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Quantum Information Processing
Erschienen in: Quantum Information Processing 1/2020

01.01.2020

Multiphoton process in cavity QED photons for implementing a three-qubit quantum gate operation

verfasst von: Moteb M. Alqahtani

Erschienen in: Quantum Information Processing | Ausgabe 1/2020

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Abstract

Based on cavity QED of free atoms, we theoretically investigate the implementation of a three-qubit quantum phase gate in which the three qubits are represented by the photons in modes of the cavity. A single four-level atom in double-V type passing through the high-Q cavity is used to implement the gate. We apply the theory of multiphoton resonance and use two-level effective Hamiltonians to predict the proper values for detunings, coupling constants, and interaction times. By the use of both the density matrix approach and wave function method, the influence of the decoherence processes is theoretically and numerically analyzed. Further, we address the effects of deviation in detunings and coupling coefficients and find that the gate operation is substantially insensitive to such variations. Finally, we show that the proposed scheme here can be extended for the implementation of multiqubit quantum phase gates.
Vorheriger Artikel Optically controlled quantum gates for three spin qubits in quantum dot–microcavity coupled systems
Nächster Artikel Foundation of quantum optimal transport and applications

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Metadaten
Titel
Multiphoton process in cavity QED photons for implementing a three-qubit quantum gate operation
verfasst von
Moteb M. Alqahtani
Publikationsdatum
01.01.2020
Verlag
Springer US
Erschienen in
Quantum Information Processing / Ausgabe 1/2020
Print ISSN: 1570-0755
Elektronische ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-019-2498-9

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