Kind: captions
Language: en
arguably the most important change in
quantum physics in recent decades is a
deeper understanding of a special kind
of shared State called quantum
entanglement imagine a machine that
spits out pairs of
coins which on the surface look like
ordinary
coins if you flip one it comes up heads
or tails about 50% of the time nothing
strange
there but using a pair of coins fresh
out of the machine you flip one it comes
up heads and then the other it also
comes up
heads that could just be
locked so then you do the same thing
with another fresh pair this time the
first coin is Tails and so is the second
agreement
again so you flip another
pair and then a
another and
another pair after pair the two coins
always agree on the first
flip what's going
on maybe the first flipped coin once it
comes up heads or tails is somehow
telling the other coin how to
behave to make sure that can't happen
you separate the coins by flying one to
the Moon and flip them at the same time
so no message could possibly travel
between them still they come up in
agreement it all sounds too strange to
be true but particles really can behave
like those
coins in quantum physics it's called
entanglement entanglement is really just
a stubborn St
exciting Andor frustrating fact that
takes a long time to try to get our
heads around entanglement is certainly
the most interesting and the most
confusing aspect of quantum it's one of
these things we don't see you know
naively in the world around us but it is
taking place deep in the materials that
exist around us every
day and while you probably won't come
across a coin entangler anytime
soon in the lab scientists routinely
generate pairs of entangled particles
that share a Quantum state so fully they
can be thought of as one Quantum
object you simply can't differentiate
between them it's just one pure State
it's as though you have a single entity
that's spatially separated without a
physical
connection entangled particles remain
connected even when they're separated by
hundreds of
miles likely far
more so does that mean it can go between
here and Andromeda probably the
equations give us no reason to think it
wouldn't entanglement sounds
bizarre Einstein derided the idea as
spooky action at a
distance but since the
1970s experiment after experiment has
confirmed entanglement is a real Quantum
phenomenon
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