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Trapped Ion Quantum Computing Superconducting Qubits

Path-Independent Quantum Gates with Noisy Ancilla

arXiv
Authors: Wen-Long Ma, Mengzhen Zhang, Yat Wong, Kyungjoo Noh, Serge Rosenblum, Philip Reinhold, Robert J. Schoelkopf, Liang Jiang

Year

2019

Paper ID

14497

Status

Preprint

Abstract Read

~2 min

Abstract Words

93

Citations

N/A

Abstract

Ancilla systems are often indispensable to universal control of a nearly isolated quantum system. However, ancilla systems are typically more vulnerable to environmental noise, which limits the performance of such ancilla-assisted quantum control. To address this challenge of ancilla-induced decoherence, we propose a general framework that integrates quantum control and quantum error correction, so that we can achieve robust quantum gates resilient to ancilla noise. We introduce the path independence criterion for fault-tolerant quantum gates against ancilla errors. As an example, a path-independent gate is provided for superconducting circuits with a hardware-efficient design.

Why This Paper Matters

  • This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
  • It adds a 2019 reference point for readers tracking recent quantum research.
  • Ancilla systems are often indispensable to universal control of a nearly isolated quantum system.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1911.12240 [2] arXiv https://arxiv.org/abs/1911.12240 [3] Publisher https://arxiv.org/abs/1911.12240

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