A Nobel Laureate explains quantum entanglement and teleportation and why Einstein was wrong
about the nature of reality What is the true nature of reality? To find out Nobel Laureate
Anton Zeilinger takes us (along with his fictional students Alice and Bob) on a voyage through
a quantum wonderland explaining entanglement teleportation time-travel paradoxes and why our
view of the world must change. Originally published in America in 2012 a new Afterword in the
light of the author's 2022 Nobel Prize means the book brings readers up-to-date with the most
recent developments in quantum teleportation. This describes the author's collaboration to
perform the first intercontinental video call encrypted using quantum cryptography and how
Chinese scientists teleported entangled quantum states to an orbiting satellite. Readers also
learn how both volunteer humans and astronomical objects billions of light years away have been
part of experiments to conclusively prove that quantum states cannot provide a full description
of reality at a local level. Einstein had always refused to accept aspects of quantum theory
deriding the notion of instantaneous communication between faraway 'entangled' particles as
'spooky action at a distance'. However this playful yet deep book takes readers through a
series of ingenious experiments conducted in various locations that demonstrate entanglement is
indeed real and speculates that information is an essential part of reality. From a dank
sewage tunnel under the River Danube to the balmy air between a pair of mountain peaks in the
Canary Islands with various time-travel paradoxes explained along the way the author and his
fictional physics students Alice and Bob demonstrate the true nature of quantum entanglement
and teleportation using photons or light quanta created by laser beams. The ideas described
have laid the foundations for a new era of quantum technology including the development of
quantum computers and much more.
