Non-local quantum gates: a cavity-quantum-electrodynamics implementation

Mauro Paternostro, Myungshik Kim, G.M. Palma

Research output: Contribution to journalArticle

35 Citations (Scopus)


The problems related to the management of large quantum registers could be handled in the context of distributed quantum computation: unitary non-local transformations among spatially separated local processors are realized performing local unitary transformations and exchanging classical communication. In this paper, a scheme is proposed for the implementation of universal non-local quantum gates such as a controlled NOT (CNOT) and a controlled quantum phase gate (CQPG). The system chosen for their physical implementation is a cavity-quantum-electrodynamics (CQED) system formed by two spatially separated microwave cavities and two trapped Rydberg atoms. The procedures to follow for the realization of each step necessary to perform a specific non-local operation are described.
Original languageEnglish
Pages (from-to)2075-2094
Number of pages20
JournalJournal of Modern Optics
Issue number13
Publication statusPublished - 10 Sep 2003

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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