Phys. Rev. A 71, 042327 (2005) [7 pages]

Economical phase-covariant cloning of qudits

Abstract

References

Citing Articles (34)

Download: PDF (95 kB) Buy this article Export: BibTeX or EndNote (RIS)

Francesco Buscemi^*, Giacomo Mauro D’Ariano^†, and Chiara Macchiavello^‡,§
QUIT Group, Dipartimento di Fisica “A. Volta,” Università di Pavia, via Bassi 6, I-27100 Pavia, Italy

Received 14 July 2004; published 19 April 2005

We derive the optimal N→M phase-covariant quantum cloning for equatorial states in dimension d with M=kd+N, k integer. The cloning maps are optimal for both global and single-qudit fidelity. The map is achieved by an “economical” cloning machine, which works without ancilla.

URL:

http://link.aps.org/doi/10.1103/PhysRevA.71.042327

DOI:

10.1103/PhysRevA.71.042327

PACS:

03.67.−a, 03.65.−w

^*Electronic address: buscemi@fisicavolta.unipv.it

^†Electronic address: dariano@unipv.it

^‡Electronic address: chiara@unipv.it

^§URL: http://www.qubit.it/

About | Terms and Conditions | Subscriptions | Search | Help

Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.

Citation Search:

Phys. Rev. A 71, 042327 (2005) [7 pages]

Economical phase-covariant cloning of qudits