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Joint IQIM/AWS Seminar Series

Wednesday, May 24, 2023
11:00am to 12:00pm
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East Bridge 114
Using dynamic bias arrangement to handle the idiosyncrasies of photonic quantum computing
Mihir Pant, PsiQuantum,
Naomi Nickerson, PsiQuantum,

Abstract: Photonics has several advantages as a physical platform for quantum computing including low stochastic noise, easy transport of qubits with optical fiber, fast measurements, and scalable manufacturing in foundries. However, photonic quantum computing does not have traditional gates; entangling operations are probabilistic and destructive. In this talk, we describe a fault-tolerant architecture that handles these peculiarities. In particular, we present a scheme called "dynamic bias arrangement" that improves error tolerance using classical decision-making to adaptively choose the bias in measurements as a fault tolerance protocol proceeds. In an example from photonic quantum computing, this technique triples loss tolerance compared to static methods of bias arrangement, that have been studied in previous works, from 2.7% to 7.5%. While the method is motivated by the bias that naturally arises from the probabilistic nature of photonic measurements, dynamic bias arrangement can be used to improve error tolerance in other physical systems where errors can be biased in multiple ways.
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***Please note the May 24 Seminar will be held in 114 E. Bridge.

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].