Quantum Technology Research

Quantum entanglement is the phenomenon that occurs
when a group of particles are generated, interact, or share
spatial proximity in a way such that the quantum state of
each particle of the group cannot be described
independently of the state of the others, including when the
particles are separated by a large distance. The topic of
quantum entanglement is at the heart of the disparity
between classical and quantum physics : entanglement is a
primary feature of quantum mechanics not present in
classical mechanics. Measurements of physical properties such as position,
momentum , spin, and polarization performed on entangled
particles can, in some cases, be found to be perfectly
correlated . For example, if a pair of entangled particles is
generated such that their total spin is known to be zero, and
one particle is found to have clockwise spin on a first axis,
then the spin of the other particle, measured on the same
axis, is found to be anticlockwise. However, this behavior
gives rise to seemingly paradoxical effects: any
measurement of a particle’s properties results in an
apparent and irreversible wave function collapse of that
particle and changes the original quantum state. With
entangled particles, such measurements affect the
entangled system as a whole.