Answer to Question #110165 in Quantum Mechanics for Asim E. Mahar

Question

What are applications of Schrödinger cat ?

Answer 1

• A "cat state" has been achieved with photons.
• A beryllium ion has been trapped in a superposed state.
• An experiment involving a superconducting quantum interference device ("SQUID") has been linked to the theme of the thought experiment: "The superposition state does not correspond to a billion electrons flowing one way and a billion others flowing the other way. Superconducting electrons move en masse. All the superconducting electrons in the SQUID flow both ways around the loop at once when they are in the Schrödinger's cat state."
• A piezoelectric "tuning fork" has been constructed, which can be placed into a superposition of vibrating and non vibrating states. The resonator comprises about 10 trillion atoms.
• An experiment involving a flu virus has been proposed.
• An experiment involving a bacterium and an electromechanical oscillator has been proposed.
• In quantum computing the phrase "cat state" sometimes refers to the GHZ state, wherein several qubits are in an equal superposition of all being 0 and all being 1.