Measurement and 3D Reconstruction of the Micro-scale Optical Dipole Trap for Single Atom Manipulation

Jian-long, 王建龙 Wang; Gang, 李刚 Li; Ya-li, 田亚莉 Tian; Tiancai, 张天才 Zhang

doi:10.3788/asqo20152101.0074

Cited by 5 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Trapping and manipulating single neutral atoms can be achieved by a microscopic far-offresonance optical dipole trap (FORT) [11]. A conventional method employs high numerical-aperture objectives with spherical or aspherical lenses are used to get micrometer-scale FORTs [12][13][14]. Single atoms trapped in FORTs can be controlled with high accuracy and high numerical-aperture objectives can collect photons from single atoms efficiently.…”

mentioning

confidence: 99%

Subwavelength optical dipole trap for neutral atoms using a microcapillary tube tip

Zhang

2017

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

We propose a scheme for a state-insensitive optical dipole trap for single cesium atoms using a silica microcapillary tube tip. The end of microcapillary tube tip is flat. Simulations show that the trapping light beam output from microcapillary tube tip interferes and can form a subwavelength-trap with a full width at half-maximum of 0.67 μm. The trap is small enough to trap single atoms. The trap depth is more than 1 mK when the optical power of the trapping light guided by the microcapillary tube tip is only a few milliwatts. The effects of two imperfections, roughness of end surface and cutting angle, are estimated. The trapping depth for single atom trapping can be more than 1 mK when the average rms amplitude and average correlation length of tip surface roughness is smaller than 0.15 μm and the cutting angle is smaller than 16 degrees. Tip sizes on the order of microns are small enough to be combined within micro/nano structures for hybrid systems.

show abstract

mentioning

confidence: 99%

Subwavelength optical dipole trap for neutral atoms using a microcapillary tube tip

Zhang

2017

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

show abstract

“…The second-order correlation function of a multimode thermal optical beam was used to fit the experiment data for the atom beams. As with chaotic thermal light, we found that the atom correlation time was dependent on the atom mode number, controlled by the initial temperature in the MOT [17]. The relevant parameter values were obtained by the theoretical fitting of the experimentally measured curves.…”

Section: Discussionmentioning

confidence: 94%

Experimental investigation of the statistical distribution of single atoms in cavity quantum electrodynamics

Wen

et al. 2015

Laser Phys. Lett.

View full text Add to dashboard Cite

The Hanbury Brown-Twiss experiment for a beam of photons or atoms can be performed using counting experiments. We present the statistical distribution of single 133 Cs atoms detected by a high finesse microcavity, which acts as a point-like single-atom counter. The distribution of the arrival times of the atoms and the correlation between the atoms was obtained based on the full counting statistics of the beam emitted from the cavity. The bunching behavior of the thermal atomic beams is clearly observable using this type of atom-cavity system. The correlation between the cesium atoms depends on the temperature of the atom cloud, and the corresponding parameters may be found by fitting an experimentally measured curve using the theory of multimode thermal light.

show abstract

Comparison of single-neutral-atom qubit between in bright trap and in dark trap

Tian¹,

Wang²,

Yang³

et al. 2019

Chinese Phys. B

View full text Add to dashboard Cite

A single neutral atom is one of the most promising candidates to encode a quantum bit (qubit). In a real experiment, a single neutral atom is always confined in a micro-sized far off-resonant optical trap (FORT). There are generally two types of traps: red-detuned trap and blue-detuned trap. We experimentally compare the qubits encoded in "clock states" of single cesium atoms confined separately in either 1064-nm red-detuned (bright) trap or 780-nm blue-detuned (dark) trap: both traps have almost the same trap depth. A longer lifetime of 117 s and a longer coherence time of about 10 ms are achieved in the dark trap. This provides a direct proof of the superiority of the dark trap over the bright trap. The measures to further improve the coherence are discussed.

show abstract

Measurement and 3D Reconstruction of the Micro-scale Optical Dipole Trap for Single Atom Manipulation

Cited by 5 publications

References 0 publications

Subwavelength optical dipole trap for neutral atoms using a microcapillary tube tip

Subwavelength optical dipole trap for neutral atoms using a microcapillary tube tip

Experimental investigation of the statistical distribution of single atoms in cavity quantum electrodynamics

Comparison of single-neutral-atom qubit between in bright trap and in dark trap

Contact Info

Product

Resources

About