Video Experimental Relacionado
Updated: Jul 13, 2025

14:58
Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
Published on: June 3, 2015
14.7K
Puertas de alta fidelidad y conversión de borrado de circuito medio en un qubit atómico
Shuo Ma1,2, Genyue Liu1, Pai Peng1
1Department of Electrical and Computer Engineering, Princeton University, Princeton, NJ, USA.
Nature
|October 11, 2023
Resumen
Los investigadores desarrollaron un nuevo qubit de átomo neutro utilizando ytterbium-171 (Yb). Este qubit permite puertas cuánticas de alta fidelidad y convierte errores en borradores detectables para la computación cuántica tolerante a fallas.
Área de la Ciencia:
- Ciencia de la información cuántica
- Física atómica
- La computación cuántica
Sus antecedentes:
- Los qubits escalables y de alta fidelidad son cruciales para la ciencia de la información cuántica.
- Los qubits atómicos neutrales ofrecen una plataforma prometedora para la computación y la simulación cuántica.
- Explorar nuevas especies atómicas y estrategias de corrección de errores es vital para el avance de las tecnologías cuánticas.
Objetivo del estudio:
- Para demostrar un nuevo qubit atómico neutro utilizando el espín nuclear de Yb.
- Para lograr puertas de una y dos qubits de alta fidelidad.
- Implementar un mecanismo de detección de errores en el circuito intermedio para convertir los errores en borradores.
Principales métodos:
- Utilizó el espín nuclear de un estado metastable de larga duración en Yb para la implementación de qubits.
- Aprovecho la excitación rápida a los estados de Rydberg para operaciones de la puerta.
- Realizó una detección rápida en el medio del circuito para identificar y convertir errores en borradores.
Principales resultados:
- Logró altas fidelidades para puertas de un qubit (0,9990(1)) y dos qubits (0,980(1).
- Demostró que una porción significativa de los errores de la puerta conducen a la desintegración fuera del subespacio de los qubits.
- Convirtió estos errores en borradores detectables con una baja probabilidad de error inducido (<10-5) en los qubits restantes.
Conclusiones:
- Yb es una plataforma prometedora para los qubits atómicos neutrales.
- El mecanismo de detección de errores desarrollado es eficaz para la computación cuántica tolerante a fallos.
- Este trabajo avanza en el desarrollo de procesadores cuánticos escalables y de alta fidelidad.
Videos de Conceptos Relacionados
MOS Capacitor
815
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
815
MOSFET: Enhancement Mode
363
Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
363
Underflow Gates
60
Underflow gates are vital for controlling water flow in irrigation canals. The three main types of underflow gates — vertical, radial, and drum gates — serve different purposes while ensuring effective flow management. Vertical gates move up and down, generating a free-flowing water jet; radial gates pivot to regulate the flow; and drum gates rotate for precise adjustments. The flow through these gates is influenced by downstream conditions, resulting in free or drowned outflow.Free and...
60
The Quantum-Mechanical Model of an Atom
42.4K
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.
42.4K
MOSFET Amplifiers
166
The MOSFET, when operating in its active region, functions as a voltage-controlled current source. In this region, the gate-to-source voltage controls the drain current. This principle underlies the operation of the transconductance MOSFET amplifier. The output current is directed through a load resistor to convert this amplifier into a voltage amplifier. The output voltage is then obtained by subtracting the voltage drop across the load resistance from the supply voltage. This process results...
166
Field Effect Transistor
439
Field-effect transistors (FETs) are integral to electronic circuits and distinguished by their three-terminal setup: the gate, drain, and source. These transistors operate as unipolar devices, which utilize either electrons or holes as charge carriers, in contrast to bipolar transistors, which use both types of carriers. The primary function of the FET is to modulate the flow of these carriers from the source to the drain through a channel. The voltage difference between the gate and source...
439

