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Enhancing Extractable Quantum Entropy in Vacuum-Based Quantum Random Number Generator [PDF]

open access: yesEntropy, 2018
Information-theoretically provable unique true random numbers, which cannot be correlated or controlled by an attacker, can be generated based on quantum measurement of vacuum state and universal-hashing randomness extraction.
Xiaomin Guo   +5 more
doaj   +4 more sources

Superradiance in Quantum Vacuum [PDF]

open access: yesQuantum Reports, 2021
A new process associated with the nonlinear optical properties of the electromagnetic quantum vacuum is described. It corresponds to the superradiant emission of photons, resulting from the interaction of an intense laser pulse with frequency ω0 with a ...
José Tito Mendonça
doaj   +2 more sources

Experimentally separating vacuum fluctuations from source radiation [PDF]

open access: yesNature Communications
The distinction between vacuum-field and source-radiation effects in phenomena such as the Lamb shift, Casimir forces, and spontaneous emission relies on additional assumptions at the theoretical level, and an experimental approach was never considered ...
Alexa Herter   +4 more
doaj   +2 more sources

Shaping the quantum vacuum with anisotropic temporal boundaries [PDF]

open access: yesNanophotonics, 2023
J Enrique Vázquez-Lozano   +1 more
exaly   +2 more sources

Quantum Vacuum Sagnac Effect [PDF]

open access: yesPhysical Review Letters, 2021
We report on the quantum electrodynamical analogue of a Sagnac phase induced by the fast rotation of a neutral nanoparticle onto atomic waves propagating in its vicinity. The quantum vacuum Sagnac phase is a geometric Berry phase proportional to the angular velocity of rotation.
Guilherme C. Matos   +3 more
openaire   +3 more sources

Design of optically pumped cesium beam tube with hexapole magnetic system for longer lifetime and better SNR

open access: yesFrontiers in Physics, 2022
In order to get a better tradeoff between the long lifetime and high performances of cesium beam atomic clocks, we proposed a design scheme of compact optically pumped cesium beam tube (OPCBT) based on hexapole magnetic focusing (HMF) system for the ...
Haijun Chen   +3 more
doaj   +1 more source

Organic Optoelectronic Synapses for Sound Perception

open access: yesNano-Micro Letters, 2023
Highlights The organic optoelectronic synapse achieves unprecedented sound perception on volume, tone and timbre simultaneously. The quantitative relationship between the interfacial layers and synaptic performances is clarified.
Yanan Wei   +9 more
doaj   +1 more source

A molecular descriptor of intramolecular noncovalent interaction for regulating optoelectronic properties of organic semiconductors

open access: yesNature Communications, 2023
In recent years, intramolecular noncovalent interaction has become an important means to modulate the optoelectronic performances of organic/polymeric semiconductors. However, it lacks a deep understanding and a direct quantitative relationship among the
Meihui Liu   +4 more
doaj   +1 more source

Improving approximate vacuum prepared by the adiabatic quantum computation

open access: yesIET Quantum Communication, 2022
According to the quantum adiabatic theorem, we can in principle obtain a true vacuum of a quantum system starting from a trivial vacuum of a simple Hamiltonian.
Kazuto Oshima
doaj   +1 more source

Topological features of the quantum vacuum [PDF]

open access: yesPhysical Review D, 2020
A central aspect of the cosmological constant problem is to understand why vacuum energy does not gravitate. In order to account for this observation, while allowing for nontrivial dynamics of the quantum vacuum, we motivate a novel background independent theory of gravity. The theory is an extension of unimodular gravity that is described in geometric
Alexander, Stephon   +1 more
openaire   +2 more sources

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