Coherent Control of Hyperfine States and Slow and Fast Light Switching in Ultracold Atoms

• URL: http://arxiv.org/abs/2107.08897v1
• Date: Mon, 19 Jul 2021 14:10:24 GMT
• Title: Coherent Control of Hyperfine States and Slow and Fast Light Switching in Ultracold Atoms
• Authors: Abdelsalam H. M. Abdelaziz and Amarendra K. Sarma
• Abstract summary: We propose a scheme for attaining slow and fast light via coherent control of the hyperfine ground and excited states of an ultracold atomic system. The role of field detuning and field intensity on both the population transfer and induced polarization is investigated.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose a scheme for attaining slow and fast light via coherent control of the hyperfine ground and excited states of an ultracold atomic system. The proposed scheme is theoretically analyzed for the $D_1$ transition of ultracold $^{23}$ Na atoms. The role of field detuning and field intensity on both the population transfer and induced polarization is investigated. It is shown that slow and fast light, with large bandwidth could be obtained in the proposed system. It is inferred that both slow and fast light could co-propagate, pertaining to different optical and Raman transitions. Further, it is observed that switching between the slow and the fast light is achievable by controlling the field intensity, as well as the field detuning.

Related papers

• All-optical modulation with single-photons using electron avalanche [66.27103948750306]
  We demonstrate all-optical modulation enabled by electron avalanche process in silicon. Our approach opens the possibility of gigahertz-speed, and potentially even faster, optical switching at the single-photon level.
  arXiv  Detail & Related papers  (2023-12-18T20:14:15Z)
• Tunable phonon-photon coupling induces double MMIT and enhances slow light in an atom-opto-magnomechanics [0.0]
  We show double magnomechanically induced transparency (MMIT) in the probe output spectrum by exploiting the phonon-photon coupling strength. This result may have potential applications in quantum information processing and communication.
  arXiv  Detail & Related papers  (2023-11-29T15:36:03Z)
• Tailoring population transfer between two hyperfine ground states of Rb87 [49.1574468325115]
  We investigate the coherent control over a complex multi-level atomic system using the stimulated Raman adiabatic passage (STIRAP) We demonstrate the ability to decompose the system into three- and four-level subsystems independently interacting with light beams.
  arXiv  Detail & Related papers  (2022-10-21T14:57:21Z)
• Resonant and phonon-assisted ultrafast coherent control of a single hBN color center [0.9780978323141835]
  We demonstrate coherent state manipulation of a single hBN color center with ultrafast laser pulses. Our results pave the way for ultrafast phonon quantum state control on the nanoscale.
  arXiv  Detail & Related papers  (2022-05-10T10:01:48Z)
• Slowing down light in a qubit metamaterial [98.00295925462214]
  superconducting circuits in the microwave domain still lack such devices. We demonstrate slowing down electromagnetic waves in a superconducting metamaterial composed of eight qubits coupled to a common waveguide. Our findings demonstrate high flexibility of superconducting circuits to realize custom band structures.
  arXiv  Detail & Related papers  (2022-02-14T20:55:10Z)
• Intrinsic mechanisms for drive-dependent Purcell decay in superconducting quantum circuits [68.8204255655161]
  We find that in a wide range of settings, the cavity-qubit detuning controls whether a non-zero photonic population increases or decreases qubit decay Purcell. Our method combines insights from a Keldysh treatment of the system, and Lindblad theory.
  arXiv  Detail & Related papers  (2021-06-09T16:21:31Z)
• Fast control of atom-light interaction in a narrow linewidth cavity [0.0]
  We propose a method to exploit high finesse optical resonators for light assisted coherent manipulation of atomic ensembles. The key element of our scheme is to rapidly switch the interaction between the atoms and the cavity field with an auxiliary control process.
  arXiv  Detail & Related papers  (2021-02-03T17:47:03Z)
• Ultrafast optical control over spin and momentum in solids [0.0]
  We show that charge of specified spin and crystal momentum can be created with precision throughout the first Brillouin zone. We thus establish a route from laser light to local control over excitations in reciprocal space, opening the way to a specified excited states at ultrafast time scales.
  arXiv  Detail & Related papers  (2020-12-06T12:24:21Z)
• Deterministic single-atom source of quasi-superradiant $N$-photon pulses [62.997667081978825]
  Scheme operates with laser and cavity fields detuned from the atomic transition by much more than the excited-state hyperfine splitting. This enables reduction of the dynamics to that of a simple, cavity-damped Tavis-Cummings model with the collective spin determined by the total angular momentum of the ground hyperfine level.
  arXiv  Detail & Related papers  (2020-12-01T03:55:27Z)
• Engineering multipartite entangled states in doubly pumped parametric down-conversion processes [68.8204255655161]
  We investigate the quantum state generated by optical parametric down-conversion in a $chi(2) $ medium driven by two modes. The analysis shows the emergence of multipartite, namely 3- or 4-partite, entangled states in a subset of the modes generated by the process.
  arXiv  Detail & Related papers  (2020-07-23T13:53:12Z)
• Speeding Up Particle Slowing using Shortcuts to Adiabaticity [0.0]
  Time-resolved laser pulses with periodically modified detunings address an ultranarrow electronic transition. We show the advantages that potentially arise when the excited state decay rate is small.
  arXiv  Detail & Related papers  (2020-07-14T01:17:54Z)
• Hyperentanglement in structured quantum light [50.591267188664666]
  Entanglement in high-dimensional quantum systems, where one or more degrees of freedom of light are involved, offers increased information capacities and enables new quantum protocols. Here, we demonstrate a functional source of high-dimensional, noise-resilient hyperentangled states encoded in time-frequency and vector-vortex structured modes. We generate highly entangled photon pairs at telecom wavelength that we characterise via two-photon interference and quantum state tomography, achieving near-unity visibilities and fidelities.
  arXiv  Detail & Related papers  (2020-06-02T18:00:04Z)

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.