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Title: Hybrid quantum computation
Authors: Sehrawat, A.
Zemann, D.
Englert, B.-G. 
Issue Date: 22-Feb-2011
Citation: Sehrawat, A., Zemann, D., Englert, B.-G. (2011-02-22). Hybrid quantum computation. Physical Review A - Atomic, Molecular, and Optical Physics 83 (2) : -. ScholarBank@NUS Repository.
Abstract: We present a hybrid model of the unitary-evolution-based quantum computation model and the measurement-based quantum computation model. In the hybrid model, part of a quantum circuit is simulated by unitary evolution and the rest by measurements on star graph states, thereby combining the advantages of the two standard quantum computation models. In the hybrid model, a complicated unitary gate under simulation is decomposed in terms of a sequence of single-qubit operations, the controlled-z gates, and multiqubit rotations around the z axis. Every single-qubit and the controlled-z gate are realized by a respective unitary evolution, and every multiqubit rotation is executed by a single measurement on a required star graph state. The classical information processing in our model requires only an information flow vector and propagation matrices. We provide the implementation of multicontrol gates in the hybrid model. They are very useful for implementing Grover's search algorithm, which is studied as an illustrative example. © 2011 American Physical Society.
Source Title: Physical Review A - Atomic, Molecular, and Optical Physics
ISSN: 10502947
DOI: 10.1103/PhysRevA.83.022317
Appears in Collections:Staff Publications

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