Zobrazeno 1 - 10
of 601
pro vyhledávání: '"A. Howl"'
Locality is a central notion in modern physics, but different disciplines understand it in different ways. Quantum field theory focusses on relativistic locality, enforced by microcausality, while quantum information theory focuses on subsystem local
Externí odkaz:
http://arxiv.org/abs/2305.05645
A promising route to testing quantum gravity in the laboratory is to look for gravitationally-induced entanglement (GIE) between two or more quantum matter systems. Proposals for such tests have principally used microsolid systems, with highly non-cl
Externí odkaz:
http://arxiv.org/abs/2304.00734
We discuss the physical interpretation of the gravity mediated entanglement effect. We show how to read it in terms of quantum reference systems. We pinpoint the single gravitational degree of freedom mediating the entanglement. We clarify why the di
Externí odkaz:
http://arxiv.org/abs/2207.03138
Quantum information can provide a lens for characterizing the operational implications of spacetime physics. A well-known result in this area is that quantum entanglement is degraded in the vicinity of a black hole. This result treats the black hole
Externí odkaz:
http://arxiv.org/abs/2203.05861
Autor:
Christodoulou, Marios, Di Biagio, Andrea, Aspelmeyer, Markus, Brukner, Časlav, Rovelli, Carlo, Howl, Richard
The current interest in laboratory detection of entanglement mediated by gravity was sparked by an information--theoretic argument: entanglement mediated by a local field certifies that the field is not classical. Previous derivations of the effect m
Externí odkaz:
http://arxiv.org/abs/2202.03368
Autor:
Howl, Richard, Fuentes, Ivette
We introduce a quantum interferometric scheme that uses states that are sharp in frequency and delocalized in position. The states are frequency modes of a quantum field that is trapped at all times in a finite volume potential, such as a small box p
Externí odkaz:
http://arxiv.org/abs/2103.02618
Autor:
Howl, Richard, Vedral, Vlatko, Naik, Devang, Christodoulou, Marios, Rovelli, Carlo, Iyer, Aditya
Publikováno v:
PRX Quantum 2, 010325 (2021)
Table-top tests of quantum gravity (QG) have long been thought to be practically impossible. However, remarkably, due to rapid progress in quantum information science (QIS), such tests may soon be achievable. Here, we uncover an exciting new theoreti
Externí odkaz:
http://arxiv.org/abs/2004.01189
We propose an experiment based on a Bose-Einstein condensate interferometer for strongly constraining fifth-force models. Additional scalar fields from modified gravity or higher dimensional theories may account for dark energy and the accelerating e
Externí odkaz:
http://arxiv.org/abs/1909.02272
Autor:
Howl, Richard, Fuentes, Ivette
We consider an interferometer that contains active elements, such as a parametric amplifier, with general two-mode Gaussian unitary channels rather than the usually considered phase-shift channel. We concentrate on a scheme based on the recently prop
Externí odkaz:
http://arxiv.org/abs/1902.09883
Autor:
Minton, David A., Fassett, Caleb I., Hirabayashi, Masatoshi, Howl, Bryan A., Richardson, James E.
Small craters of the lunar maria are observed to be in a state of equilibrium, in which the rate of production of new craters is, on average, equal to the rate of destruction of old craters. Crater counts of multiple lunar terrains over decades consi
Externí odkaz:
http://arxiv.org/abs/1902.07746