Adding control to arbitrary unknown quantum operations

Xiao Qi Zhou, Timothy C. Ralph, Pruet Kalasuwan, Mian Zhang, Alberto Peruzzo, Benjamin P. Lanyon, Jeremy L. O'Brien

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

Although quantum computers promise significant advantages, the complexity of quantum algorithms remains a major technological obstacle. We have developed and demonstrated an architecture-independent technique that simplifies adding control qubits to arbitrary quantum operations - a requirement in many quantum algorithms, simulations and metrology. The technique, which is independent of how the operation is done, does not require knowledge of what the operation is, and largely separates the problems of how to implement a quantum operation in the laboratory and how to add a control. Here, we demonstrate an entanglement-based version in a photonic system, realizing a range of different two-qubit gates with high fidelity.

Original languageEnglish
Article number413
JournalNature Communications
Volume2
Issue number1
DOIs
Publication statusPublished - 11 Aug 2011
Externally publishedYes

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Optics and Photonics
Quantum computers
Photonics
quantum computers
metrology
photonics
requirements
simulation

Cite this

Zhou, X. Q., Ralph, T. C., Kalasuwan, P., Zhang, M., Peruzzo, A., Lanyon, B. P., & O'Brien, J. L. (2011). Adding control to arbitrary unknown quantum operations. Nature Communications, 2(1), [413]. https://doi.org/10.1038/ncomms1392
Zhou, Xiao Qi ; Ralph, Timothy C. ; Kalasuwan, Pruet ; Zhang, Mian ; Peruzzo, Alberto ; Lanyon, Benjamin P. ; O'Brien, Jeremy L. / Adding control to arbitrary unknown quantum operations. In: Nature Communications. 2011 ; Vol. 2, No. 1.
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Zhou, XQ, Ralph, TC, Kalasuwan, P, Zhang, M, Peruzzo, A, Lanyon, BP & O'Brien, JL 2011, 'Adding control to arbitrary unknown quantum operations' Nature Communications, vol. 2, no. 1, 413. https://doi.org/10.1038/ncomms1392

Adding control to arbitrary unknown quantum operations. / Zhou, Xiao Qi; Ralph, Timothy C.; Kalasuwan, Pruet; Zhang, Mian; Peruzzo, Alberto; Lanyon, Benjamin P.; O'Brien, Jeremy L.

In: Nature Communications, Vol. 2, No. 1, 413, 11.08.2011.

Research output: Contribution to journalArticle

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Zhou XQ, Ralph TC, Kalasuwan P, Zhang M, Peruzzo A, Lanyon BP et al. Adding control to arbitrary unknown quantum operations. Nature Communications. 2011 Aug 11;2(1). 413. https://doi.org/10.1038/ncomms1392