000902777 001__ 902777 000902777 005__ 20220103172046.0 000902777 0247_ $$2doi$$a10.1103/PhysRevApplied.15.064074 000902777 0247_ $$2ISSN$$a2331-7019 000902777 0247_ $$2ISSN$$a2331-7043 000902777 0247_ $$2Handle$$a2128/29149 000902777 0247_ $$2altmetric$$aaltmetric:108414739 000902777 0247_ $$2WOS$$aWOS:000670307200001 000902777 037__ $$aFZJ-2021-04548 000902777 082__ $$a530 000902777 1001_ $$0P:(DE-Juel1)176178$$aXu, Xuexin$$b0 000902777 245__ $$aZ Z Freedom in Two-Qubit Gates 000902777 260__ $$aCollege Park, Md. [u.a.]$$bAmerican Physical Society$$c2021 000902777 3367_ $$2DRIVER$$aarticle 000902777 3367_ $$2DataCite$$aOutput Types/Journal article 000902777 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1637846815_10843 000902777 3367_ $$2BibTeX$$aARTICLE 000902777 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000902777 3367_ $$00$$2EndNote$$aJournal Article 000902777 520__ $$aSuperconducting qubits on a circuit exhibit an always-on state-dependent phase error. This error is due to sub-MHz parasitic interaction that repels computational levels from noncomputational ones. We study a general theory to evaluate the “static” repulsion between seemingly idle qubits as well as the “dynamical” repulsion between entangled qubits under microwave driving gate. By combining qubits of either the same or opposite anharmonicity signs we find the characteristics of static and dynamical ZZ freedoms. The latter universally eliminate the parasitic repulsion, leading us to mitigate high-fidelity gate operation. Our theory introduces the opportunities for making perfect entangled and unentangled states, which is extremely useful for quantum technology. 000902777 536__ $$0G:(DE-HGF)POF4-5224$$a5224 - Quantum Networking (POF4-522)$$cPOF4-522$$fPOF IV$$x0 000902777 588__ $$aDataset connected to CrossRef, Journals: juser.fz-juelich.de 000902777 7001_ $$0P:(DE-Juel1)171686$$aAnsari, Mohammad$$b1$$eCorresponding author$$ufzj 000902777 773__ $$0PERI:(DE-600)2760310-6$$a10.1103/PhysRevApplied.15.064074$$gVol. 15, no. 6, p. 064074$$n6$$p064074$$tPhysical review applied$$v15$$x2331-7019$$y2021 000902777 8564_ $$uhttps://juser.fz-juelich.de/record/902777/files/PhysRevApplied.15.064074.pdf$$yOpenAccess 000902777 909CO $$ooai:juser.fz-juelich.de:902777$$pdnbdelivery$$pdriver$$pVDB$$popen_access$$popenaire 000902777 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)176178$$aForschungszentrum Jülich$$b0$$kFZJ 000902777 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)171686$$aForschungszentrum Jülich$$b1$$kFZJ 000902777 9131_ $$0G:(DE-HGF)POF4-522$$1G:(DE-HGF)POF4-520$$2G:(DE-HGF)POF4-500$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF4-5224$$aDE-HGF$$bKey Technologies$$lNatural, Artificial and Cognitive Information Processing$$vQuantum Computing$$x0 000902777 9141_ $$y2021 000902777 915__ $$0StatID:(DE-HGF)0200$$2StatID$$aDBCoverage$$bSCOPUS$$d2021-01-31 000902777 915__ $$0StatID:(DE-HGF)0300$$2StatID$$aDBCoverage$$bMedline$$d2021-01-31 000902777 915__ $$0LIC:(DE-HGF)APS-112012$$2HGFVOC$$aAmerican Physical Society Transfer of Copyright Agreement 000902777 915__ $$0StatID:(DE-HGF)0100$$2StatID$$aJCR$$bPHYS REV APPL : 2019$$d2021-01-31 000902777 915__ $$0StatID:(DE-HGF)0113$$2StatID$$aWoS$$bScience Citation Index Expanded$$d2021-01-31 000902777 915__ $$0StatID:(DE-HGF)0150$$2StatID$$aDBCoverage$$bWeb of Science Core Collection$$d2021-01-31 000902777 915__ $$0StatID:(DE-HGF)9900$$2StatID$$aIF < 5$$d2021-01-31 000902777 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess 000902777 915__ $$0StatID:(DE-HGF)1150$$2StatID$$aDBCoverage$$bCurrent Contents - Physical, Chemical and Earth Sciences$$d2021-01-31 000902777 915__ $$0StatID:(DE-HGF)0160$$2StatID$$aDBCoverage$$bEssential Science Indicators$$d2021-01-31 000902777 915__ $$0StatID:(DE-HGF)0199$$2StatID$$aDBCoverage$$bClarivate Analytics Master Journal List$$d2021-01-31 000902777 920__ $$lyes 000902777 9201_ $$0I:(DE-Juel1)PGI-2-20110106$$kPGI-2$$lTheoretische Nanoelektronik$$x0 000902777 980__ $$ajournal 000902777 980__ $$aVDB 000902777 980__ $$aUNRESTRICTED 000902777 980__ $$aI:(DE-Juel1)PGI-2-20110106 000902777 9801_ $$aFullTexts