Suppression of single cesium atom heating in a microscopic optical dipole trap for demonstration of an 852nm triggered single-photon source

Abstract

We investigate single cesium (Cs) atom heating owing to the momentum accumulation process induced by the resonant pulsed excitation in a microscopic optical dipole trap formed by a strongly focused 1064 nm laser beam. The heating depends on the trap frequency which restricts the maximum repetition rate of pulsed excitation. We experimentally verify the heating of a single atom and then demonstrate how to suppress it with an optimized pulsed excitation/cooling method. The typical trap lifetime of single Cs atom is extended from 108 +/- 6 us to 2536 +/- 31 ms, and the corresponding number of excitation increases from ~ 108 to ~ 360000. In applying this faster cooling method, we use the trapped single Cs atom as a triggered single-photon source at an excitation repetition rate of 10 MHz. The second-order intensity correlations of the emitted single photons are characterized by implementing Hanbury Brown and Twiss setup, and clear anti-bunching effect has been observed.

arXiv comment10 pages, 7 figures

References in corpus (20)

• Quantum information with Rydberg atoms
• Cavity-based quantum networks with single atoms and optical photons
• Observation of Rydberg blockade between two atoms
• Observation of collective excitation of two individual atoms in the Rydberg blockade regime
• Quantum State Engineering and Precision Metrology using State-Insensitive Light Traps
• 'Designer atoms' for quantum metrology
• Quantum interference between two single photons emitted by independently trapped atoms
• Controlled Single-Photon Emission from a Single Trapped Two-Level Atom
• Randomized benchmarking of single qubit gates in a 2D array of neutral atom qubits
• Room temperature stable single-photon source
• Energy distribution and cooling of a single atom in an optical tweezer
• Fast Ground State Manipulation of Neutral Atoms in Microscopic Optical Traps
• Coherent addressing of individual neutral atoms in a 3D optical lattice
• Fast Quantum State Control of a Single Trapped Neutral Atom
• Single atoms in a standing-wave dipole trap
• Nondestructive light-shift measurements of single atoms in optical dipole traps
• Achieving very long lifetimes in optical lattices with pulsed cooling
• Fiber-pigtailed optical tweezer for single-atom trapping and single-photon generation
• Hong-Ou-Mandel interference between triggered and heralded single photons from separate atomic systems
• High on/off ratio nanosecond laser pulses for a triggered single-photon source

Cited by in corpus (4)

• Measurement of magic-wavelength optical dipole trap by using the laser-induced fluorescence spectra of trapped single cesium atoms
• Two-way single-photon-level frequency conversion between 852nm and 1560nm for connecting cesium D2 line with the telecom C-band
• Influence of Laser Intensity Fluctuation on Single-Cesium Atom Trapping Lifetime in a 1064-nm Microscopic Optical Tweezer
• Amplification of nanosecond laser pulse chain via dynamic injection locking of laser diode