Atom microtraps based on near-field Fresnel diffraction

Bandi, Thejesh; Minogin, V. G.; Chormaic, Síle Nic

doi:10.1103/physreva.78.013410

Cited by 18 publications

(17 citation statements)

References 21 publications

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“…If we concentrate only on the compatibility check of an NFFD trap [21] and a two-qubit operation [18,19], it is possible to simplify the design further in order to circumvent difficulties (i) and (ii), as shown in Fig. 7.…”

Section: Summary and Discussionmentioning

confidence: 99%

“…Parameters are given in Table I. A red-detuned laser beam passing through an aperture with a radius on the order of the laser wavelength forms an attractive potential which is given by [21] …”

Section: Numerical Calculationmentioning

confidence: 99%

“…Figure 1 shows the scheme of our recent proposal [20]. Neutral atoms with two hyperfine states, |0 and |1 , are trapped in an array of optical potentials generated by NFFD of light at thin apertures, each with a radius comparable to the wavelength of the light [21]. The apertures are made using microfabrication techniques on a silicon substrate.…”

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confidence: 99%

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Two-Qubit Gate Operation on Selected Nearest-Neighbor Neutral Atom Qubits

Lapasar

Kasamatsu

Chormaic³

et al. 2014

J. Phys. Soc. Jpn.

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We have previously discussed the design of a neutral atom quantum computer with an on-demand interaction [E. Hosseini Lapasar, et al., J. Phys. Soc. Jpn. 80, 114003 (2011)]. In this contribution, we propose an experimental method to demonstrate a selective two-qubit gate operation that is less demanding than our original proposal, although the gate operation is limited to act between two neighboring atoms. We evaluate numerically the process of a two-qubit gate operation that is applied to a selected pair of nearest-neighbor, trapped atoms and we estimate the upper bound of the gate operation time and corresponding gate fidelity. The proposed scheme is scalable and, though challenging, is feasible with current experimental capabilities.

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Section: Summary and Discussionmentioning

confidence: 99%

Section: Numerical Calculationmentioning

confidence: 99%

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Two-Qubit Gate Operation on Selected Nearest-Neighbor Neutral Atom Qubits

Lapasar

Kasamatsu

Chormaic³

et al. 2014

J. Phys. Soc. Jpn.

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“…Another method of recent interest for creating light fields with localized maxima and minima for trapping atoms is to use the diffracted light in and around spatially limiting apertures [12][13][14][15]. Klimov and Letokhov first theoretically investigated trapping atoms in light distributions, formed by interference of incident and scattered light, located before and within diffracting apertures with dimensions smaller than the wavelength of light [12].…”

Section: Introductionmentioning

confidence: 99%

“…Klimov and Letokhov first theoretically investigated trapping atoms in light distributions, formed by interference of incident and scattered light, located before and within diffracting apertures with dimensions smaller than the wavelength of light [12]. In our earlier work, we investigated * kgillen@calpoly.edu 1050-2947/2010/82(6)/063420 (7) 063420 [14]. Chen and Yin further theoretically improved the properties of trap sites created by diffracted laser light by use of a binary phase plate in addition to the diffracting aperture [15].…”

Section: Introductionmentioning

confidence: 99%

Projection of diffraction patterns for use in cold-neutral-atom trapping

Gillen

2010

Phys. Rev. A

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Scalar diffraction theory is combined with beam-propagation techniques to investigate the projection of near-field diffraction patterns to spatial locations away from the aperture for use in optically trapping cold neutral alkali-metal atoms. Calculations show that intensity distributions with localized bright and dark spots usually found within a millimeter of the diffracting aperture can be projected to a region free from optical components such as a cloud of cold atoms within a vacuum chamber. Calculations also predict that the critical properties of the optical dipole atom traps are not only maintained for the projected intensity patterns but also can be manipulated and improved by adjustment of the optical components outside the vacuum chamber.

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