Towards single-atom detection on a chip

Details Towards single-atom detection on a chip Towards single-atom detection on a chip

2002-10-11

arxiv.org/abs/quant-ph/0210090v1

Phys. Rev. A 67, 043806 (2003)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.67.043806

We investigate the optical detection of single atoms held in a microscopic atom trap close to a surface. Laser light is guided by optical fibers or optical micro-structures via the atom to a photo-detector. Our results suggest that with present-day technology, micro-cavities can be built around the atom with sufficiently high finesse to permit unambiguous detection of a single atom in the trap with 10 $\mu$s of integration. We compare resonant and non-resonant detection schemes and we discuss the requirements for detecting an atom without causing it to undergo spontaneous emission.

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