Quantum Entanglement & Spooky Action at a Distance
Δημοσιεύτηκε στις 12 Ιαν 2015
Does quantum entanglement make faster-than-light communication possible?
What is NOT random? http://bit.ly/NOTrandoVe
First,
I know this video is not easy to understand. Thank you for taking the
time to attempt to understand it. I've been working on this for over six
months over which time my understanding has improved. Quantum
entanglement and spooky action at a distance are still debated by
professors of quantum physics (I know because I discussed this topic
with two of them).
Does hidden information (called hidden
variables by physicists) exist? If it does, the experiment violating
Bell inequalities indicates that hidden variables must update faster
than light - they would be considered 'non-local'. On the other hand if
you don't consider the spins before you make the measurement then you
could simply say hidden variables don't exist and whenever you measure
spins in the same direction you always get opposite results, which makes
sense since angular momentum must be conserved in the universe.
Everyone
agrees that quantum entanglement does not allow information to be
transmitted faster that light. There is no action either detector
operator could take to signal the other one - regardless of the choice
of measurement direction, the measured spins are random with 50/50
probability of up/down.
Special thanks to:
Prof. Stephen Bartlett, University of Sydney: http://bit.ly/1xSosoJ
Prof. John Preskill, Caltech: http://bit.ly/1y8mJut
Looking Glass Universe: http://bit.ly/17zZH7l
Physics Girl: http://bit.ly/PhysGirl
MinutePhysics: http://bit.ly/MinPhys
Community Channel: http://bit.ly/CommChannel
Nigel, Helen, Luke, and Simon for comments on earlier drafts of this video.
Filmed in part by Scott Lewis: http://google.com/+scottlewis
Music by Amarante "One Last Time": http://bit.ly/VeAmarante
What is NOT random? http://bit.ly/NOTrandoVe
First,
I know this video is not easy to understand. Thank you for taking the
time to attempt to understand it. I've been working on this for over six
months over which time my understanding has improved. Quantum
entanglement and spooky action at a distance are still debated by
professors of quantum physics (I know because I discussed this topic
with two of them).
Does hidden information (called hidden
variables by physicists) exist? If it does, the experiment violating
Bell inequalities indicates that hidden variables must update faster
than light - they would be considered 'non-local'. On the other hand if
you don't consider the spins before you make the measurement then you
could simply say hidden variables don't exist and whenever you measure
spins in the same direction you always get opposite results, which makes
sense since angular momentum must be conserved in the universe.
Everyone
agrees that quantum entanglement does not allow information to be
transmitted faster that light. There is no action either detector
operator could take to signal the other one - regardless of the choice
of measurement direction, the measured spins are random with 50/50
probability of up/down.
Special thanks to:
Prof. Stephen Bartlett, University of Sydney: http://bit.ly/1xSosoJ
Prof. John Preskill, Caltech: http://bit.ly/1y8mJut
Looking Glass Universe: http://bit.ly/17zZH7l
Physics Girl: http://bit.ly/PhysGirl
MinutePhysics: http://bit.ly/MinPhys
Community Channel: http://bit.ly/CommChannel
Nigel, Helen, Luke, and Simon for comments on earlier drafts of this video.
Filmed in part by Scott Lewis: http://google.com/+scottlewis
Music by Amarante "One Last Time": http://bit.ly/VeAmarante
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