| Texto completo | |
| Autor(es): |
Rosario, Pedro
;
Santos, Alan c.
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | EPL; v. 148, n. 4, p. 8-pg., 2024-11-01. |
| Resumo | |
- Quantum obesity (QO) is a novel function introduced to quantify quantum correlations that go beyond traditional measures like entanglement, while also functioning as an entanglement witness. One of the key strengths of QO lies in its analyticity for arbitrary states of bipartite systems, making it a more accessible and versatile tool compared to other measures of quantum correlations, such as quantum discord. In this work, we highlight the importance of QO as a fundamental quantity for identifying signatures of quantum phase transitions, which are critical changes in the ground state of quantum systems driven by quantum fluctuations. We introduce a mechanism based on local filtering operations designed to enhance the critical behavior of QO near phase transition points, providing a deeper understanding of these phenomena. Furthermore, we present a theorem that characterizes how QO transforms under local quantum operations and classical communications (LOCC), which broadens its applicability to a wider range of quantum systems. This opens new avenues for exploring quantum criticality and other novel quantum phenomena by leveraging the analytically computable, pairwise QO, thus offering both theoretical insights and practical applications in quantum information science. (AU) | |
| Processo FAPESP: | 24/05564-4 - Tomografia de sistemas multipartidos emaranhados usando estados de produto de matrizes |
| Beneficiário: | Pedro Pablo Rosario Vargas |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Doutorado Direto |
| Processo FAPESP: | 19/22685-1 - Efeito de memória e transição do regime de desordem fraco ao forte |
| Beneficiário: | Alan Costa dos Santos |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 22/12382-4 - Localização em circuitos supercondutores |
| Beneficiário: | Pedro Pablo Rosario Vargas |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado Direto |