What are Surface Codes | QuEra
Discover how logical qubits, when formed correctly using surface codes, exhibit lower error rates and extended coherence times compared to their individual physical counterparts. Learn how two-dimensional grids of physical qubits, alternating between data and measurement qubits, serve as the foundation for constructing logical qubits.
Explore the intricate connectivity between data and measurement qubits, where measurement qubits detect errors on neighboring data qubits without disturbing the quantum information. Witness how classical computation facilitates error detection and corrective operations on errant data qubits, ensuring the resilience of surface codes against bit-flip and phase-flip errors.
While surface codes demonstrate robust error correction capabilities, they entail a significant overhead in terms of physical qubits per logical qubit, posing practical limitations, especially for certain architectures like neutral atoms.
Join us as we unravel the complexities of surface codes, understanding their strengths and limitations in quantum error correction. Thank you for tuning in to QuEra's Quantum Capsule on the basics of surface codes. Explore our other capsule videos for deeper insights into quantum technology.
Chapters of this video:
00:02 - Introduction to Surface Codes
00:20 - Forming Logical Qubits with Surface Codes
00:43 - Data and Measurement Qubit Interconnections
01:06 - Robustness of Surface Codes Against Errors
01:27 - Efficiency and Practicality Challenges
Learn more here: https://www.quera.com/glossary/surfac...
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