltages.To explain the results,we provide a heuristic electrostatic model of this unique behavior.Finally,employing these devices we demonstrate a nearly-coherent source with linewidths of~160 MHz.Our results enhance the potential of hBN for tunable solid-state quantum emitters for the growing field of quantum information science.展开更多
Diamond is a material of choice in the pursuit of integrated quantum photonic technologies.So far,the majority of photonic devices fabricated from diamond are made from(100)-oriented crystals.In this work,we demonstra...Diamond is a material of choice in the pursuit of integrated quantum photonic technologies.So far,the majority of photonic devices fabricated from diamond are made from(100)-oriented crystals.In this work,we demonstrate a methodology for the fabrication of optically active membranes from(111)-oriented diamond.We use a liftoff technique to generate membranes,followed by chemical vapor deposition of diamond in the presence of silicon to generate homogenous silicon vacancy color centers with emission properties that are superior to those in(100)-oriented diamond.We further use the diamond membranes to fabricate microring resonators with quality factors exceeding^3000.Supported by finite-difference time-domain calculations,we discuss the advantages of(111)-oriented structures as building blocks for quantum nanophotonic devices.展开更多
基金the Australian Research Council(CE200100010,DP190101058,DE190100336)the Asian Office of Aerospace Research&Development(FA2386-20-1-4014)the Office of Naval Research Global(N62909-22-1-2028).
文摘Controlling and manipulating individual quantum systems in solids underpins the growing interest in the development of scalable quantum technologies.Recently,hexagonal boron nitride(hBN)has garnered significant attention in quantum photonic applications due to its ability to host optically stable quantum emitters.However,the large bandgap of hBN and the lack of efficient doping inhibits electrical triggering and limits opportunities to study the electrical control of emitters.Here,we show an approach to electrically modulate quantum emitters in an hBN-graphene van der Waals heterostructure.We show that quantum emitters in hBN can be reversibly activated and modulated by applying a bias across the device.Notably,a significant number of quantum emitters are intrinsically dark and become optically active at non-zero voltages.To explain the results,we provide a heuristic electrostatic model of this unique behavior.Finally,employing these devices we demonstrate a nearly-coherent source with linewidths of~160 MHz.Our results enhance the potential of hBN for tunable solid-state quantum emitters for the growing field of quantum information science.
基金Office of Naval Research Global(grant N62909-18-1-2025)Research and Development(grantFA2386-17-1-4064)Australian Research Council,Grant/Award Numbers:DP180100077,DP190101058。
文摘Diamond is a material of choice in the pursuit of integrated quantum photonic technologies.So far,the majority of photonic devices fabricated from diamond are made from(100)-oriented crystals.In this work,we demonstrate a methodology for the fabrication of optically active membranes from(111)-oriented diamond.We use a liftoff technique to generate membranes,followed by chemical vapor deposition of diamond in the presence of silicon to generate homogenous silicon vacancy color centers with emission properties that are superior to those in(100)-oriented diamond.We further use the diamond membranes to fabricate microring resonators with quality factors exceeding^3000.Supported by finite-difference time-domain calculations,we discuss the advantages of(111)-oriented structures as building blocks for quantum nanophotonic devices.
