Using light-assisted collisions to consistently isolate individual atoms for quantum information processing

Grünzweig, T.; McGovern, M.; Hilliard, Andrew J.; Andersen, Mikkel F.

doi:10.1007/s11128-011-0304-4

Cited by 3 publications

(1 citation statement)

References 51 publications

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“…This has led to demonstration of 86% single atom loading probability. Further optimization may be possible (Grünzweig et al (2011)). We proposed (Saffman and Walker (2002)) to use the Rydberg blockade effect to select a single atom from an N atom ensemble and thereby push the single atom loading probability close to 100 %.…”

Section: Deterministic Loading Of Optical Latticesmentioning

confidence: 99%

Entanglement of Two Atoms Using Rydberg Blockade

Walker

Saffman

2012

Advances in Atomic, Molecular, and Optical Physics

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Over the past few years we have built an apparatus to demonstrate the entanglement of neutral Rb atoms at optically resolvable distances using the strong interactions between Rydberg atoms. Here we review the basic physics involved in this process: loading of single atoms into individual traps, state initialization, state readout, single atom rotations, blockade-mediated manipulation of Rydberg atoms, and demonstration of entanglement.

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Section: Deterministic Loading Of Optical Latticesmentioning

confidence: 99%

Entanglement of Two Atoms Using Rydberg Blockade

Walker

Saffman

2012

Advances in Atomic, Molecular, and Optical Physics

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A technique for individual atom delivery into a crossed vortex bottle beam trap using a dynamic 1D optical lattice

Dinardo

Anderson

2016

Review of Scientific Instruments

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We describe a system for loading a single atom from a reservoir into a blue-detuned crossed vortex bottle beam trap using a dynamic 1D optical lattice. The lattice beams are frequency chirped using acousto-optic modulators, which causes the lattice to move along its axial direction and behave like an optical conveyor belt. A stationary lattice is initially loaded with approximately 6000 atoms from a reservoir, and the conveyor belt transports them 1.1 mm from the reservoir to a bottle beam trap, where a single atom is loaded via light-assisted collisions. Photon counting data confirm that an atom can be delivered and loaded into the bottle beam trap 13.1% of the time.

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Improving the single atom probability by using the blue-detuned laser-assisted-collisions between the cold atoms trapped in the for-off-resonance trap

Diao¹,

Jun²,

Liu³

et al. 2014

Acta Phys. Sin.

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Using the light-assisted-collisions (LAC) and the feedback controlling loop on a quadrupole magnetic field, we have realized high probability of single atoms in the far-off-resonance trap (FORT). We analyzed the principle of LAC irradiated by a red-detuning laser or by a blue-detuning laser. And we also experimentally proved that using the red-detuned laser (the blue-detuned laser) we can realize 50% (80%) of single atom probability in the FORT. Using the feedback controlling loop, we realized 95% of single atom probability in the FORT, which opens a way for a two-dimensional FORT array. When the number of atom was zero, we decreased the gradient of the quadrupole magnetic field to quickly load atoms, and when we had more than one atom in the FORT, we switched on the blue-detuned laser to irradiate the atoms to play LAC. We measured the second-order coherence degree of the fluorescence photons emitted by the atom trapped in the FORT by using HBT scheme and found it was g(2)(τ=0)=0.08.

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Using light-assisted collisions to consistently isolate individual atoms for quantum information processing

Cited by 3 publications

References 51 publications

Entanglement of Two Atoms Using Rydberg Blockade

Entanglement of Two Atoms Using Rydberg Blockade

A technique for individual atom delivery into a crossed vortex bottle beam trap using a dynamic 1D optical lattice

Improving the single atom probability by using the blue-detuned laser-assisted-collisions between the cold atoms trapped in the for-off-resonance trap

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