Tuesday, October 16, 2012

1210.3669 (Jing Zhu et al.)

Implementation of Quantum Logic Gates Using Polar Molecules in Pendular
States
   [PDF]

Jing Zhu, Sabre Kais, Qi Wei, Dudley Herschbach, Bretislav Friedrich
We present a systematic approach to implementation of basic quantum logic gates operating on polar molecules in pendular states as qubits for a quantum computer. A static electric field prevents quenching of the dipole moments by rotation, thereby creating the pendular states; also, the field gradient enables distinguishing among qubit sites. Multi-Target Optimal Control Theory (MTOCT) is used as a means of optimizing the initial-to-target transition probability via a laser field. We give detailed calculations for the SrO molecule, a favorite candidate for proposed quantum computers. Our simulation results indicate that NOT, Hadamard and CNOT gates can be realized with high fidelity for such pendular qubit states.
View original: http://arxiv.org/abs/1210.3669

No comments:

Post a Comment