paper

Quantum information cannot be split into complementary parts

arXiv:quant-ph/0503168 · doi:10.1016/j.physleta.2005.11.041

Abstract

We prove a new impossibility for quantum information (the no-splitting theorem): an unknown quantum bit (qubit) cannot be split into two complementary qubits. This impossibility, together with the no-cloning theorem, demonstrates that an unknown qubit state is a single entity, which cannot be cloned or split. This sheds new light on quantum computation and quantum information.

9 pages, 1 figure

Quantum information cannot be split into complementary parts · wovepaper