Multi-cell apparatus and method for single ion addressing

1. An apparatus for single ion addressing, comprising:

a first cell configured to:

set a frequency, intensity, and a polarization of a laser; and

shutter the laser;

a second cell configured to align the shuttered laser to an ion in an ion trap such that the ion fluoresces light and/or performs a quantum operation; and

a third cell configured to detect the light fluoresced from the ion.

2. The apparatus of claim 1 , wherein:

the second cell is inside a vacuum; and

the first and third cells are outside the vacuum.

3. The apparatus of claim 1 , wherein the apparatus includes an electro-optic modulator separate from the first cell and configured to prepare a state of the laser before the laser enters the first cell.

4. The apparatus of claim 1 , wherein the first cell includes an electro-optic modulator configured to prepare a state of the laser.

5. The apparatus of claim 1 , wherein the first cell includes:

an acousto-optic modulator configured to set the frequency and intensity of the laser and shutter the laser; and

a Pockels cell configured to set the polarization of the laser.

6. The apparatus of claim 1 , wherein the third cell includes an array of photo-multiplier tubes configured to detect the light fluoresced from the ion.

7. The apparatus of claim 1 , wherein the first, second, and third cells are separate cells.

8. A method for single ion addressing, comprising:

preparing a state of a laser;

shuttering the laser using a first cell;

aligning the shuttered laser to an ion in an ion trap using a second cell such that the ion fluoresces light and/or performs a quantum operation; and

detecting the light fluoresced from the ion using a third cell.

9. The method of claim 8 , wherein aligning the shuttered laser to the ion in the ion trap using the second cell includes:

focusing the shuttered laser and directing the shuttered laser at a mirror of the second cell using a lens of the second cell; and

directing the shuttered laser at the ion in the ion trap using the mirror of the second cell.

10. The method of claim 8 , wherein the method includes terminating the shuttered laser using the second cell after aligning the shuttered laser to the ion in the ion trap.

11. The method of claim 8 , wherein the method includes splitting the laser into a plurality of components after preparing the state of the laser and before shuttering the laser.

12. The method of claim 8 , wherein the method includes splitting the laser into a plurality of components before preparing the state of the laser and shuttering the laser.

13. The method of claim 8 , wherein the laser is a Doppler cooling laser.

14. The method of claim 8 , wherein the laser is a quantum operation laser.

15. An apparatus for single ion addressing, comprising:

a first cell configured to:

set a frequency and a polarization of a laser; and

shutter the laser;

a second cell inside a vacuum and configured to:

align the shuttered laser to an ion in an ion trap such that the ion fluoresces light and/or performs a quantum operation; and

receive the light fluoresced from the ion; and

a third cell configured to:

receive the light fluoresced from the ion from the second cell; and

detect the light fluoresced from the ion.

16. The apparatus of claim 15 , wherein the first and the third cells are outside the vacuum.

17. The apparatus of claim 15 , wherein the second cell includes:

a first lens configured to focus the shuttered laser;

a mirror configured to direct the focused shuttered laser at the ion in the ion trap such that the ion fluoresces light and/or performs a quantum operation; and

a second lens configured to receive the light fluoresced from the ion.

18. The apparatus of claim 17 , wherein the second cell includes an additional mirror configured to direct the laser at a beam dump after the laser is focused at the ion in the ion trap.

19. The apparatus of claim 15 , wherein the apparatus includes:

a first fiber bundle configured to split the laser into a plurality of fibers before the laser enters the first cell; and

a second fiber bundle configured to:

bundle the plurality of fibers before the laser enters the vacuum; and

re-split the plurality of fibers after the laser enters the vacuum and before the laser enters the second cell.

20. The apparatus of claim 19 , wherein the second fiber bundle is configured to:

bundle an additional plurality of fibers having the light fluoresced from the ion before the light fluoresced from the ion exits the vacuum; and

re-split the additional plurality of fibers after the light fluoresced from the ion exits the vacuum and before the light fluoresced from the ion enters the third cell.