Single alkali-metal atoms in arrays of optical dipole traps represent a quantum register that can be used for quantum computation and simulation based on short-term Rydberg excitations, which switch the interactions between qubits. To load single atoms into optical dipole traps and then detect them by resonance fluorescence, lenses with a large numerical aperture (NA > 0.5) inside a vacuum chamber and expensive EMCCD cameras are commonly used. We present our recent experimental results on demonstrating the trapping of single 87Rb atoms using a long-focus objective lens with a low numerical aperture (NA = 0.172) placed outside the vacuum chamber, and detecting single atoms with a low-cost sCMOS camera. We also present our current results on implementing a single-qubit gate based on optical pumping and subsequent microwave transition between two hyperfine sublevels of a single 87Rb atom with fidelity near 95%.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 9 Apr 2021|
|Event||21st International Conference and School on Quantum Electronics: Laser Physics and Applications, ICSQE 2020 - Virtual, Online|
Duration: 21 Sep 2020 → 25 Sep 2020
- 1.03 PHYSICAL SCIENCES AND ASTRONOMY