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005     20230123101907.0
037 _ _ |a FZJ-2023-00055
100 1 _ |a Xu, Xuexin
|0 P:(DE-Juel1)176178
|b 0
|e Corresponding author
|u fzj
111 2 _ |a WE-Heraeus-Seminar / Hybrid Solid State Quantum Circuits, Sensors, and Metrology
|c Online-Seminar
|d 2021-12-13 - 2021-12-16
|w Germany
245 _ _ |a Mitigating parasitic interactions in superconducting circuits
260 _ _ |c 2021
336 7 _ |a Conference Paper
|0 33
|2 EndNote
336 7 _ |a Other
|2 DataCite
336 7 _ |a INPROCEEDINGS
|2 BibTeX
336 7 _ |a conferenceObject
|2 DRIVER
336 7 _ |a LECTURE_SPEECH
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336 7 _ |a Conference Presentation
|b conf
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|0 PUB:(DE-HGF)6
|s 1672815779_11107
|2 PUB:(DE-HGF)
|x Invited
520 _ _ |a Implementation of high-performance two-qubit gates is a key factor for scalable quantum computation. However, the state-of-the-art superconducting two-qubit gates are yet far from being perfect due to the parasitic ZZ coupling. In this poster, we introduce a general theory to evaluate the “static” ZZ interaction between seemingly idle qubits [1] as well as the “dynamical” ZZ interaction between driving entangled qubits, and find the characteristics of both static and dynamical ZZ freedoms [2]. Moreover, we demonstrate the two freedoms can be realized in one circuit with a tunable coupler so as to eliminate ZZ interaction throughout gate operations [3]. Our theory shows that using these methods the fidelity of a CR gate is able to achieve the coherence limit.References[1] J. Ku, X. Xu, M. Brink, D. C. McKay, J. B. Hertzberg, M. H. Ansari, B. L. T Plourde, Suppression of unwanted ZZ interactions in a hybrid two-qubit system. Physical Review Letters 125, 200504 (2020)[2] X. Xu and M. H. Ansari, ZZ freedom in two-qubit gates. Physical Review Applied 15, 064074 (2021)[3] X. Xu and M. H. Ansari, Parasitic free gates. In preparation
536 _ _ |a 5224 - Quantum Networking (POF4-522)
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|f POF IV
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700 1 _ |a Ansari, Mohammad
|0 P:(DE-Juel1)171686
|b 1
|u fzj
909 C O |o oai:juser.fz-juelich.de:916715
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910 1 _ |a Forschungszentrum Jülich
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910 1 _ |a Forschungszentrum Jülich
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913 1 _ |a DE-HGF
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|v Quantum Computing
|9 G:(DE-HGF)POF4-5224
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914 1 _ |y 2022
920 _ _ |l yes
920 1 _ |0 I:(DE-Juel1)PGI-2-20110106
|k PGI-2
|l Theoretische Nanoelektronik
|x 0
980 _ _ |a conf
980 _ _ |a VDB
980 _ _ |a I:(DE-Juel1)PGI-2-20110106
980 _ _ |a UNRESTRICTED


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