Joint IQIM/AWS Seminar Series

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.
Primarily based on https://arxiv.org/abs/2303.16122

***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).