Quantum phase gate and controlled entanglement with polar molecules

Research paper by Eric Charron, Pérola Milman, Arne Keller, Osman Atabek

Indexed on: 01 Feb '07Published on: 01 Feb '07Published in: Quantum Physics


We propose an alternative scenario for the generation of entanglement between rotational quantum states of two polar molecules. This entanglement arises from dipole-dipole interaction, and is controlled by a sequence of laser pulses simultaneously exciting both molecules. We study the efficiency of the process, and discuss possible experimental implementations with cold molecules trapped in optical lattices or in solid matrices. Finally, various entanglement detection procedures are presented, and their suitability for these two physical situations is analyzed.