Nanogallery
Nano-news Nanogallery
TODAY DECEMBER 12, 2018
2011-07-19

Schrodinger chameleon

Schrodinger chameleon The well known though experiment, named Schrodinger cat, illustrates the paradox of quantum mechanics, which requires that any superposition of two allowed states is also a possible state of a system. Thus one of the fathers of the Quantum Mechanics, Erwin Schrodinger, proposed that a cat could be, theoretically speaking, prepared in a state of superposition of being dead and alive at the same time. Modern experimental science is unable to create such strange cats.

Yet, experimentalists have succeeded in creating superpositions of photons with different colors. In the classical world one thinks that a photon is an electromagnetic wave that has certain frequency. In the quantum world a photon can have a few frequencies at once, thanks to the Schrodinger's principle of quantum superposition. Since the frequency of the photon defines its color, the superposition photon has more than one distinct color at once. Thus it can be termed ''Schrodinger chameleon''.

NIST research group led by Aumentado has created an "optics table on a chip", which is a thin-film two-dimensional superconducting circuit on a sapphire substrate, less than one inch in size. The created superconducting device is an analogue of the Fabry-Perot resonator, but it works with microwave photons. The superposition photon with a superposition frequency or color is prepared by so called "artificial atom". The artificial atom is also a superconducting structure, which is similar to a SQUID or a superconducting qubit. The resonance frequency of the Fabry-Perot resonator depends on the state of the qubit. Since the SQUID qubit can be in a superposition of two distinct sates (this is the main property of a qubit), the resonator itself can be prepared in a superposition of two resonance frequencies. Thus it stabilizes superposition-photons. The results are published in Nature Physics (E. Zakka-Bajjani, F. Nguyen, M. Lee, L.R. Vale, R.W. Simmonds and J. Aumentado. Quantum superposition of a single microwave photon in two different 'colour' states. Nature Physics. Posted online July 3, 2011.)


Schrodinger chameleon

  All news
Related news:
  • Quantum cantilevers
  • Van der Waals force and von Klitzing resistance in metallic nano-contacts
  • Metallic Cluster Screen Electric Field Well
  • Single atoms placed on graphene and observed in TEM in real time
  • David LaVan and cowirkers Model Eel Electric Cells
  • The cylindrical superstructures are composed of silver nanoparticles with V-shaped amphiphilic arms. The short rod-like and spherical assemblies are made of gold nanoparticles with the same V-shaped amphiphilic arms.  The self-assembly occurs upon slow addition of water to solution of nanoparticles in organic solvent called tetrahydrofuran. The resulting mixture is then dialyzed against pure water in order to remove organic solvent and obtain a pure aqueous solution of the superstructures (they remain in water without any precipitation, just like micelles).
    Nanowerk Nanotechnology Portal
    http://www.nanowerk.com

    Nanohedron
    http://www.nanohedron.com

    Biomolecules
    http://perso.curie.fr/Simon.Sc..


    Nano-news | Nanosuperconductors | Nanofabrication | Nanophenomena | Journals | Web directory | contacts

    20042012 Copyright by Nanogallery.info
    Design by UpMrk