Microwave quantum logic gates for trapped ions

Details Microwave quantum logic gates for trapped ions Microwave quantum logic gates for trapped ions

2011-04-18

arxiv.org/abs/1104.3573v3

Nature 476, 181 (2011)

Physics

Quantum Physics

22 pages, 4 figures, accepted as a letter to Nature

Scientific paper

10.1038/nature10290

Control over physical systems at the quantum level is a goal shared by scientists in fields as diverse as metrology, information processing, simulation and chemistry. For trapped atomic ions, the quantized motional and internal degrees of freedom can be coherently manipulated with laser light. Similar control is difficult to achieve with radio frequency or microwave radiation because the essential coupling between internal degrees of freedom and motion requires significant field changes over the extent of the atoms' motion. The field gradients are negligible at these frequencies for freely propagating fields; however, stronger gradients can be generated in the near-field of microwave currents in structures smaller than the free-space wavelength. In the experiments reported here, we coherently manipulate the internal quantum states of the ions on time scales of 20 ns. We also generate entanglement between the internal degrees of freedom of two atoms with a gate operation suitable for general quantum computation. We implement both operations through the magnetic fields from microwave currents in electrodes that are integrated into the micro-fabricated trap structure and create an entangled state with fidelity 76(3) %. This approach, where the quantum control mechanism is integrated into the trapping device in a scalable manner, can potentially benefit quantum information processing, simulation and spectroscopy.

Affiliated with

Also associated with

No associations

Rating

Microwave quantum logic gates for trapped ions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Microwave quantum logic gates for trapped ions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microwave quantum logic gates for trapped ions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-72705