2020/08/24 by Ioana Craiciu, Craiciu, Ioana, Mi Lei +7 · 2 citations
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Physical sciences #Photonic and Optical Devices #Quantum Physics (quant-ph) #Quantum optics and atomic interactions
paper · pdf · doi:10.48550/arxiv.2008.10795
openalex publication_date 2020/08/24 · openalex created_date 2021/11/22 · openalex updated_date 2026/07/28
Quantum networks will enable a variety of applications, from secure\ncommunication and precision measurements to distributed quantum computing.\nStoring photonic qubits and controlling their frequency, bandwidth and\nretrieval time are important functionalities in future optical quantum\nnetworks. Here we demonstrate these functions using an ensemble of erbium ions\nin yttrium orthosilicate coupled to a silicon photonic resonator and controlled\nvia on-chip electrodes. Light in the telecommunication C-band is stored,\nmanipulated and retrieved using a dynamic atomic frequency comb protocol\ncontrolled by linear DC Stark shifts of the ion ensemble's transition\nfrequencies. We demonstrate memory time control in a digital fashion in\nincrements of 50 ns, frequency shifting by more than a pulse-width (\±39\nMHz), and a bandwidth increase by a factor of three, from 6 MHz to 18 MHz.\nUsing on-chip electrodes, electric fields as high as 3 kV/cm were achieved with\na low applied bias of 5 V, making this an appealing platform for rare earth\nions, which experience Stark shifts of the order of 10 kHz/(V/cm).\n