PRACTICAL CREATION AND DETECTION OF POLARIZATION BELL STATES USING PARAMETRIC DOWN-CONVERSION
PRACTICAL CREATION AND DETECTION OF POLARIZATION BELL STATES USING PARAMETRIC DOWN-CONVERSION
The generation and detection of maximally-entangled two-particle states, `Bell states,' are crucial tasks in many quantum information protocols such as cryptography and teleportation. Unfortunately, they require strong inter-particle interactions lacking in optics. For this reason, it has not previously been possible to perform complete Bell state determination in optical systems. …