Abstract
We experimentally demonstrate polarization entanglement for squeezed vacuum pulses containing more than photons. We also study photon-number entanglement by calculating the Schmidt number and measuring its operational counterpart. Theoretically, our pulses are the more entangled the brighter they are. This promises important applications in quantum technologies, especially photonic quantum gates and quantum memories.
- Received 18 June 2012
DOI:https://doi.org/10.1103/PhysRevLett.109.150502
© 2012 American Physical Society