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Mass Analyzers: Common Types01:19

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The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...
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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 emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
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In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis,  the precessing magnetic moments are randomly oriented around the z-axis.
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An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
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Multi-Qubit Bose-Einstein Condensate Trap for Atomic Boson Sampling.

Sergey Tarasov1, William Shannon2, Vladimir Kocharovsky1

  • 1Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod 603950, Russia.

Entropy (Basel, Switzerland)
|December 23, 2022
PubMed
Summary
This summary is machine-generated.

We propose a multi-qubit Bose-Einstein-condensate (BEC) trap for studying quantum statistics. This platform enables clear testing of atomic boson sampling and its quantum advantage over classical computing.

Keywords:
Bose–Einstein condensationGaussian boson samplingNP-hard problemquantum advantage

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Area of Science:

  • Quantum physics
  • Many-body systems
  • Atomic physics

Background:

  • Bose-Einstein condensates (BECs) are crucial for studying quantum phenomena.
  • Existing methods like linear interferometers have limitations for certain quantum simulations.

Purpose of the Study:

  • To propose a novel multi-qubit Bose-Einstein-condensate (BEC) trap.
  • To explore its potential for studying quantum statistical phenomena in interacting many-body systems.

Main Methods:

  • Utilizing a multi-qubit BEC trap platform.
  • Investigating atomic boson sampling of excited-state occupations.

Main Results:

  • The BEC trap platform allows for a controllable and clear test of atomic boson sampling.
  • It offers a distinct approach compared to photon-based boson sampling.

Conclusions:

  • The proposed BEC trap is a promising platform for fundamental quantum many-body studies.
  • It facilitates the exploration of quantum advantage in interacting systems.