Quantum entanglement is a phenomenon in quantum mechanics where two or
more particles become correlated in such a way that the state of one
particle instantaneously influences the state of the other(s), regardless
of the distance between them. This phenomenon was famously referred to by
Einstein as "spooky action at a distance."
Here is a brief scientific explanation of quantum entanglement:
Superposition: In quantum mechanics, particles can exist in multiple
states simultaneously, a concept known as superposition. For example, an
electron can exist in a superposition of spin-up and spin-down states.
Entanglement Creation: When two or more particles become entangled,
their quantum states become linked. This means that the overall quantum
state of the system cannot be described independently for each particle;
instead, they form a single, correlated quantum state.
Quantum Measurement: When a measurement is made on one of the
entangled particles, its state becomes determined. Remarkably, this
instantaneously determines the state of the other entangled particle(s),
no matter how far apart they are. This instantaneous correlation happens
faster than the speed of light, seemingly violating classical notions of
causality.
Non-locality: Quantum entanglement exhibits non-locality, meaning
that the properties of one particle can be influenced by measurements
made on a distant entangled particle instantaneously.
The phenomenon of quantum entanglement is a fundamental aspect of quantum
mechanics and has been experimentally verified numerous times. It plays a
crucial role in various quantum technologies, including quantum computing
and quantum communication. Despite its successful experimental
confirmation, the conceptual implications of quantum entanglement
continue to be a subject of debate and intrigue in the field of physics.