Synthesizing electromagnetically induced transparency without a control field in waveguide QED using small and giant atoms

• URL: http://arxiv.org/abs/2011.15077v1
• Date: Mon, 30 Nov 2020 18:18:19 GMT
• Title: Synthesizing electromagnetically induced transparency without a control field in waveguide QED using small and giant atoms
• Authors: Andreas Ask, Yao-Lung L. Fang, Anton Frisk Kockum
• Abstract summary: electromagnetically induced transparency (EIT) is a narrow transparency window associated with a fluorescence quench at its center frequency. EIT is common in waveguide quantum electrodynamics when multiple closely spaced quantum emitters are coupled to a waveguide. We study a number of different setups with two-level atoms in waveguide QED that all exhibit EIT-like transparency windows.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The absorption of photons in a three-level atom can be controlled and manipulated by applying a coherent drive at one of the atomic transitions. The situation where the absorption is fully canceled, and the atom thus has been turned completely transparent, has been coined electromagnetically induced transparency (EIT). The characteristics of EIT is a narrow transparency window associated with a fluorescence quench at its center frequency, indicating that inelastic scattering at this particular point is suppressed. The emergence of EIT-like transparency windows is common in waveguide quantum electrodynamics (QED) when multiple closely spaced quantum emitters are coupled to a waveguide. The transparency depends on the separation and energy detuning of the atoms. In this work, we study a number of different setups with two-level atoms in waveguide QED that all exhibit EIT-like transparency windows. Unlike the case of a genuine three-level atom, no drive fields are required in the systems we consider, and the coherent coupling of energy levels is mediated by the waveguide. We specifically distinguish between systems with genuine EIT-like dynamics and those that exhibit a transparency window but lack the fluorescence quench. The systems that we consider consist of both small and giant atoms, which can be experimentally realized with artificial atoms coupled to either photons or phonons. These systems can offer a simpler route to many EIT applications since the need for external driving is eliminated.

Related papers

• Collectively induced transparency and absorption in waveguide QED with Bragg atom arrays [0.5463417677777277]
  We study collective quantum phenomena in waveguide-coupled Bragg atom arrays with inhomogeneous frequencies. For atoms without free-space dissipation, collectively induced transparency is produced by destructive quantum interference between subradiant and superradiant states. We find collectively induced absorption (CIA) by studying the influence of free-space dissipation on photon transport.
  arXiv  Detail & Related papers  (2024-07-06T02:30:54Z)
• All-optical modulation with single-photons using electron avalanche [69.65384453064829]
  We demonstrate all-optical modulation using a beam with single-photon intensity. Our approach opens up the possibility of terahertz-speed optical switching at the single-photon level.
  arXiv  Detail & Related papers  (2023-12-18T20:14:15Z)
• Electromagnetically Induced Transparency and Optical Pumping in the Hyperfine Paschen-Back Regime [0.0]
  We report experiments of rubidium vapor in a high magnetic field under conditions of electromagnetically induced transparency (EIT) and optical pumping. The 1.1 T static magnetic field decouples nuclear and electronic spins and shifts each magnetic state via the Zeeman effect. We conclude that the cleanliness'' of this system greatly enhances the capabilities of quantum control in hot vapor.
  arXiv  Detail & Related papers  (2023-07-17T15:05:14Z)
• 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)
• Quantum-limited millimeter wave to optical transduction [50.663540427505616]
  Long distance transmission of quantum information is a central ingredient of distributed quantum information processors. Current approaches to transduction employ solid state links between electrical and optical domains. We demonstrate quantum-limited transduction of millimeter-wave (mmwave) photons into optical photons using cold $85$Rb atoms as the transducer.
  arXiv  Detail & Related papers  (2022-07-20T18:04:26Z)
• 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)
• 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)
• Sensitivity of electromagnetically induced transparency to light-mediated interactions [0.0]
  We consider an ensemble of cold three-level atoms, in a $Lambda$ configuration, scattering a probe and a control field to the vacuum modes of the electromagnetic field. We show that the light-mediated long-range interactions that emerge between the dipoles narrow the EIT transparency window for increasing densities and sample sizes.
  arXiv  Detail & Related papers  (2021-04-01T20:47:17Z)
• Quantum interface between light and a one-dimensional atomic system [58.720142291102135]
  We investigate optimal conditions for the quantum interface between a signal photon pulse and one-dimensional chain consisting of a varied number of atoms. The efficiency of interaction is mainly limited by achieved overlap and coupling of the waveguide evanescent field with the trapped atoms.
  arXiv  Detail & Related papers  (2020-04-11T11:43:54Z)
• Effect of Closely-Spaced Excited States on Electromagnetically Induced Transparency [0.0]
  Electromagnetically induced transparency (EIT) is a well-known phenomenon due in part to its applicability to quantum devices such as quantum memories and quantum gates. We present a theoretical study of the effect of two closely-spaced excited states on EIT and off-resonance Raman transitions.
  arXiv  Detail & Related papers  (2019-12-27T18:01:45Z)

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.