Improved ancilla preparation scheme increases fault-tolerant threshold

Abstract

We demonstrate an improved concatenated encoded ancilla preparation procedure. Simulations show that this procedure significantly increases the error threshold beneath which arbitrarily long quantum computations are possible.

4 pages, 7 figures

References in corpus (5)

• Improved Simulation of Stabilizer Circuits
• Overhead and noise threshold of fault-tolerant quantum error correction
• Fault-Tolerant Postselected Quantum Computation: Threshold Analysis
• Threshold Estimate for Fault Tolerant Quantum Computation
• Fast fault-tolerant filtering of quantum codewords

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• Serialized Quantum Error Correction Protocol for High-Bandwidth Quantum Repeaters
• Precision characterisation of two-qubit Hamiltonians via entanglement mapping
• Towards Large-Scale Quantum Computation
• Fault-Tolerant Thresholds for Encoded Ancillae with Homogeneous Errors
• Fault-tolerant ancilla preparation and noise threshold lower bounds for the 23-qubit Golay code
• Postselection threshold against biased noise
• Error Channels and the Threshold for Fault-tolerant Quantum Computation
• A flow-map model for analyzing pseudothresholds in fault-tolerant quantum computing