SIUC Physics Seminar
School of Physics and Applied Physics, Southern Illinois University--Carbondale
2025 March 7 Friday 4:00 PM:
Physics Seminar in Neckers 440
Title: Automated Quantum Error Correction Protocols without Measurement
Speaker: Pradip Bhattarai
Affiliation: Southern Illinois University--Carbondale
Abstract:
Quantum error correction (QEC) is vital for protecting quantum information from noise and
decoherence. Traditional QEC encodes a logical qubit into physical qubits, detects errors using
ancilla qubits, and corrects errors based on the measurement outcomes of the ancilla qubits.
However, current quantum computers lack sufficient qubits for full QEC, and measurements are both
time-consuming and prone to errors. These limitations hinder the fast and effective
implementation of QEC codes on today's noisy quantum devices. Here,
we propose a novel measurement-free
error-correction protocol by employing multi-qubit gates controlled by ancilla states.
The proposed protocol was tested on IBM's Qiskit platform,
both through simulations and real quantum hardware
implementations. The circuits, including 3-, 7-, and 9-qubit codes,
demonstrated effective error correction in simulations but were less effective
on current hardware, highlighting the challenges of noisy
intermediate-scale quantum (NISQ) devices. Looking forward,
this measurement-free approach offers significant promise for quantum error correction
in future quantum systems. As hardware improves,
automated error correction protocols may enable more efficient and scalable, playing a
crucial role in fault-tolerant quantum computation.
Collaborators:
Sangchul Oh (SIUC) and Kishor T. Kapale (WIU, Macomb, IL)
Abstract submission
Last updated on
by K V Shajesh
(kvshajesh@gmail.com).