Qubits that never interact could exhibit past-future entanglement
Monday, July 30, 2012 - 10:31
in Physics & Chemistry
(Phys.org) -- Typically, for two particles to become entangled, they must first physically interact. Then when the particles are physically separated and still share the same quantum state, they are considered to be entangled. But in a new study, physicists have investigated a new twist on entanglement in which two qubits become entangled with each other even though they never physically interact.