Functional quantum computing: An optical approach

Timothy M. Rambo, Joseph B. Altepeter, Prem Kumar, G. Mauro D'Ariano

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Recent theoretical investigations treat quantum computations as functions, quantum processes which operate on other quantum processes, rather than circuits. Much attention has been given to the N-switch function which takes N black-box quantum operators as input, coherently permutes their ordering, and applies the result to a target quantum state. This is something which cannot be equivalently done using a quantum circuit. Here, we propose an all-optical system design which implements coherent operator permutation for an arbitrary number of input operators.

Original languageEnglish (US)
Article number052321
JournalPhysical Review A
Issue number5
StatePublished - May 18 2016

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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