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Control and distribution of entanglement in quantum networks

Sophia Economou


Quantum networks are pursued as a quantum backbone on which to perform secure quantum communications, distributed quantum sensing, and blind quantum computation. The building blocks of these networks are quantum repeaters, where photonic quantum information carriers are generated and error corrected through interactions with matter qubits. I will describe two paradigms of quantum repeaters and discuss in each case how careful control of a register of spin qubits can increase the entanglement distribution rate over the network. Specifically, I will describe our recent work on the accurate and fast control of nuclear spin memory qubits coupled to spin defects such as the NV center in diamond. I will also discuss the deterministic generation of photonic ‘graph’ states from such quantum emitters. 


Sophia Economou is a Professor of Physics and the T. Marshall Hahn Chair in Physics at Virginia Tech. She obtained her PhD in Physics from the University of California, San Diego in 2006. She focuses on theoretical research in quantum information science, including quantum computing, quantum communications, and quantum simulation algorithms. She is also the founding director of VTQ, the Virginia Tech Center for Quantum Information Science and Engineering.

Sophia Economou Headshot
Sophia Economou
Virginia Tech
ECE 125
16 May 2023, 10:30am until 11:30am