Cat in a hot tinned box

Two places at once?

First quantum experiment in space proposed by europeans.

Quantum Illumination.

Spooky quantum action with a twist.

Quantum encryption?

Quantum entanglement.

"Repent  Harlequin," said the Tick-tock man - © James Steranko

Faster than the speed of thought.

"...Strange events that Einstein himself called "spooky" might happen at least 10,000 times the speed of light, according to the latest attempt to understand them.
Atoms, electrons, and the rest of the infinitesimally tiny building blocks of the universe can behave rather bizarrely, going completely against the way life as we normally experience it. For example, objects can sometimes be said to exist in two or more places at the same time, or spin in opposite directions simultaneously.
One consequence of this murky realm of quantum physics is that objects can get linked together, such that what happens to one instantaneously has an effect on the other, a phenomenon dubbed "quantum entanglement." This holds true no matter how far apart these objects are from each other. "

EPR Paradox.

   One can even set up quite ridiculous cases. A cat is penned up in a steel chamber, along with the following device (which must be secured against direct interference by the cat): in a Geiger counter, there is a tiny bit of radioactive substance, so small that perhaps in the course of the hour, one of the atoms decays, but also, with equal probability, perhaps none; if it happens, the counter tube discharges, and through a relay releases a hammer that shatters a small flask of hydrocyanic acid. If one has left this entire system to itself for an hour, one would say that the cat still lives if meanwhile no atom has decayed. The psi-function of the entire system would express this by having in it the living and dead cat mixed or smeared out in equal parts. It is typical of these cases that an indeterminacy originally restricted to the atomic domain becomes transformed into macroscopic indeterminacy, which can then be resolved by direct observation. That prevents us from so naively accepting as valid a "blurred model" for representing reality. In itself, it would not embody anything unclear or contradictory. There is a difference between a shaky or out-of-focus photograph and a snapshot of clouds and fog banks.

    —Erwin Schrödinger, Die gegenwärtige Situation in der Quantenmechanik (The present situation in quantum mechanics), Naturwissenschaften
    (translated by John D. Trimmer in Proceedings of the American Philosophical Society)

Quantum tunneling.