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Wednesday, September 22, 2021
11:00 AM - 12:00 PM
Online Event

IQIM Postdoctoral and Graduate Student Seminar

Practical quantum error correction with biased noise qubits and XZZX code
Shruti Puri, Assistant Professor of Applied Physics, Yale,

Joint IQIM/AWS Seminar Series

Abstract: Scalable, fault-tolerant (FT) quantum error correction (QEC) remains a daunting task because of challenging threshold requirements and significant resource cost of quantum hardware and classical systems control. A particularly resource-heavy subroutine used in several QEC codes is called magic-state distillation (MSD). Considering the physical error rates of first-generation quantum devices, the overhead costs for MSD can completely overwhelm the quantum advantage promised otherwise. In this talk I will show how native gate operations available in a qubit architecture that experience biased-noise can be leveraged in the XZZX surface-code for high-threshold, low-overhead FT QEC. In particular, I will discuss a new noise-aware protocol for high-fidelity preparation of input states used in MSD. With this protocol we are able to significantly reduce the resource cost of MSD with modest system requirements, bringing us a step closer to achieve practical quantum computing with system parameters that are within reach of current experiments.

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