| Texto completo | |
| Autor(es): |
Correa, Willian H. G.
;
Lami, Ludovico
;
Palazuelos, Carlos
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | IEEE TRANSACTIONS ON INFORMATION THEORY; v. 68, n. 11, p. 9-pg., 2022-11-01. |
| Resumo | |
We prove a tight and close-to-optimal lower bound on the effectiveness of local quantum measurements (without classical communication) at discriminating any two bipartite quantum states. Our result implies, for example, that any two orthogonal quantum states of a n(A) x n(B) bipartite quantum system can be discriminated via local measurements with an error probability no larger than 1/2 (1 - 1/c min{nA,nB}), where 1 <= c <= 2 root 2 is a universal constant, and our bound scales provably optimally with the local dimensions n(A), n(B). Mathematically, this is achieved by showing that the distinguishability norm parallel to . parallel to LO associated with local measurements satisfies that parallel to . parallel to <= 2 root 2 min{n(A), n(B)} parallel to.parallel to LO, where parallel to . parallel to LO, where parallel to.parallel to(1) is the trace norm. (AU) | |
| Processo FAPESP: | 16/25574-8 - Geometria dos espaços de Banach |
| Beneficiário: | Valentin Raphael Henri Ferenczi |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 19/09205-0 - Aplicações de Análise Funcional à Teoria da Informação Quântica |
| Beneficiário: | Willian Hans Goes Corrêa |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado |
| Processo FAPESP: | 18/03765-1 - Hilberts torcidos e complexidade em espaços de Banach |
| Beneficiário: | Willian Hans Goes Corrêa |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |