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Article: Efficient Quantum Compression for Ensembles of Identically Prepared Mixed States

TitleEfficient Quantum Compression for Ensembles of Identically Prepared Mixed States
Authors
Issue Date2016
PublisherAmerican Physical Society. The Journal's web site is located at http://prl.aps.org
Citation
Physical Review Letters, 2016, v. 116 n. 8, article no. 080501 How to Cite?
AbstractWe present one-shot compression protocols that optimally encode ensembles of N identically prepared mixed states into O(logN) qubits. In contrast to the case of pure-state ensembles, we find that the number of encoding qubits drops down discontinuously as soon as a nonzero error is tolerated and the spectrum of the states is known with sufficient precision. For qubit ensembles, this feature leads to a 25% saving of memory space. Our compression protocols can be implemented efficiently on a quantum computer.
Persistent Identifierhttp://hdl.handle.net/10722/230203
ISSN
2023 Impact Factor: 8.1
2023 SCImago Journal Rankings: 3.040
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYang, Y-
dc.contributor.authorChiribella, G-
dc.contributor.authorEbler, D-
dc.date.accessioned2016-08-23T14:15:42Z-
dc.date.available2016-08-23T14:15:42Z-
dc.date.issued2016-
dc.identifier.citationPhysical Review Letters, 2016, v. 116 n. 8, article no. 080501-
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/10722/230203-
dc.description.abstractWe present one-shot compression protocols that optimally encode ensembles of N identically prepared mixed states into O(logN) qubits. In contrast to the case of pure-state ensembles, we find that the number of encoding qubits drops down discontinuously as soon as a nonzero error is tolerated and the spectrum of the states is known with sufficient precision. For qubit ensembles, this feature leads to a 25% saving of memory space. Our compression protocols can be implemented efficiently on a quantum computer.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prl.aps.org-
dc.relation.ispartofPhysical Review Letters-
dc.rightsCopyright 2016 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevLett.116.080501-
dc.titleEfficient Quantum Compression for Ensembles of Identically Prepared Mixed States-
dc.typeArticle-
dc.identifier.emailChiribella, G: giulio@hku.hk-
dc.identifier.authorityChiribella, G=rp02035-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevLett.116.080501-
dc.identifier.pmid26967400-
dc.identifier.scopuseid_2-s2.0-84959432946-
dc.identifier.hkuros259988-
dc.identifier.volume116-
dc.identifier.issue8-
dc.identifier.spagearticle no. 080501-
dc.identifier.epagearticle no. 080501-
dc.identifier.isiWOS:000370815100002-
dc.publisher.placeUnited States-
dc.identifier.issnl0031-9007-

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