Temporal teleportation with pseudo-density operators: How dynamics emerges from temporal entanglement

Journal article

open8We show that, by using temporal quantum correlations as expressed by pseudo-density operators (PDOs), it is possible to recover formally the standard quantum dynamical evolution as a sequence of teleportations in time. We demonstrate that any completely positive evolution can be formally reconstructed by teleportation with different temporally correlated states. This provides a different interpretation of maximally correlated PDOs, as resources to induce quantum time evolution. Furthermore, we note that the possibility of this protocol stems from the strict formal correspondence between spatial and temporal entanglement in quantum theory. We proceed to demonstrate experimentally this correspondence, by showing a multipartite violation of generalized temporal and spatial Bell inequalities and verifying agreement with theoretical predictions to a high degree of accuracy, in high-quality photon qubits.openMarletto, C; Vedral, V; Virzi', S; Avella, A; Piacentini, F; Gramegna, M; Degiovanni, IP; Genovese, MMarletto, C; Vedral, V; Virzi', S; Avella, A; Piacentini, F; Gramegna, M; Degiovanni, Ip; Genovese,

Authors: Marletto, C; Vedral, V; Virzì, S; Avella, A; Piacentini, F

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: American Association for the Advancement of Science
• Journal: Science Advances
• Volume: 7
• Issue: 38
• Pages: eabe4742
• Article number: eabe4742
• Publication date: 2021-09-15
• DOI: 10.1126/sciadv.abe4742
• EISSN: 2375-2548
• ISSN: 2375-2548
• Language: English
• Keywords: Teleportation; Superdense coding; Quantum teleportation; Quantum entanglement; Dynamics (music); Quantum channel; Quantum