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1. #Quantum error correction with superconducting qubits code
2. #Quantum error correction with superconducting qubits simulator

QEC needs to be very power-efficient since the power budget is limited inside of a dilution refrigerator for superconducting qubits by which one of the most successful quantum computers (QCs) is built.

#Quantum error correction with superconducting qubits code

Surface code (SC) associated with its decoding algorithm is one of the most promising quantum error correction (QEC) methods.

#Quantum error correction with superconducting qubits simulator

Our decoder is simulated on a quantum error simulator for code distances 5 to 13 and achieves a 1.0% accuracy threshold.ĪB - Due to the low error tolerance of a qubit, detecting and correcting errors on it is essential for fault-tolerant quantum computing. Each logic element is composed of about 3000 Josephson junctions and power consumption is about 2.78 μW when operating with 2 GHz clock frequency which meets the required decoding speed. We design a key building block of the proposed hardware with an SFQ cell library and evaluate it by the SPICE-level simulation. In this paper, we propose an online-QEC algorithm and its hardware implementation with SFQ based superconducting digital circuits.

N2 - Due to the low error tolerance of a qubit, detecting and correcting errors on it is essential for fault-tolerant quantum computing. T2 - 58th ACM/IEEE Design Automation Conference, DAC 2021ĪCKNOWLEDGEMENTS This work was supported by JST Mirai Program Grant Number JPMJMI18E1, JST CREST Grant Number JPMJCR18K1, JST PRESTO Grant Number JPMJPR1916, JST ERATO Grant Number JPMJER1601, and MEXT Quantum Leap Flagship Program Grant Numbers JPMXS0120319794, JPMXS0118068682. Our decoder is simulated on a quantum error simulator for code distances 5 to 13 and achieves a 1.0% accuracy threshold.", Our decoder is simulated on a quantum error simulator for code distances 5 to 13 and achieves a 1.0% accuracy threshold.Ībstract = "Due to the low error tolerance of a qubit, detecting and correcting errors on it is essential for fault-tolerant quantum computing. Due to the low error tolerance of a qubit, detecting and correcting errors on it is essential for fault-tolerant quantum computing.