The No Cloning Theorem

by Super User, 3 months ago
0 0
Support MinutePhysics on Patreon:

Three Blue One Brown:

Why you can’t clone Schrödinger’s cat: this video presents the full proof of the “No Cloning” Theorem in Quantum Mechanics – without any fancy math! (stereotypical qubit has been replaced with Schrödinger’s cat).

The full proof relies on the linearity of quantum (aka unitary) transformations, and the tensor product of multiple systems, to show that perfect cloning is impossible (though teleportation is allowed)

Thanks to everyone who supports MinutePhysics on Patreon!
Link to Patreon supporters here:


The No-Cloning Theorem:

MinutePhysics on Schrödinger’s Cat:

Original No-Cloning Paper by Wootters and Zurech:

Original “Beyond No-Cloning” (ie, no-cloning workarounds) paper by Buzek & Hillery:

Optimal Quantum Cloning paper:

Optimal Quantum Cloning paper II:

Quantum Cloning:\_cloning

The History of Schrödinger’s (& Einstein’s) Cat:

The Stability of Black Powder (from the Civil War!):

Proof by contradiction:\~rmuhamma/Philosophy/Logic/ProofTheory/proof\_by\_contradictionExamples.htm

MinutePhysics is on Google+ -
And facebook -
And twitter - @minutephysics

Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!

Created by Henry Reich
Music by Nathaniel Schroeder