TY - JOUR
T1 - Path-Independent Quantum Gates with Noisy Ancilla
AU - Ma, Wen-Long
AU - Zhang, Mengzhen
AU - Wong, Yat
AU - Noh, Kyungjoo
AU - Rosenblum, Serge
AU - Reinhold, Philip
AU - Schoelkopf, Robert J.
AU - Jiang, Liang
N1 - We thank Chang-Ling Zou, Stefan Krastanov, Changchun Zhong, Sisi Zhou, Connor Hann, Linshu Li, and Chiao-Hsuan Wang for helpful discussions. We acknowledge support from the ARO (Grants No. W911NF-18-1-0020 and No. W911NF-18-1-0212), ARL-CDQI (Grant No. W911NF-15-2-0067), ARO MURI (Grant No. W911NF-16-1-0349), AFOSR MURI (Grants No. FA9550-15-1-0015 and No. FA9550-19-1-0399), DOE (Grant No. DE-SC0019406), NSF (Grants No. EFMA-1640959 and No. OMA-1936118), and the Packard Foundation (Grant No. 2013-39273).
PY - 2020/9/9
Y1 - 2020/9/9
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85091807747&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.125.110503
DO - 10.1103/PhysRevLett.125.110503
M3 - مقالة
SN - 0031-9007
VL - 125
JO - Physical review letters
JF - Physical review letters
IS - 11
M1 - 110503
ER -