Engineering Near-Infrared Two-Level Systems in Confined Alkali Vapors

• URL: http://arxiv.org/abs/2601.16269v1
• Date: Thu, 22 Jan 2026 19:04:55 GMT
• Title: Engineering Near-Infrared Two-Level Systems in Confined Alkali Vapors
• Authors: Gilad Orr, Golan Ben-Ari, Eliran Talker,
• Abstract summary: We study a two-level atomic system operating in the near-infrared telecom wavelength regime.<n>In this strongly confined geometry, atomic coherence is profoundly influenced by wall-induced relaxation.<n>Our results establish a practical route to realizing near-infrared atomic two-level systems in compact vapor-cell devices.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We combined experimental and theoretical investigations of an effective two-level atomic system operating in the near-infrared telecom wavelength regime, realized using hot rubidium vapor confined within a sub-micron-thick cell. In this strongly confined geometry, atomic coherence is profoundly influenced by wall-induced relaxation arising from frequent atom-surface collisions. By analyzing both absorption and fluorescence spectra, we demonstrate that the optical response is dominated by a closed cycling transition, which effectively isolates the atomic dynamics to a two-level configuration despite the presence of multiple hyperfine states. This confinement-induced selection suppresses optical pumping into uncoupled states and enables robust, controllable light-matter interaction at telecom wavelengths within a miniature atomic platform. Our results establish a practical route to realizing near-infrared atomic two-level systems in compact vapor-cell devices, opening new opportunities for integrated quantum photonic technologies, including on-chip quantum memories, telecom-band frequency references, and scalable quantum information processing.

Related papers

• Deterministic coupling of ultracold atomic lattice to a suspended photonic waveguide [0.0]
  deterministic coupling of an ultracold atomic lattice to light propagating in suspended on-chip photonic circuits.<n>These capabilities open avenues to address scalability challenges in neutral-atom quantum computers and simulators.<n>Beyond controllable quantum matter, the platform also enables in-situ imaging of evanescent fields of light and nanoscale structures.
  arXiv  Detail & Related papers  (2025-11-22T23:01:09Z)
• Nonclassical Driven-Dissipative Dynamics in Collective Quantum Optics [51.56484100374058]
  We study ensembles of interacting quantum emitters coherently driven by a laser field and coupled to photonic structures.<n>We find that off-resonant virtual states may gain population through dissipation, redefining their role in open systems.<n>Our models address challenges like inhomogeneous broadening and decoherence, demonstrating the feasibility of harnessing cooperative light-matter effects for quantum technologies.
  arXiv  Detail & Related papers  (2025-09-12T20:01:55Z)
• Engineering interactions by collective coupling of atom pairs to cavity photons for entanglement generation [0.0]
  Engineering atom-atom interactions is essential for controlling novel phases of matter and for efficient preparation of many-body entangled states.<n>We show that induced atom-photon interactions can generate robust many-body entanglement in two-mode ultracold bosons.<n>Our results pave the way for engineering atom-atom interactions to study novel phases of light and matter in hybrid atom-photon systems.
  arXiv  Detail & Related papers  (2024-06-20T16:23:05Z)
• Limits for coherent optical control of quantum emitters in layered materials [49.596352607801784]
  coherent control of a two-level system is among the most essential challenges in modern quantum optics. We use a mechanically isolated quantum emitter in hexagonal boron nitride to explore the individual mechanisms which affect the coherence of an optical transition under resonant drive. New insights on the underlying physical decoherence mechanisms reveals a limit in temperature until which coherent driving of the system is possible.
  arXiv  Detail & Related papers  (2023-12-18T10:37:06Z)
• Dissipative stabilization of maximal entanglement between non-identical emitters via two-photon excitation [49.1574468325115]
  Two non-identical quantum emitters, when placed within a cavity and coherently excited at the two-photon resonance, can reach stationary states of nearly maximal entanglement. We show that this mechanism is merely one among a complex family of phenomena that can generate both stationary and metastable entanglement when driving the emitters at the two-photon resonance.
  arXiv  Detail & Related papers  (2023-06-09T16:49:55Z)
• State Carving in a Chirally-Coupled Atom-Nanophotonic Cavity [0.0]
  We study the reflectivity spectrum in an atom-photonic cavity with collective nonreciprocal couplings. Our results pave the way toward quantum engineering of multiqubit states.
  arXiv  Detail & Related papers  (2022-12-28T16:19:33Z)
• Tunable photon-mediated interactions between spin-1 systems [68.8204255655161]
  We show how to harness multi-level emitters with several optical transitions to engineer photon-mediated interactions between effective spin-1 systems. Our results expand the quantum simulation toolbox available in cavity QED and quantum nanophotonic setups.
  arXiv  Detail & Related papers  (2022-06-03T14:52:34Z)
• Electromagnetically induced transparency in inhomogeneously broadened divacancy defect ensembles in SiC [52.74159341260462]
  Electromagnetically induced transparency (EIT) is a phenomenon that can provide strong and robust interfacing between optical signals and quantum coherence of electronic spins. We show that EIT can be established with high visibility also in this material platform upon careful design of the measurement geometry. Our work provides an understanding of EIT in multi-level systems with significant inhomogeneities, and our considerations are valid for a wide array of defects in semiconductors.
  arXiv  Detail & Related papers  (2022-03-18T11:22:09Z)
• 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)
• Extensible quantum simulation architecture based on atom-photon bound states in an array of high-impedance resonators [0.0]
  photonic lattices can seed long-lived atom-photon bound states inside photonic band gaps. Here we report on the concept and implementation of a novel microwave architecture consisting of an array of compact, high-impedance superconducting resonators. We show coherent interactions between two atom-photon bound states, in both resonant and dispersive regimes, that are suitable for the implementation of SWAP and CZ two-qubit gates.
  arXiv  Detail & Related papers  (2021-07-14T17:10:27Z)
• Hybrid quantum photonics based on artificial atoms placed inside one hole of a photonic crystal cavity [47.187609203210705]
  Hybrid quantum photonics with SiV$-$-containing nanodiamonds inside one hole of a one-dimensional, free-standing, Si$_3$N$_4$-based photonic crystal cavity is presented. The resulting photon flux is increased by more than a factor of 14 as compared to free-space. Results mark an important step to realize quantum network nodes based on hybrid quantum photonics with SiV$-$- center in nanodiamonds.
  arXiv  Detail & Related papers  (2020-12-21T17:22:25Z)

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.