Unless it is carefully isolated, a quantum system will “leak” information into its surroundings. This can destroy delicate states such as superposition and entanglement.
SHORTLISTED | Quantum Shorts 2012
Who killed Schroedinger’s cat?
Directed by Giannicola Scarpa – written by Cristina-Iulia Bucur and Giannicola Scarpa – with Harry Buhrman, Juan Martinez and Deniz Uğurlar