Constructive Quantum Interference in a Photo-Chemical Reaction of $^{87}$Rb Bose Einstein Condensate

• URL: http://arxiv.org/abs/2107.05441v1
• Date: Tue, 6 Jul 2021 23:24:56 GMT
• Title: Constructive Quantum Interference in a Photo-Chemical Reaction of $^{87}$Rb Bose Einstein Condensate
• Authors: Sumit Suresh Kale, Yong P. Chen and Sabre Kais
• Abstract summary: Interferences emerge when multiple pathways coexist together leading towards the same result. Our results show that interferences can be used as a resource for the coherent control of photo-chemical reactions.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Interferences emerge when multiple pathways coexist together leading towards the same result. A Recent study by Blasing and coworkers [PRL 121(7):073202] showed that in a photo-association reaction of Raman dressed spin orbit coupled $^{87}$Rb Bose Einstein Condensate when the reactant spin state is prepared in a coherent superposition of multiple bare spin states it leads to a destructive interference between reaction pathways. Here we report a theoretical study for a reaction scheme which leads to constructive quantum interference. This is achieved by changing the reactive scattering channel in the reaction. As the origin of coherent control comes from the spin part of the wavefunction it is sufficient to use radio frequency coupling to achieve the superposition state. Our results show that interferences can be used as a resource for the coherent control of photo-chemical reactions. The approach is general and can be employed to study a wide spectra of chemical reactions in the ultracold regime.

Related papers

• Measuring the Evolution of Entanglement in Compton Scattering [101.11630543545151]
  The behavior of quantum entanglement during scattering is identical to the behavior of initially classically correlated photons up to a constant factor equal to two. Our dedicated experiment with photons confirms these results and explains the "Puzzle of Decoherence" observed recently.
  arXiv  Detail & Related papers  (2024-06-20T14:21:23Z)
• Quantum interference and entanglement in ultracold atom-exchange reactions [0.0]
  Coherent superpositions and entanglement are hallmarks of quantum mechanics, but they are fragile and can easily be perturbed by their environment. Selected isolated physical systems can maintain coherence and generate entanglement using well-controlled interactions. A fundamental question is whether coherence can be preserved in chemical reactions and then harnessed to generate entangled products.
  arXiv  Detail & Related papers  (2023-10-11T16:00:28Z)
• Direct observation of geometric phase in dynamics around a conical intersection [0.0]
  We experimentally observe geometric-phase interference in the dynamics of a wavepacket travelling around an engineered conical intersection. We develop a technique to reconstruct the two-dimensional wavepacket densities of a trapped ion. Experiments agree with the theoretical model, demonstrating the ability of analog quantum simulators to accurately describe nuclear quantum effects.
  arXiv  Detail & Related papers  (2022-11-14T13:00:13Z)
• Entanglement of annihilation photons [141.5628276096321]
  We present the results of a new experimental study of the quantum entanglement of photon pairs produced in positron-electron annihilation at rest. Despite numerous measurements, there is still no experimental proof of the entanglement of photons.
  arXiv  Detail & Related papers  (2022-10-14T08:21:55Z)
• Quantum suppression of cold reactions far from the quantum regime [0.0]
  We study resonant charge-exchange reactions between single cold pairs of neutral $87$Rb atoms and optically-inaccessible $87$Rb$+$ ions. Our results indicate for the first time that quantum interference persists and effects reaction rates at very high temperatures.
  arXiv  Detail & Related papers  (2022-08-16T12:40:59Z)
• Formation of robust bound states of interacting microwave photons [148.37607455646454]
  One of the hallmarks of interacting systems is the formation of multi-particle bound states. We develop a high fidelity parameterizable fSim gate that implements the periodic quantum circuit of the spin-1/2 XXZ model. By placing microwave photons in adjacent qubit sites, we study the propagation of these excitations and observe their bound nature for up to 5 photons.
  arXiv  Detail & Related papers  (2022-06-10T17:52:29Z)
• Quantum asymmetry and noisy multi-mode interferometry [55.41644538483948]
  Quantum asymmetry is a physical resource which coincides with the amount of coherence between the eigenspaces of a generator. We show that the asymmetry may emphincrease as a result of a emphdecrease of coherence inside a degenerate subspace.
  arXiv  Detail & Related papers  (2021-07-23T07:30:57Z)
• Faraday imaging induced squeezing of a double-well Bose-Einstein condensate [0.0]
  We examine how non-destructive measurements generate spin squeezing in an atomic Bose-Einstein condensate confined in a double-well trap. The condensate in each well is monitored using coherent light beams in a Mach-Zehnder configuration that interacts with the atoms through a quantum nondemolition Hamiltonian. We find that monitoring the condensate at zero detection current and with identical coherent light beams minimizes the backaction of the measurement on the atoms.
  arXiv  Detail & Related papers  (2021-04-06T09:16:04Z)
• Quantum Borrmann effect for dissipation-immune photon-photon correlations [137.6408511310322]
  We study theoretically the second-order correlation function $g(2)(t)$ for photons transmitted through a periodic Bragg-spaced array of superconducting qubits, coupled to a waveguide. We demonstrate that photon bunching and anti-bunching persist much longer than both radiative and non-radiative lifetimes of a single qubit.
  arXiv  Detail & Related papers  (2020-09-29T14:37:04Z)
• State-to-state control of ultracold molecular reactions [3.087423765603519]
  Quantum control of reactive systems has enabled microscopic probes of underlying interaction potentials. We realize this goal through the nuclear spin degree of freedom. We are able to control both the inputs and outputs of a bimolecular reaction with quantum state resolution.
  arXiv  Detail & Related papers  (2020-05-21T17:55:06Z)
• Optical Magnetometer: Quantum Resonances at pumping repetition rate of 1/n of the Larmor frequency [58.720142291102135]
  Quantum sub-resonances at a repetition rate of $1/n$ of the Larmor frequency of the magnetic field inside the shield are experimentally observed and theoretically explained. Investigations in single alkali atoms cells as well as mixed alkali atoms of K and Rb are presented.
  arXiv  Detail & Related papers  (2020-02-20T09:14:56Z)

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.