Probing atomic 'quantum grating' by collisions with charged projectiles
- URL: http://arxiv.org/abs/2002.09329v1
- Date: Fri, 21 Feb 2020 14:38:49 GMT
- Title: Probing atomic 'quantum grating' by collisions with charged projectiles
- Authors: S. F. Zhang, B. Najjari, X. Ma and A. B. Voitkiv
- Abstract summary: The wave function of an atom passed through a diffraction grating acquires a regular space structure.
The interaction of another particle with this atom can be thought of as scattering on a 'quantum grating' composed of a single atom.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The wave function of an atom passed through a diffraction grating acquires a
regular space structure and the interaction of another particle with this atom
can be thought of as scattering on a 'quantum grating' composed of a single
atom. Probing this 'grating' by collisions with charged projectiles reveals
interference effects due to coherent contributions of its 'slits' to the
transition amplitude. In particular, the spectra of electrons emitted from the
atom in collisions with swift ions exhibit a pronounced interference pattern
whose shape can be extremely sensitive to the collision velocity.
Related papers
- The strongly driven Fermi polaron [49.81410781350196]
Quasiparticles are emergent excitations of matter that underlie much of our understanding of quantum many-body systems.
We take advantage of the clean setting of homogeneous quantum gases and fast radio-frequency control to manipulate Fermi polarons.
We measure the decay rate and the quasiparticle residue of the driven polaron from the Rabi oscillations between the two internal states.
arXiv Detail & Related papers (2023-08-10T17:59:51Z) - Scattering of one-dimensional quantum droplets by a reflectionless
potential well [3.094089349473051]
We investigate the scattering of one-dimensional quantum droplets by a P"oschl-Teller reflectionless potential well.
We observe sharp differences between small quantum droplet scattering and large quantum droplet scattering.
arXiv Detail & Related papers (2023-05-17T05:36:33Z) - Bound state of distant photons in waveguide quantum electrodynamics [137.6408511310322]
Quantum correlations between distant particles remain enigmatic since the birth of quantum mechanics.
We predict a novel kind of bound quantum state in the simplest one-dimensional setup of two interacting particles in a box.
Such states could be realized in the waveguide quantum electrodynamics platform.
arXiv Detail & Related papers (2023-03-17T09:27:02Z) - Electromagnetically induced walking [0.0]
We show coherent periodic motion of single atoms in position space removing the Doppler broadening with strong coupling between the atom and a traveling light.
These results may have potential applications for the construction of atomtronic circuits.
arXiv Detail & Related papers (2022-02-10T03:28:02Z) - Generation of vortex particles via generalized measurements [0.0]
We show that vortex states of different particles, including hadrons, ions, and nuclei, can be generated in a large class of processes.
Thanks to entanglement and to the uncertainty relations, an evolved state of a final particle becomes twisted.
technique can be adapted for ultrarelativistic lepton and hadron beams of linear colliders.
arXiv Detail & Related papers (2022-01-20T04:31:22Z) - Production of twisted particles in heavy-ion collisions [68.8204255655161]
A prevalence of production of twisted (vortex) particles in noncentral heavy-ion collisions is shown.
Charged particles are produced in nonspreading multiwave states and have significant orbital angular momenta.
arXiv Detail & Related papers (2021-12-23T07:54:33Z) - Schr\"{o}dinger cat states of a macroscopic charged particle co-trapped
with an ion [0.0]
We investigate the feasibility of observing matter-wave interference of a micron-sized charged particle by putting it into a quantum superposition of states with a distinguishable separation.
An atomic ion is confined in a linear Paul trap along with the massive charged particle so that we can make use of the toolbox of experimental techniques developed to control quantum states of trapped ions.
arXiv Detail & Related papers (2021-11-22T23:27:13Z) - Observation-dependent suppression and enhancement of two-photon
coincidences by tailored losses [68.8204255655161]
Hong-Ou-Mandel (HOM) effect can lead to a perfect suppression of two-particle coincidences between the output ports of a balanced beam splitter.
In this work, we demonstrate experimentally that the two-particle coincidence statistics of two bosons can instead be seamlessly tuned to substantial enhancement.
Our findings reveal a new approach to harnessing non-Hermitian settings for the manipulation of multi-particle quantum states.
arXiv Detail & Related papers (2021-05-12T06:47:35Z) - Vortex beams of atoms and molecules [0.0]
We present the first vortex beams of atoms and molecules, formed by diffracting supersonic beams of helium atoms and dimers.
We observe a series of vortex rings corresponding to different OAM states in the accumulated images of particles impacting a detector.
Our results may open new frontiers in atomic physics, utilizing the additional degree of freedom of OAM to probe collisions and alter fundamental interactions.
arXiv Detail & Related papers (2021-04-29T19:11:04Z) - Quantum chaos driven by long-range waveguide-mediated interactions [125.99533416395765]
We study theoretically quantum states of a pair of photons interacting with a finite periodic array of two-level atoms in a waveguide.
Our calculation reveals two-polariton eigenstates that have a highly irregular wave-function in real space.
arXiv Detail & Related papers (2020-11-24T07:06:36Z) - 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)
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.