Extended Data Fig. 2: Example of a pulse sequence.
From: Encoding a qubit in a trapped-ion mechanical oscillator
This pulse sequence is used during process tomography of the T-gate. The blue line shows laser pulses based on the 397 nm laser used for cooling and fluorescence detection of the internal states. The red line shows manipulations using the 729 nm laser used for SDF pulses as well as carrier rotations, while the black line denotes tickling pulses implemented using an RF voltage. The upper row shows the sequence used for preparing \({\left|0\right\rangle }_{L}\), including initial cooling, squeezed state preparation (‘squeezed pumping’) and modular variable measurements (‘Mod(l)’). The lower row shows first the implementation of \({\hat{U}}_{L}^{X}({\rm{\pi }}/2,{\rm{\pi }}/2)\) by gate teleportation (creating \({|{\Phi }_{+}\rangle }_{L}\)), followed by application of a teleported T-gate (‘\(\hat{T}\)-gate’) and subsequently the readout of the states.
