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Related Concept Videos

The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

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Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
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Atomic Emission Spectroscopy: Instrumentation01:22

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The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
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Atomic Absorption Spectroscopy: Interference01:25

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Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
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Atomic Emission Spectroscopy: Interference01:30

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In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
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Atomic Absorption Spectroscopy: Atomization Methods01:25

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Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the...
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Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

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AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
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Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Controlling Interactions between Quantum Emitters Using Atom Arrays.

Taylor L Patti1, Dominik S Wild1, Ephraim Shahmoon1,2

  • 1Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.

Physical Review Letters
|June 21, 2021
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Summary
This summary is machine-generated.

Two-dimensional atom arrays can control quantum emitter properties like emission linewidths and frequency shifts. This enables enhanced interactions between distant quantum emitters for potential applications.

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Area of Science:

  • Quantum optics
  • Atomic physics
  • Condensed matter physics

Background:

  • Quantum emitters are crucial for quantum technologies.
  • Controlling emitter properties is essential for device performance.
  • Interactions between emitters can be mediated by their environment.

Purpose of the Study:

  • Investigate two-dimensional atom arrays for modifying quantum emitter radiation and interactions.
  • Demonstrate control over emission linewidths, resonant frequency shifts, and local driving field enhancement.
  • Explore enhancement of coherent dipole-dipole interactions between distant impurity atoms.

Main Methods:

  • Theoretical investigation of two-dimensional atom arrays.
  • Analysis of dipole-dipole interactions within ordered, subwavelength atom configurations.
  • Modeling of quantum emitter properties (linewidths, frequency shifts, field enhancement).

Main Results:

  • Two-dimensional atom arrays can precisely control quantum emitter properties.
  • Strong dipole-dipole interactions enable modification of emission linewidths and resonant frequencies.
  • Coherent dipole-dipole interactions between distant emitters are significantly enhanced.

Conclusions:

  • Ordered, subwavelength two-dimensional atom arrays offer a powerful platform for controlling quantum emitters.
  • Enhanced emitter interactions open possibilities for novel quantum devices and applications.
  • The findings provide a roadmap for experimental realization and future research.