Optimization of two-photon absorption for three-level atom

• URL: http://arxiv.org/abs/2411.13274v1
• Date: Wed, 20 Nov 2024 12:42:47 GMT
• Title: Optimization of two-photon absorption for three-level atom
• Authors: Masood Valipour, Gniewomir Sarbicki, Karolina Słowik, Anita Dąbrowska,
• Abstract summary: We find that the spectro-temporal shape of the optimal state of light is determined by the lifetimes of the atomic states. Two distinct interaction regimes can be identified in which the entanglement of the input state of light has qualitatively different impact.
• Score: 0.0
• License:
• Abstract: This work discusses the problem of optimal excitation of a three-level atom of ladder-configuration by light in the two-photon state and coherent light carrying an average of two photons. The applied atom-light interaction model is based on the Wigner-Weisskopf approximation. We characterize the properties of the optimal two-photon state that excites an atom perfectly, i.e. with probability equal to one: We find that the spectro-temporal shape of the optimal state of light is determined by the lifetimes of the atomic states, with the degree of photonic entanglement in the optimal state depends on the lifetime ratio. In consequence, two distinct interaction regimes can be identified in which the entanglement of the input state of light has qualitatively different impact. As the optimal states may be challenging to prepare in general, we compare the results with those obtained for photon pairs of selected experimentally-relevant pulse shapes. As these shapes are optimized for maximal atomic excitation probability, the results can be interpreted in terms of the overlap between the optimal and investigated pulse shapes.

Related papers

• Correlated relaxation and emerging entanglement in arrays of $Λ$-type atoms [83.88591755871734]
  We show that the atomic entanglement emerges in the course of relaxation and persists in the final steady state of the system. Our findings open a new way to engineer dissipation-induced entanglement.
  arXiv  Detail & Related papers  (2024-11-11T08:39:32Z)
• Manipulating Two-Photon Absorption of Molecules through Efficient Optimization of Entangled Light [0.0]
  A new comprehensive optimization protocol based on Bayesian optimization has been developed in this work. The entangled two-photon absorption probability for a thiophene dendrimer can be enhanced by up to a factor of 20. In addition to optimization, we have explored entangled two-photon absorption in the small entanglement time limit.
  arXiv  Detail & Related papers  (2024-09-17T17:17:01Z)
• Quantum trajectories and output field properties for two-photon input field [0.0]
  The excitation of atomic and molecular systems by propagating light in a two-photon state within the Wigner-Weisskopf approximation has been described. The problem of an evolution of the quantum system, depending on the results of the measurement of the output field, was formulated.
  arXiv  Detail & Related papers  (2024-09-11T17:18:38Z)
• Directional spontaneous emission in photonic crystal slabs [49.1574468325115]
  Spontaneous emission is a fundamental out-of-equilibrium process in which an excited quantum emitter relaxes to the ground state due to quantum fluctuations. One way to modify these photon-mediated interactions is to alter the dipole radiation patterns of the emitter, e.g., by placing photonic crystals near them. Our study delves into the interaction between these directional emission patterns and the aforementioned variables, revealing the untapped potential to fine-tune collective quantum optical phenomena.
  arXiv  Detail & Related papers  (2023-12-04T15:35:41Z)
• Many-photon scattering and entangling in a waveguide with a {\Lambda}-type atom [55.2480439325792]
  We show that after transmission of a short few-photon pulse, the final state of the atom and all the photons is a genuine multipartite entangled state belonging to the W class. The parameters of the input pulse are optimized to maximize the efficiency of three- and four-partite W-state production.
  arXiv  Detail & Related papers  (2023-09-25T09:06:28Z)
• Optimization of selective two-photon absorption in cavity polaritons [0.0]
  We investigate optimal states of photon pairs to excite a target transition in a multilevel quantum system. We find that the added value of optimal entangled states of light increases with broadening linewidths of the target states.
  arXiv  Detail & Related papers  (2021-06-08T08:23:17Z)
• Two-photon resonance fluorescence of two interacting non-identical quantum emitters [77.34726150561087]
  We study a system of two interacting, non-indentical quantum emitters driven by a coherent field. We show that the features imprinted by the two-photon dynamics into the spectrum of resonance fluorescence are particularly sensitive to changes in the distance between emitters. This can be exploited for applications such as superresolution imaging of point-like sources.
  arXiv  Detail & Related papers  (2021-06-04T16:13:01Z)
• How to optimize the absorption of two entangled photons [0.0]
  entanglement can enhance two-photon absorption in a three-level system. We derive optimal pulse shaping functions to enhance absorption efficiency. We compare the maximal enhancement achievable by entanglement to the yield of optimally shaped, separable pulses.
  arXiv  Detail & Related papers  (2021-05-28T14:38:15Z)
• Light-matter interactions near photonic Weyl points [68.8204255655161]
  Weyl photons appear when two three-dimensional photonic bands with linear dispersion are degenerated at a single momentum point, labeled as Weyl point. We analyze the dynamics of a single quantum emitter coupled to a Weyl photonic bath as a function of its detuning with respect to the Weyl point.
  arXiv  Detail & Related papers  (2020-12-23T18:51:13Z)
• Position-controlled quantum emitters with reproducible emission wavelength in hexagonal boron nitride [45.39825093917047]
  Single photon emitters (SPEs) in low-dimensional layered materials have recently gained a large interest owing to the auspicious perspectives of integration and extreme miniaturization. Here, we evidence SPEs in high purity synthetic hexagonal boron nitride (hBN) that can be activated by an electron beam at chosen locations. Our findings constitute an essential step towards the realization of top-down integrated devices based on identical quantum emitters in 2D materials.
  arXiv  Detail & Related papers  (2020-11-24T17:20:19Z)

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.