TY - JOUR PB - American Physical Society ID - 10.1103/PhysRevFocus.16.11 TI - Two Quantum States for the Price of One JF - Physical Review Focus JA - Phys. Rev. Focus J1 - FOCUS VL - 16 IS - SP - 11 EP - PY - 2005/10/06/ UR - http://link.aps.org/doi/10.1103/PhysRevFocus.16.11 A1 - Lindley, David ER -