Vacuum Radiation Pressure Fluctuations on Atoms
- URL: http://arxiv.org/abs/2104.03212v1
- Date: Wed, 7 Apr 2021 16:01:17 GMT
- Title: Vacuum Radiation Pressure Fluctuations on Atoms
- Authors: L. H. Ford
- Abstract summary: Recent work has shown that stress tensor components, such as energy density or pressure, of a quantum field can be subject to large vacuum fluctuations.
This paper explores vacuum radiation pressure fluctuation on Rydberg atoms and their possible observable effects.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Recent work has shown that the stress tensor components, such as energy
density or pressure, of a quantum field can be subject to large vacuum
fluctuations. The energy density or pressure must be averaged in time before
the fluctuations can be finite, and the probability of a large fluctuation
depends upon the details of the averaging and can be much larger than that
predicted by a Gaussian distribution. This paper explores vacuum radiation
pressure fluctuation on Rydberg atoms and their possible observable effects.
The excitation and de-excitation of a Rydberg atom provide an explicit model
for the time averaging of the radiation pressure, as the atomic polarizability
becomes time dependent, first increasing and then decreasing again by several
orders of magnitude. This switched polarizability can induce large vacuum
pressure fluctuations, which can in turn temporarily transfer linear momentum
to the atom and cause a recoil which might be observable.
Related papers
- Vacuum Radiation Pressure Fluctuations on Electrons [0.0]
We treat the vacuum fluctuations of the electromagnetic energy-momentum flux operator which as been averaged in space and time.
The probability distribution of these fluctuations depends upon the details of this averaging and may allow fluctuations very large compared to the variance.
arXiv Detail & Related papers (2024-09-04T16:28:51Z) - Motional effects in dynamics of fluorescence of cold atomic ensembles
excited by resonance pulse radiation [0.0]
We show that even for sub-Doppler temperatures, the motion of atoms can significantly affect the nature of both superradiation and subradiation.
It is shown that the change in the lifetime of the given adiabatic term of the diatomic quasi-molecule induced by the change in the interatomic distance can lead not to the anticipated weakening of subradiation effect but to its enhancement.
arXiv Detail & Related papers (2023-04-28T16:43:45Z) - Motion induced excitation and electromagnetic radiation from an atom
facing a thin mirror [62.997667081978825]
We evaluate the probability of (de-)excitation and photon emission from a neutral, moving, non-relativistic atom, coupled to a quantum electromagnetic field and in the presence of a thin, perfectly conducting plane ("mirror")
Results extend to a more realistic model, where the would-be electron was described by a scalar variable, coupled to an (also scalar) vacuum field.
arXiv Detail & Related papers (2022-07-06T20:54:59Z) - Motion induced excitation and radiation from an atom facing a mirror [0.0]
We study quantum dissipative effects due to the non-relativistic, bounded, accelerated motion of a single neutral atom.
We compute the spontaneous emission rate of an oscillating atom that is initially in an excited state.
arXiv Detail & Related papers (2022-01-04T20:31:19Z) - Self-oscillating pump in a topological dissipative atom-cavity system [55.41644538483948]
We report on an emergent mechanism for pumping in a quantum gas coupled to an optical resonator.
Due to dissipation, the cavity field evolves between its two quadratures, each corresponding to a different centrosymmetric crystal configuration.
This self-oscillation results in a time-periodic potential analogous to that describing the transport of electrons in topological tight-binding models.
arXiv Detail & Related papers (2021-12-21T19:57:30Z) - Motion-induced radiation due to an atom in the presence of a graphene
plane [62.997667081978825]
We study the motion-induced radiation due to the non-relativistic motion of an atom in the presence of a static graphene plate.
We show that the effect of the plate is to increase the probability of emission when the atom is near the plate and oscillates along a direction perpendicular to it.
arXiv Detail & Related papers (2021-04-15T14:15:23Z) - Enhanced decoherence for a neutral particle sliding on a metallic
surface in vacuum [68.8204255655161]
We show that non-contact friction enhances the decoherence of the moving atom.
We suggest that measuring decoherence times through velocity dependence of coherences could indirectly demonstrate the existence of quantum friction.
arXiv Detail & Related papers (2020-11-06T17:34:35Z) - Probing thermal fluctuations through scalar test particles [0.0]
The fundamental vacuum state of quantum fields produces divergent fluctuations that must be suppressed to bring reality to the description of physical systems.
This has been addressed in the literature as subvacuum phenomenon.
A remarkable result is that temperature can even improve negative velocity fluctuations.
arXiv Detail & Related papers (2020-10-14T15:02:04Z) - Collective spontaneous emission of two entangled atoms near an
oscillating mirror [50.591267188664666]
We consider the cooperative spontaneous emission of a system of two identical atoms, interacting with the electromagnetic field in the vacuum state.
Using time-dependent theory, we investigate the spectrum of the radiation emitted by the two-atom system.
We show that it is modulated in time, and that the presence of the oscillating mirror can enhance or inhibit the decay rate.
arXiv Detail & Related papers (2020-10-07T06:48:20Z) - Gravitational waves affect vacuum entanglement [68.8204255655161]
The entanglement harvesting protocol is an operational way to probe vacuum entanglement.
Using this protocol, it is demonstrated that while the transition probability of an individual atom is unaffected by the presence of a gravitational wave, the entanglement harvested by two atoms depends sensitively on the frequency of the gravitational wave.
This suggests that the entanglement signature left by a gravitational wave may be useful in characterizing its properties, and potentially useful in exploring the gravitational-wave memory effect and gravitational-wave induced decoherence.
arXiv Detail & Related papers (2020-06-19T18:01:04Z) - Shaking photons from the vacuum: acceleration radiation from vibrating
atoms [0.0]
We show that merely by shaking the atom, in simple harmonic motion, can have the same effect.
We propose a circuit-QED potential implementation that yields transition rates of $sim 10-4,rm Hz$, which may be detectable experimentally.
arXiv Detail & Related papers (2020-03-04T18:56:46Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.