Artificial Atoms Created for Quantum Computing (Download PDF)


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Scientists have created artificial atoms that generate single photon, to develop all-optical quantum computing. An artificial atom is an object with discrete energy levels for electrons. Semiconductor quantum dot is example of this.

Quantum dots are tiny semiconductor particles with size in few Nano-metres. They possess optical and electronic properties that differ from larger LED particles.

They have properties intermediate between bulk semiconductors and discrete atoms or molecules.

Image Show Atom in Open Space

Image Show Atom in Open Space

Image Show Atom in Open Space

Artificial Atoms

  • The artificial atoms were created by drilling holes into a thin 2 dimensional sheet of hexagonal boron nitride with gallium focused ion beam.

  • These artificial atoms work in air and at room temperature.

  • The researchers are looking forward to pattern these single photon emitters into circuits or networks on a microchip so that they can talk to each other.

  • The artificial atoms will enable lots of new and powerful technologies.

  • They could also be used for safer, more secure, totally private communications and much more powerful computers that could design life-saving drugs.

Earlier Discovery

  • The artificial atoms were discovered three years ago in flakes of two dimensional hexagonal boron nitride on a single insulating layer of alternating boron and nitrogen.

  • Atoms in a lattice are also known as white graphene.

  • The traditional approaches mainly focused upon using atoms in quantum research were based on capturing atoms or ions, and manipulating their spin with lasers so they exhibit quantum superposition, or the ability to be in a simultaneous combination of “off” and “on” states.

  • In the white graphene edges were created earlier on by drilling circles 500 nanometers wide and four nanometers deep.

  • Thereafter the devices were annealed in oxygen at 850 to remove carbon and other residual material and to activate the emitters.

Quantum Computing

  • Quantum Computing involves use of quantum mechanical phenomena to perform computation. Superposition and Enlargement are such phenomenas.

  • The deep understanding of universe is also possible through quantum computation.

  • The images so obtained have also detailed how exactly the radiations get distorted while passing through the corona.

  • In the most recent developments in this field TIFR-NCRA Pune team’s images of the Sun has broadened the understanding of Solar Flares.

  • Quantum computers can perform such factoring exponentially more efficiently than digital computers, meaning such security methods will soon become obsolete.

- Published/Last Modified on: June 27, 2019

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