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IQIM Postdoctoral and Graduate Student Seminar

Friday, February 24, 2023
12:00pm to 1:00pm
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East Bridge 114
Quantum computing over the rainbow: from scalable qumodes to scalable Gottesman-Kitaev-Preskill qubits
Olivier Pfister, University of Virginia,

Abstract: Photonic quantum computing presents a viable path to fault-tolerant quantum computing. I will present our endeavor and results toward this goal, using the paradigm of measurement-based quantum computing. Working the quantum optics of the multitude of resonant cavity (qu)modes of an optical parametric oscillator, we have generated cluster entangled states with 60 characterized qumodes (out of 10000 likely present) and shown that scalable hypercubic cluster states can be generated with relatively scarce experimental resources, such as one OPO and one electro-optic modulator. Finally, I will show that judicious use of photon-number-resolving detection enables us to leverage the massive scalability of these Gaussian continuous-variable cluster states by de-Gaussifying them into identical cluster states of Gottesman-Kitaev-Preskill qubits, paving the way to foliated topological error codes.

Lunch will be provided, following the talk, on the lawn north of the Bridge Arcade

Attendees joining in person must demonstrate that they comply with Caltech's vaccination requirements (present Caltech ID or AWS ID or vaccination and booster confirmation).

For more information, please contact Marcia Brown by phone at 626-395-4013 or by email at [email protected].