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The alkali metal sodium (atomic number 11) has one more electron than the neon atom. This electron must go into the lowest-energy subshell available, the 3s orbital, giving a 1s22s22p63s1 configuration. The electrons occupying the outermost shell orbital(s) (highest value of n) are called valence electrons, and those occupying the inner shell orbitals are called core electrons. Since the core electron shells correspond to noble gas electron configurations, we can abbreviate electron...
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Isolated atoms have discrete energy levels that are well described by the Bohr model. And, it quantifies the energy of an electron in a hydrogen atom as En. Higher quantum numbers 'n' yield less negative, closer electron energy levels.
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Electron configurations and orbital diagrams can be determined by applying the Aufbau principle (each added electron occupies the subshell of lowest energy available), Pauli exclusion principle (no two electrons can have the same set of four quantum numbers), and Hund’s rule of maximum multiplicity (whenever possible, electrons retain unpaired spins in degenerate orbitals).
The relative energies of the subshells determine the order in which atomic orbitals are filled (1s, 2s, 2p, 3s, 3p,...
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Electron carriers can be thought of as electron shuttles. These compounds can easily accept electrons (i.e., be reduced) or lose them (i.e., be oxidized). They play an essential role in energy production because cellular respiration is contingent on the flow of electrons.
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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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Orbitals are the areas outside of the atomic nucleus where electrons are most likely to reside. They are characterized by different energy levels, shapes, and three-dimensional orientations. The location of electrons is described most generally by a shell or principal energy level, then by a subshell within each shell, and finally, by individual orbitals found within the subshells.
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Electrones individuales en neón sólido como una plataforma de qubits de estado sólido

Xianjing Zhou1, Gerwin Koolstra2, Xufeng Zhang1

  • 1Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, USA.

Nature
|May 4, 2022
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores desarrollaron un nuevo bit cuántico (qubit) utilizando electrones individuales en neón sólido. Esta plataforma de electrones sobre neones demuestra una coherencia y tiempos de operación prometedores para aplicaciones de computación cuántica.

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Área de la Ciencia:

  • Hardware de computación cuántica
  • Sistemas de información cuántica en estado sólido
  • Los estados cuánticos de electrones

Sus antecedentes:

  • El desarrollo de computadoras cuánticas se basa en bloques de construcción de qubits avanzados.
  • Los electrones son portadores fundamentales de información cuántica, pero su rendimiento depende del entorno material.
  • Las plataformas de qubits existentes se enfrentan a desafíos para lograr una larga coherencia, una operación rápida y una escalabilidad simultáneas.

Objetivo del estudio:

  • Realizar experimentalmente una nueva plataforma de qubits usando electrones aislados atrapados en neón sólido.
  • Para integrar este sistema de electrones sobre neones en una arquitectura de electrodinámica cuántica de circuito.
  • Para demostrar un fuerte acoplamiento entre estados de movimiento de electrones y fotones de microondas para operaciones de qubits.

Principales métodos:

  • Realización experimental de la captura de electrones individuales en una superficie sólida de neón ultralimpia en el vacío.
  • Integración de una trampa de electrones dentro de una arquitectura de electrodinámica cuántica de circuito.
  • Implementación de operaciones de puerta de qubit y lectura dispersiva utilizando resonadores superconductores en el chip.

Principales resultados:

  • Se logró un fuerte acoplamiento entre estados de movimiento de electrones individuales y fotones de microondas individuales.
  • Se ha medido un tiempo de relajación energética (T1) de 15 microsegundos.
  • Se ha medido un tiempo de coherencia de fase (T2) superior a 200 nanosegundos.

Conclusiones:

  • La plataforma de qubits de electrón-sólido-neón demuestra un rendimiento competitivo, cercano al estado de la técnica para los qubits de carga.
  • Esta plataforma ofrece una nueva vía prometedora para construir computadoras cuánticas escalables y sistemas de información cuántica.
  • La coherencia lograda y los tiempos de operación resaltan el potencial de los electrones como portadores de información cuántica robustos en entornos adaptados.