Relaxation of sodium hyperfine populations in wall collisions

Haverkort, J.E.M.; Hoogeveen, Ruud W. M.; Woerdman, J. P.

doi:10.1016/0030-4018(87)90229-x

Cited by 8 publications

(2 citation statements)

References 22 publications

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“…In a confined geometry, such as in a hollow-core fibre, the atoms should ideally be optically pumped during the time taken for the atoms to traverse the optical mode in the fibre. Collisions with the fibre wall can, with some probability, thermalize the hyperfinepolarization of the atoms [38]. For cesium, the thermalization probability per collision is approximately one half, although this number is not well constrained [39].…”

Section: Optical Pumpingmentioning

confidence: 99%

Efficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memory

et al. 2013

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The generation of large multiphoton quantum states-for applications in computing, metrology and simulation-requires a network of highefficiency quantum memories capable of storing broadband pulses. Integrating these memories into a fibre offers a number of advantages towards realizing this goal: strong light-matter coupling at low powers, simplified alignment and compatibility with existing photonic architectures. Here, we introduce a largecore kagome-structured hollow-core fibre as a suitable platform for an integrated fibre-based quantum memory with a warm atomic vapour. We demonstrate, for the first time, efficient optical pumping in such a system, where 90 ± 1% of atoms are prepared in the ground state. We measure high optical depths (3 × 10 4 ) and narrow homogeneous linewidths (6 ± 2 MHz) that do not exhibit significant

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Section: Optical Pumpingmentioning

confidence: 99%

Efficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memory

et al. 2013

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“…In the H and D targets, the dominant relaxation mechanisms for the potassium (K) polarization are probably the result of wall interactions. Coatings have successfully improved the situation (16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28). For the spin-exchange pumped 3 He targets, Rb spin relaxation is dominated by collisions with Rb atoms, 3 He, and N 2 and-to a lesser degree-by wall interactions (29)(30)(31)(32)(33).…”

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confidence: 99%