Video Experimental Relacionado
Updated: Jun 15, 2026

12:19
Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
Published on: April 4, 2017
8.7K
Circuitos cuánticos con muchos fotones en un chip nanofotónico programable
J M Arrazola1, V Bergholm2, K Brádler2
1Xanadu, Toronto, Ontario, Canada. juanmiguel@xanadu.ai.
Nature
|March 4, 2021
Resumen
Este estudio introduce un nuevo sistema de computación cuántica fotónica programable a temperatura ambiente. La nueva plataforma de hardware y software permite operaciones de circuito cuántico de alto número de fotones para algoritmos cuánticos avanzados.
Área de la Ciencia:
- La computación cuántica
- La nanofotónica integrada
- Procesamiento de información cuántica
Sus antecedentes:
- Las computadoras cuánticas fotónicas actuales se enfrentan a limitaciones en el determinismo, el recuento de fotones y la programabilidad de la puerta.
- Existe una creciente demanda de aplicaciones prácticas de computación cuántica que impulsan la innovación en el hardware.
Objetivo del estudio:
- Presentar un sistema completo de hardware y software para ejecutar operaciones de circuito cuántico de muchos fotones.
- Para superar las limitaciones de las plataformas fotónicas de computación cuántica existentes.
- Para permitir la ejecución remota de algoritmos cuánticos complejos.
Principales métodos:
- Desarrollo de un chip nanofotónico integrado programable que funcione a temperatura ambiente.
- Integración con un sistema de control totalmente automatizado para el acceso remoto.
- Utilizando estados de vacío fuertemente comprimidos y altas tasas de muestreo para la detección de múltiples fotones.
Principales resultados:
- Demostración de las operaciones de circuito cuántico con hasta ocho modos.
- Se han logrado tasas y números de detección de fotones múltiples que superan a los sistemas ópticos cuánticos programables anteriores.
- Verificación de la no clásicalidad de la salida del dispositivo.
Conclusiones:
- La plataforma desarrollada sirve como una plataforma de lanzamiento escalable para tecnologías cuánticas fotónicas.
- Se realizaron con éxito demostraciones de prueba de principio de muestreo de bosones gaussianos, espectros vibrónicos moleculares y similitud de gráficos.
- El sistema permite cálculos cuánticos generales y programables a nivel de muchos fotones.
Videos de Conceptos Relacionados
Photoelectric Effect
When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...
Photoluminescence: Applications
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
Semiconductors
There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
Field Effect Transistor
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...
Design Example: Capacitance Multiplier Circuit
In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
iChip
The cultivation of environmental microorganisms has long been hindered by the inability to replicate complex native conditions in vitro. The isolation chip (iChip) addresses this limitation by facilitating the growth of previously uncultivable microorganisms through in situ incubation. Designed for high-throughput microbial cultivation, the iChip comprises hundreds of microchambers, each capable of housing a single microbial cell. These microchambers are loaded with a mixture of molten agar and...

