Quantum mechanics and psychoanalysis entered the intellectual scene at roughly the same time. Several quantum physicists, shocked by the apparent consequences of their work and the strange irrationality at the heart of reality, sought the aid of psychoanalysts such as Freud and Jung to help them cope with their disturbing insights. The connection between quantum mechanics and psychoanalysis may not end there. There may be a deep link between the human mind, the unconscious and quantum reality we perceive. Writes Max Rogers, Jim Baggott and the late John Heilborn.