Many-ion Addressability

Error correction requires control over greater numbers of qubits than have previously been independently manipulated in a single system. To gain many-qubit control, we require a method to optically address many ions simultaneously. As a path toward meeting this challenge, Duke University has developed micro-electro-mechanical system (MEMS) mirrors that have been demonstrated to control multiple optical beams appropriate for addressing individual ions. More information on these MEMS can be found in references [1-3] below.

Concurrently, we are investigating the use of a multi-channel acousto-optic modulator (AOM). Advantages could include reduced optical phase error between qubits, fast switching, and less beam profile distortion. This is a joint effort between Duke, University of Maryland, and Harris, Inc.


[1] Kim, Changsoon, Caleb Knoernschild, Bin Liu, and Jungsang Kim. IEEE Journal of selected topics in Quantum Electronics 13, 322 (2007).

[2] Knoernschild, Caleb, Changsoon Kim, Bin Liu, Felix P. Lu, and Jungsang Kim. Optics letters 33 273 (2008).

[3] Crain, S., E. Mount, S. Baek, and J. Kim. Applied Physics Letters 105, 181115 (2014).