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dc.contributor.authorZhou, Zhongyuan
dc.contributor.authorChu, Shih-I
dc.contributor.authorHan, Siyuan
dc.date.accessioned2014-12-04T18:02:00Z
dc.date.available2014-12-04T18:02:00Z
dc.date.issued2006-03-30
dc.identifier.citationZhou, Zhongyuan., Chu, Shih-I., Han, Siyuan. "Unified approach for universal quantum gates in a coupled superconducting two-qubit system with fixed always-on coupling." Phys. Rev. B 73, 104521 – Published 30 March 2006. http://dx.doi.org/10.1103/PhysRevB.73.104521.
dc.identifier.urihttp://hdl.handle.net/1808/16036
dc.descriptionThis is the published version, also available here: http://dx.doi.org/10.1103/PhysRevB.73.104521.
dc.description.abstractWe demonstrate that in a coupled two-qubit system any single-qubit gate can be decomposed into ∣0⟩-controlled and ∣1⟩-controlled two-qubit gates which can be implemented by manipulations analogous to that used for a controlled NOT (CNOT) gate. Based on this we present a unified approach to implement universal single-qubit and two-qubit gates in a coupled two-qubit system with fixed always-on coupling. This approach requires neither supplementary circuit or additional physical qubits to control the coupling nor extra hardware to adjust the energy level structure. The feasibility of this approach is demonstrated by numerical simulation of single-qubit gates and creation of two-qubit Bell states in rf-driven inductively coupled two superconducting quantum interference device flux qubits with realistic device parameters and constant always-on coupling.
dc.publisherAmerican Physical Society
dc.titleUnified approach for universal quantum gates in a coupled superconducting two-qubit system with fixed always-on coupling
dc.typeArticle
kusw.kuauthorZhou, Zhongyuan
kusw.kuauthorChu, Shih-I
kusw.kuauthorHan, Siyuan
kusw.kudepartmentPhysics and Astronomy
kusw.kudepartmentChemistry
dc.identifier.doi10.1103/PhysRevB.73.104521
kusw.oaversionScholarly/refereed, publisher version
kusw.oapolicyThis item does not meet KU Open Access policy criteria.
dc.rights.accessrightsopenAccess


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