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Quantum Information Processing
Erschienen in: Quantum Information Processing 6/2015

01.06.2015

Realization of quantum gates with multiple control qubits or multiple target qubits in a cavity

verfasst von: Muhammad Waseem, Muhammad Irfan, Shahid Qamar

Erschienen in: Quantum Information Processing | Ausgabe 6/2015

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Abstract

We propose a scheme to realize a three-qubit controlled phase gate and a multi-qubit controlled NOT gate of one qubit simultaneously controlling n-target qubits with a four-level quantum system in a cavity. The implementation time for multi-qubit controlled NOT gate is independent of the number of qubit. Three-qubit phase gate is generalized to n-qubit phase gate with multiple control qubits. The number of steps reduces linearly as compared to conventional gate decomposition method. Our scheme can be applied to various types of physical systems such as superconducting qubits coupled to a resonator and trapped atoms in a cavity. Our scheme does not require adjustment of level spacing during the gate implementation. We also show the implementation of Deutsch–Joza algorithm. Finally, we discuss the imperfections due to cavity decay and the possibility of physical implementation of our scheme.
Vorheriger Artikel Quantum information processing in collective-rotating decoherence-free subspace
Nächster Artikel Experimental implementation of quantum information processing by Zeeman-perturbed nuclear quadrupole resonance

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Metadaten
Titel
Realization of quantum gates with multiple control qubits or multiple target qubits in a cavity
verfasst von
Muhammad Waseem
Muhammad Irfan
Shahid Qamar
Publikationsdatum
01.06.2015
Verlag
Springer US
Erschienen in
Quantum Information Processing / Ausgabe 6/2015
Print ISSN: 1570-0755
Elektronische ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-015-0947-7

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