Year: 2025
Type: article
Abstract: Various near-term quantum networking applications will benefit from low-loss, fiber-coupled photonic quantum memory devices with high efficiencies. We demonstrate a fiber-coupled loop-and-switch quantum memory platform with a pass-through efficiency of ~54% and an overall storage efficiency that scales as ~0.5 N +1 where N is the number of storage cycles. We highlight the trade-off between memory lifetime and qubit accessibility in this platform by using two different storage cycle times of ~40 ns and ~0.5 μs, and demonstrate high-fidelity storage and retrieval of ultra-broadband single-photon polarization qubits in both cases.
Source: npj Quantum Information
Authors: Sandra Cheng, Carson Evans, Todd Pittman
Institution: University of Maryland, Baltimore County
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $4,290
Awards: PURPOSE: UNIVERSITY OF MARYLAND, BALTIMORE COUNTY PROPOSES TO DEVELOP THE UMBC QUANTUM SCIENCE INSTITUTE (QSI) TO GEOGRAPHICALLY DIVERSIFY MARYLAND QUANTUM ECOSYSTEM BY ESTABLISHING A BALTIMORE-BASED QUANTUM RESEARCH INSTITUTE HOUSED AT UNIVERSITY OF MARYLAND BALTIMORE COUNTY (UMBC). ACTIVITIES TO BE PERFORMED: THE INSTITUTE WILL SUPPORT RESEARCH AND WORKFORCE DEVELOPMENT. IT INCLUDES THE DEVELOPMENT OF NEW COURSES AND PROCUREMENT OF EQUIPMENT FOR HANDS ON LEARNING. PROPOSED ACTIVITIES WILL CONTRIBUTE TO ADDRESSING ISSUES IDENTIFIED BY THE U.S. NATIONAL QUANTUM INITIATIVE FOR THE NATION TO MAINTAIN LEADERSHIP IN QIS AND RELATED TECHNOLOGIES, MOST NOTABLY THE SHORTAGE OF QUANTUM-CAPABLE WORKERS.EXPECTED OUTCOMES:EXPECTED IMPACTS OF THE PROJECT ARE DISCUSSED IN DETAIL, INCLUDING EXPANDED QIS RESEARCH ACTIVITIES, UPDATING AND PROCURING NEW EQUIPMENT, DEVELOPING COURSES AND SUPPORT GRADUATE STUDENTS. FOR EACH OF THESE IMPACTS, THE PROPOSAL INCLUDES A DESCRIPTION OF HOW OUTCOMES WILL BE IDENTIFIED AND EVALUATED, SUCH AS TRACKING RESEARCH OUTCOMES AND COMPARING METRICS FROM BEFORE AND AFTER THE IMPLEMENTATION OF THEIR PLAN.INTENDED BENEFICIARIES:THE UMBC QUANTUM SCIENCE INSTITUTE (QSI) WILL PROVIDE SCHOLARSHIPS AND ASSISTANTSHIPS FOR GRADUATE STUDENTS TO INCREASE AND DIVERSIFY THE QUANTUM WORKFORCE, INCREASE REGIONAL PUBLIC AWARENESS OF THE OPPORTUNITIES THAT ARE PRESENTED BY QIST, AND ADVANCE RESEARCH IN QUANTUM TECHNOLOGIES. SUBRECIPIENT ACTIVITIES: THE RECIPIENT DOES NOT INTEND TO SUBAWARD FUNDS., Entangled Photon Pairs on Demand
OpenAlex ID: W4415273335