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20. Juli 2021 · Here, we introduce the concept of space-time quantum metasurfaces for arbitrary control of the spectral, spatial, and spin properties of nonclassical light using a compact photonic platform. We show that space-time quantum metasurfaces allow on-demand tailoring of entanglement among all degrees of freedom of a single photon.
7. Okt. 2022 · We investigate the entanglement dynamics for a quantum system composed of two uniformly accelerated Unruh-DeWitt detectors in different spacetime dimensions. It is found that the range of parameters in which entanglement can be generated is shrunk and the amount of generated entanglement is also decreased with the increasing spacetime dimension, by calculating the evolution of two-atom states ...
13. Sept. 2022 · Entanglement is a purely quantum-mechanical phenomenon, whereby two or more particles can have a closer relationship than is allowed by classical physics. It means that if we determine the state of one of particle, it instantaneously fixes the quantum state of the other (s), no matter how near or far they may be.
1. Feb. 2021 · We use Doreen Massey’s. idea of space-time trajectories to analyze and illustrate how. in qualitative disaster studies the trajectories of the disaster, research participants, and the researcher ...
9. März 2022 · Entanglement entropy in spacetime duals of Haar-random circuits. (a) Schematic of a finite subsystem at the edge of a semi-infinite system: The entropy calculation maps to random-walk survival probability (the starting point is pinned to the entanglement cut; the end point is free). (b) Numerical results for the entropy confirm the analytical prediction: a volume-law term
13. Aug. 2020 · I first motivate the RT formula by comparing it in Sect. 2.1 with a formula due to Srednicki ( 1993 ), according to which the entanglement entropy of a massless scalar field with respect to a spherical region of spacetime is a function of the area of the region’s bounding surface. Srednicki’s formula was applied by Levin and Wen ( 2006 ...
29. Okt. 2023 · The ICQFT unifies matter and spacetime (gravity) as information via spacetime-matter entanglement, which encodes complete physical predictions of the theory and leads to a compelling solution to the problem of time. We consider two particular forms of spacetime-matter entangled states and their physical consequences.
