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Related Concept Videos

Mass Analyzers: Common Types01:19

Mass Analyzers: Common Types

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...
Mass Analyzers: Overview01:13

Mass Analyzers: Overview

The mass analyzer is a crucial component of the mass spectrometer. In the ionization chamber, the vaporized sample is bombarded with a high-energy electron beam to generate a radical cation and further fragment into neutral molecules, radicals, and cations. A series of negatively charged accelerator plates accelerate the cations into the mass analyzer. The mass analyzer separates ions according to their mass-to-charge (m/z) ratios and then directs them to the detector. The common types of mass...
Mass Spectrometers01:16

Mass Spectrometers

This lesson details the instrumentation of a mass spectrometer—a physical instrument to perform mass spectrometry on analyte molecules and record the characteristic mass spectra. This is achieved via three chief functions:
Tandem Mass Spectrometry01:21

Tandem Mass Spectrometry

Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
Chemical Ionization (CI) Mass Spectrometry01:21

Chemical Ionization (CI) Mass Spectrometry

The molecular ion peak of a molecule in the mass spectrum provides vital information for molecular identification. However, conventional electron impact ionization can lead to the rapid dissociation of some molecular ions before they reach the detector. A milder ionization method is required to increase the lifetime of such ionized analyte molecules. Chemical ionization (CI) is a gas-phase protonation reaction useful for mass-analyzing analyte molecules that are easily protonated to yield the...
Mass Spectrum: Interpretation01:24

Mass Spectrum: Interpretation

An unknown compound can be established by identifying the molecular ion peak in the mass spectrum. The molecular ion peak is often weak or absent due to the predominance of fragmentation in high-energy electron beams. In such cases, a soft-energy electron beam can be used to scan the spectrum to enhance the intensity of the molecular ion peak. Additionally, chemical ionization, field ionization, and desorption ionization spectra are used to obtain a relatively intense molecular ion peak.To...

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Related Experiment Video

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Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
11:45

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps

Published on: August 17, 2017

Complete methods set for scalable ion trap quantum information processing.

Jonathan P Home1, David Hanneke, John D Jost

  • 1Time and Frequency Division, National Institute of Standards and Technology (NIST), Boulder, CO 80305, USA. jonathan.home@gmail.com

Science (New York, N.Y.)
|August 8, 2009
PubMed
Summary
This summary is machine-generated.

Researchers demonstrated scalable quantum computing using trapped atomic ions. Qubit operations remained highly repeatable even after transporting ions over long distances, a key step for large quantum processors.

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Area of Science:

  • Quantum computing
  • Atomic physics
  • Information science

Background:

  • Scalable quantum information processors require robust quantum information transport and reliable logical operations.
  • Trapped atomic ions are a promising platform for quantum computation due to their controllability and coherence.

Purpose of the Study:

  • To demonstrate the fundamental elements for scalable quantum computing using trapped atomic ions.
  • To quantify the repeatability of multi-qubit operations during ion transport.

Main Methods:

  • Utilized qubits stored in the internal states of trapped atomic ions.
  • Employed hyperfine states of 9Be+ ions for qubit storage, readout, and gates.
  • Implemented simultaneous trapping of 24Mg+ ions for re-cooling.

Main Results:

  • Showcased a combination of essential elements for scalable quantum computing.
  • Quantified high repeatability of multi-qubit operations.
  • Observed no performance degradation despite macroscopic qubit transport.

Conclusions:

  • The demonstrated techniques are crucial for building large-scale, reliable quantum information processors.
  • Robust qubit storage and transport in trapped ions pave the way for practical quantum computation.