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Quantum Space - Hardcover - Jim Baggott - Oxford University Press
Combining clear discussions of both quantum theory and general relativity, this book offers one of the first efforts to explain the new quantum theory of space and time.Today we are blessed with two extraordinarily successful theories of physics. The first is Albert Einstein's general theory of relativity, which describes the large-scale behaviour of matter in a curved spacetime. Combining clear discussions of both quantum theory and general relativity, this book offers one of the first efforts to explain the new quantum theory of ... [ReadMore..]
An Integrated Space-to-ground Quantum Communication Network ...
Jan 6, 2021 ... Quantum key distribution (QKD)1,2 has the potential to enable secure communication and information transfer3. [ReadMore..]
Quantum Space: Home
Quantum Space is leading the next commercial Space frontier with the development of our robotic outpost- to provide data buy services, deploy spacecraft, and perform space logistics for our partners. Feb 4, 2022 ... Quantum Space is leading the next commercial Space frontier with the development of our robotic outpost- to provide data buy services, ... [ReadMore..]
Space-Time Quantum Metasurfaces
When it's modulated by laser beams, a surface made of polarizable meta-atoms can entangle a photon's properties in multiple, controllable ways. Jul 20, 2021 ... Space-Time Quantum Metasurfaces · Wilton J. M. Kort-Kamp, Abul K. Azad, and Diego A. R. Dalvit · Phys. Rev. Lett. 127, 043603 – Published 20 July ... [ReadMore..]
Quantum Space, Quantum Time, And Relativistic Quantum Mechanics
We treat space and time as bona fide quantum degrees of freedom on an equal footing in Hilbert space. Motivated by considerations in quantum gravity, we focus on a paradigm dealing with linear, first-order Hamiltonian and momentum constraints that lead to emergent features of temporal and spatial translations. Unlike the conventional treatment, we show that Klein-Gordon and Dirac equations in relativistic quantum mechanics can be unified in our paradigm by applying relativistic dispersion relations to eigenvalues rather than treating them as operator-valued equations. With time and space being treated on an equal footing in Hilbert space, we show symmetry transformations to be implemented by unitary basis changes in Hilbert space, giving them a stronger quantum mechanical footing. Global symmetries, such as Lorentz transformations, modify the decomposition of Hilbert space; and local symmetries, such as $U(1)$ gauge symmetry are diagonal in coordinate basis and do not alter the decomposition of Hilbert space. Apr 20, 2020 ... We treat space and time as bona fide quantum degrees of freedom on an equal footing in Hilbert space. Motivated by considerations in quantum ... [ReadMore..]
The Quantum Source Of Space-time | Nature
Many physicists believe that entanglement is the essence of quantum weirdness — and some now suspect that it may also be the essence of space-time geometry. Nov 16, 2015 ... ... that entanglement is the essence of quantum weirdness — and some now suspect that it may also be the essence of space-time geometry. [ReadMore..]
New Startup Quantum Space Is Planning To Build A Robotic Outpost ...
The Moon is sure to be a hotspot of economic activity as human commercial endeavors start to expand into space. Not only is it a ball of resources with a relatively small gravity well, but it also happens to be our nearest neighbor. But to unlock that potential, companies will have to build up an … Continue reading "New Startup Quantum Space is Planning to Build a Robotic Outpost Near the Moon" Feb 8, 2022 ... They won't just stop at one spaceport, either. Quantum Space is dedicated to building spaceports at every orbit that might be potentially useful ... [ReadMore..]
Space-Time Approach To Quantum Electrodynamics
In this paper two things are done. (1) It is shown that a considerable simplification can be attained in writing down matrix elements for complex processes in electrodynamics. Further, a physical point of view is available which permits them to be written down directly for any specific problem. Being simply a restatement of conventional electrodynamics, however, the matrix elements diverge for complex processes. (2) Electrodynamics is modified by altering the interaction of electrons at short distances. All matrix elements are now finite, with the exception of those relating to problems of vacuum polarization. The latter are evaluated in a manner suggested by Pauli and Bethe, which gives finite results for these matrices also. The only effects sensitive to the modification are changes in mass and charge of the electrons. Such changes could not be directly observed. Phenomena directly observable, are insensitive to the details of the modification used (except at extreme energies). For such phenomena, a limit c Space-Time Approach to Quantum Electrodynamics · R. P. Feynman · Phys. Rev. 76, 769 – Published 15 September 1949 ... [ReadMore..]
Space Station To Host 'Self-Healing' Quantum Communications Tech ...
The NASA-funded experiment will test two technologies that could eventually enable quantum computers to communicate with each other no matter where they are located. Mar 7, 2022 ... Called the Space Entanglement and Annealing QUantum Experiment (or SEAQUE), the milk-carton-size technology demonstration will test two ... [ReadMore..]
Quantum Spatial Is Now NV5 GeoSpatial
NV5 GeoSpatial is the geospatial pioneer pushing the boundaries of data and analytics to deliver actionable intelligence for our clients. NV5 GeoSpatial is the geospatial pioneer pushing the boundaries of data and analytics to deliver actionable intelligence for our clients. [ReadMore..]
Building The Best Battery — QuantumScape
On a mission to power a lower carbon future with transformative energy storage. QuantumScape's solid-state lithium-metal batteries are efficient, reliable, safe and cost effective. QuantumScape is on a mission to transform energy storage. Our solid-state lithium- ... [ReadMore..]