2016
DOI: 10.3390/technologies4010004
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Single Atoms Preparation Using Light-Assisted Collisions

Abstract: Abstract:The detailed control achieved over single optically trapped neutral atoms makes them candidates for applications in quantum metrology and quantum information processing. The last few decades have seen different methods developed to optimize the preparation efficiency of single atoms in optical traps. Here we review the near-deterministic preparation of single atoms based on light-assisted collisions and describe how this method can be implemented in different trap regimes. The simplicity and versatili… Show more

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Cited by 8 publications
(5 citation statements)
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References 62 publications
(104 reference statements)
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“…This clearly exceeds the classical percolation threshold (indicating the transition to long-range connectivity) for a 2D triangular lattice expected for an occupation probability of 0.5. It is also close to the state-of-the-art in single-atom preparation in optical microtraps using lightassisted collisions, where efficiencies up to 90% have re- cently been achieved [35]. Furthermore, the fall-off of the efficiency with n for high n is slow, e.g., the efficiency at n = 60 is still 80%.…”
Section: Initialisation Of Collective Spin Statessupporting
confidence: 71%
“…This clearly exceeds the classical percolation threshold (indicating the transition to long-range connectivity) for a 2D triangular lattice expected for an occupation probability of 0.5. It is also close to the state-of-the-art in single-atom preparation in optical microtraps using lightassisted collisions, where efficiencies up to 90% have re- cently been achieved [35]. Furthermore, the fall-off of the efficiency with n for high n is slow, e.g., the efficiency at n = 60 is still 80%.…”
Section: Initialisation Of Collective Spin Statessupporting
confidence: 71%
“…The number of atoms in the trap is limited to either zero or one by the collisional blockade mechanism [9,25]: when pairs of rubidium atoms collide in the presence of red-detuned cooling light, they can be photoexcited to form a molecule and are lost from the trap. This is confirmed in figure 2(c), which shows a negligible probability of observing two atoms.…”
Section: Trapping and Imaging Single Atomsmentioning
confidence: 99%
“…1 This light creates an interaction between two rubidium atoms which transfers enough energy to the atom pair for exactly one atom to get ejected from the tweezer. 10 Specifically, the light is blue-detuned by 85 MHz from the D1-transition in rubidium-85 and produces an unstable Rb 2 molecule, 10 which upon decay transfers the required energy to the atoms. This process continues until there is only one atom left, at which point atom ejection stops because no atom pair is present.…”
Section: Atom Preparationmentioning
confidence: 99%