Lattice Surgery for Dummies

Quantum error correction (QEC) plays a crucial role in correcting noise and paving the way for fault-tolerant quantum computing. This field has seen significant advancements, with new quantum error correction codes emerging regularly to address errors effectively. Among these, topological codes, par...

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Main Authors: Avimita Chatterjee, Subrata Das, Swaroop Ghosh
Format: Article
Language:English
Published: MDPI AG 2025-03-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/25/6/1854
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author Avimita Chatterjee
Subrata Das
Swaroop Ghosh
author_facet Avimita Chatterjee
Subrata Das
Swaroop Ghosh
author_sort Avimita Chatterjee
collection DOAJ
description Quantum error correction (QEC) plays a crucial role in correcting noise and paving the way for fault-tolerant quantum computing. This field has seen significant advancements, with new quantum error correction codes emerging regularly to address errors effectively. Among these, topological codes, particularly surface codes, stand out for their low error thresholds and feasibility for implementation in large-scale quantum computers. However, these codes are restricted to encoding a single qubit. Lattice surgery is crucial for enabling interactions among multiple encoded qubits or between the lattices of a surface code, ensuring that its sophisticated error-correcting features are maintained without significantly increasing the operational overhead. Lattice surgery is pivotal for scaling QECCs across more extensive quantum systems. Despite its critical importance, comprehending lattice surgery is challenging due to its inherent complexity, demanding a deep understanding of intricate quantum physics and mathematical concepts. This paper endeavors to demystify lattice surgery, making it accessible to those without a profound background in quantum physics or mathematics. This work explores surface codes, introduces the basics of lattice surgery, and demonstrates its application in building quantum gates and emulating multi-qubit circuits.
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spelling doaj-art-ee98a818219247688342f4697cf339d32025-08-20T03:43:40ZengMDPI AGSensors1424-82202025-03-01256185410.3390/s25061854Lattice Surgery for DummiesAvimita Chatterjee0Subrata Das1Swaroop Ghosh2Department of Computer Science & Engineering, The Pennsylvania State University, State College, PA 16801, USASchool of Electrical Engineering and Computer Science, The Pennsylvania State University, State College, PA 16802, USASchool of Electrical Engineering and Computer Science, The Pennsylvania State University, State College, PA 16802, USAQuantum error correction (QEC) plays a crucial role in correcting noise and paving the way for fault-tolerant quantum computing. This field has seen significant advancements, with new quantum error correction codes emerging regularly to address errors effectively. Among these, topological codes, particularly surface codes, stand out for their low error thresholds and feasibility for implementation in large-scale quantum computers. However, these codes are restricted to encoding a single qubit. Lattice surgery is crucial for enabling interactions among multiple encoded qubits or between the lattices of a surface code, ensuring that its sophisticated error-correcting features are maintained without significantly increasing the operational overhead. Lattice surgery is pivotal for scaling QECCs across more extensive quantum systems. Despite its critical importance, comprehending lattice surgery is challenging due to its inherent complexity, demanding a deep understanding of intricate quantum physics and mathematical concepts. This paper endeavors to demystify lattice surgery, making it accessible to those without a profound background in quantum physics or mathematics. This work explores surface codes, introduces the basics of lattice surgery, and demonstrates its application in building quantum gates and emulating multi-qubit circuits.https://www.mdpi.com/1424-8220/25/6/1854quantum error correction codes (QECCs)encodingtransversal gateslattice surgery
spellingShingle Avimita Chatterjee
Subrata Das
Swaroop Ghosh
Lattice Surgery for Dummies
Sensors
quantum error correction codes (QECCs)
encoding
transversal gates
lattice surgery
title Lattice Surgery for Dummies
title_full Lattice Surgery for Dummies
title_fullStr Lattice Surgery for Dummies
title_full_unstemmed Lattice Surgery for Dummies
title_short Lattice Surgery for Dummies
title_sort lattice surgery for dummies
topic quantum error correction codes (QECCs)
encoding
transversal gates
lattice surgery
url https://www.mdpi.com/1424-8220/25/6/1854
work_keys_str_mv AT avimitachatterjee latticesurgeryfordummies
AT subratadas latticesurgeryfordummies
AT swaroopghosh latticesurgeryfordummies