none
none

DIAMOND QUANTUM COMPUTING?

14-07-2016
by 
in 

Researchers have designed a device that could one day form the building blocks of quantum information processing systems by carefully placing a tiny piece of diamond within a few nanometers of a carbon nanotube, and then sending an electric current through said nanotube.

In their recent study, they have shown that the electrified nanotube's mechanical vibrations couple to the magnetic (or spin) properties of defects in the diamond. This coupling allows for the quantum states of the nanotube and diamond to be transferred to each other as well as to a second diamond positioned several micrometers away.

The researchers, Peng-Bo Li et al., have published a paper on the new hybrid quantum device in a recent issue of Physical Review Letters.

Diamonds and carbon nanotubes, which are both carbon allotropes, each have their own unique properties that make building such a device possible.

Diamond contains defects called nitrogen-vacancy centers that emit highly coherent bright red light. The defects' optical properties can be well-controlled so that they occupy one of two distinct states, which enables the defects to act as qubits.

Carbon nanotubes, for their part, are well-known for their highly advantageous mechanical and electrical properties.

Both diamonds and carbon nanotubes have been widely studied as separate entities, but rarely together as an integrated device.

"This device could be used to mechanically address quantum logic gates based on electric spins and could serve as novel nanoscale sensors for detecting tiny pressure, temperature, electric, and magnetic-field changes in the physical and life sciences," Li said.

Related news & editorials

  1. 21.11.2017
    21.11.2017
    by      In
    The Instant Access Spandeck system is a modular work platform system that provides a full range of simple, safe and cost-effective solutions to complicated and difficult access requirements.
    Spandeck is a lightweight aluminium walkway bridge, work platform and staging system in one versatile unit.... Read More
  2. 21.11.2017
    21.11.2017
    by      In
    Beacon Lighting reckons that Australian homes and businesses can enjoy easy, breezy living all year round with its new ceiling fan collection. The range features new with inspired designs and allows users to reduce their energy costs.
    With power costs continuing to rise, a ceiling fan is becoming... Read More
  3. 21.11.2017
    21.11.2017
    by      In
    3D manufacturing solution specialist Flecknoe is working with manufacturers to drive efficiency and productivity in thermoforming and vacuum forming plastics production processes.
    With more than 30 years experience designing, building and supporting manufacturing machines and processes for more... Read More
  4. 21.11.2017
    21.11.2017
    by      In
    Tennant offers all the technology required to keep carpeted areas clean and in service, with eight different types of vacuum cleaners and innovative ReadySpace cleaning technologies.
    Tennant’s vacuum cleaners feature an advanced multi-stage HEPA filtration system that filters 99.98% of particles... Read More