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Scalable semiconductor quantum photonic systems
Vuckovic, Jelena - Stanford
Presentation on Thursday, Nov. 17, 2022, noon
Location: MIT CUA Room
Quantum entanglement provides a key resource for all quantum technologies, ranging from quantum computing and quantum error correction to secure quantum communication and quantum metrology. However, record sizes of maximally entangled qubit systems are still quite modest in all platforms, with at most 24 qubits entangled in a GHZ state. On the other hand, the largest quantum network consists of only 3 remotely entangled nodes.
Semiconductor platforms based on color centers (crystal defects with optical transitions that enable spin-to-photon interfaces) in wide band gap semiconductors such as diamond and silicon carbide are suitable for implementing scalable quantum systems, based on excellent spin quantum memories with direct photonic interfaces, the possibility to perform high speed and high fidelity quantum gates, combined with expertise in scaling semiconductor circuits. However, there are outstanding challenges, including color centers integration into optical structures while preserving their coherence and homogeneity, their spectral and spatial control, and implementation of efficient connections between spin qubits. New computational techniques (photonics inverse design), along with new nanofabrication approaches play a crucial role in addressing these challenges.
Biography
Jelena Vuckovic (PhD Caltech 2002) is the Jensen Huang Professor in Global Leadership in the School of Engineering, and Professor of Electrical Engineering and by courtesy of Applied Physics at Stanford, where she leads the Nanoscale and Quantum Photonics Lab. She is also the Fortinet Founders Chair of the Electrical Engineering Department at Stanford, and was the inaugural director of Q-FARM, the Stanford-SLAC Quantum Science and Engineering Initiative. Vuckovic has received many awards and honors including recently the Vannevar Bush Faculty Fellowship (2022), the Mildred Dresselhaus Lectureship from MIT (2021), the James Gordon Memorial Speakership from the OSA (2020), the IET A. F. Harvey Engineering Research Prize (2019), Distinguished Scholarship of the Max Planck Institute for Quantum Optics (2019), the Hans Fischer Senior Fellowship from the Institute for Advanced Studies in Munich (2013), and Humboldt Prize (2010). She is a Fellow of the APS, of the Optica (OSA), and of the IEEE, and an associate editor of the ACS Photonics.