Rydberg-Mediated Entanglement in a Two-Dimensional Neutral Atom Qubit Array

Graham, Trent; Kwon, Minho; Grinkemeyer, Brandon; Marra, Z.; Xun, Jiang; Lichtman, Martin; Sun, Yuan; Ebert, Matthew; Saffman, M.

doi:10.1103/physrevlett.123.230501

Cited by 297 publications

(317 citation statements)

References 38 publications

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“…To minimize the dephasing, the excitation of an s (d)−orbital Rydberg state is achieved via a twophoton transition with the lower and upper laser fields propagating in opposite directions. However, it still leads to a k of several times 10 6 m −1 if the element used is 87 Rb or 133 Cs, as frequently adopted in experiments [14][15][16][17][18][19][20][21][22]. This leads to a 1/e dephasing time ∝ 1/(kv rms ) [14,[22][23][24] of only several microseconds in typical experimental setups [4,14,15,22,24].…”

Section: Introductionmentioning

confidence: 99%

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Suppressing Motional Dephasing of Ground-Rydberg Transition for High-Fidelity Quantum Control with Neutral Atoms

Shi

2020

Phys. Rev. Applied

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The performance of many control tasks with Rydberg atoms can be improved via suppression of the motion-induced dephasing between ground and Rydberg states of neutral atoms. The dephasing often occurs during the gap time when the atom is shelved in a Rydberg state before its deexcitation. By using laser fields to induce specific extra phase change to the Rydberg state during the gap time, it is possible to faithfully transfer the Rydberg state back to the ground state after the gap. Although the Rydberg state transitions back and forth between different eigenstates during the gap time, it preserves the blockade interaction between the atom of interest and a nearby Rydberg excitation. This simple method of suppressing the motional dephasing of a flying Rydberg atom can be used in a broad range of quantum control over neutral atoms.

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Section: Introductionmentioning

confidence: 99%

“…Although a method is given in Ref. 25 for a Doppler-free three-photon transition between ground and Rydberg states of a rubidium atom, to the best of our knowledge, however, there is no theory for suppressing the dephasing in the usually adopted two-photon transition [14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Suppressing Motional Dephasing of Ground-Rydberg Transition for High-Fidelity Quantum Control with Neutral Atoms

Shi

2020

Phys. Rev. Applied

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“…Cold neutral atoms in optical microtraps are a promising platform for quantum simulation and computing. Recent advances have demonstrated the utility of this platform for simulation of many-body physics [1,2], as well as its promise for realization of high-fidelity gates for universal quantum computation [3,4]. The main advantages of the microtraps platform are scalability [5], long coherence times (up to hundreds of ms) [6], high-fidelity readout with low cross-talk [7] and prospects for achieving high-fidelity logical gates [8].…”

Section: Introductionmentioning

confidence: 99%

Single atom movement with dynamic holographic optical tweezers

et al. 2020

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We report an experimental implementation of dynamical holographic tweezers for single trapped atoms. The tweezers are realized with dynamical phase holograms displayed on the liquid crystal spatial light modulator. We experimentally demonstrate the possibility to trap and move single rubidium atoms with such dynamic potentials, and study its limitations. Our results suggest that high probability transfer of single atoms in the tweezers may be performed in large steps, much larger then the trap waist. We discuss intensity-flicker in holographic traps and techniques for its suppression. Loss and heating rates in dynamic tweezers are measured and no excess loss or heating is observed in comparison with static traps.

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“…Optically trapped neutral single-atoms system, which has the advantages of the long coherence time and good scalability, has been regarded as one of the most promising systems to achieve the quantum computation [2][3][4] . In the very recent time, the demonstration of high fidelity quantum gates via Rydberg interaction accelerated the researches on the neutral atom-based quantum computation 5,6 . The foundation of the natural atom-based quantum computing is the resolvable single atom array [7][8][9][10][11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

High-numerical-aperture and long-working-distance objective for single-atom experiments

et al. 2020

Review of Scientific Instruments

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We present two long-working-distance objective lenses with numerical apertures (NA) of 0.29 and 0.4 for singleatom experiments. The objective lenses are assembled entirely by the commercial on-catalog Φ1" singlets. Both the objectives are capable to correct the spherical aberrations due to the standard flat vacuum glass windows with various thickness. The working distances of NA= 0.29 and NA= 0.4 objectives are 34.6 mm and 18.2 mm, respectively, at the design wavelength of 852 nm with 5-mm thick silica window. In addition, the objectives can also be optimized to work at diffraction limit at single wavelength in the entire visible and near infrared regions by slightly tuning the distance between the first two lenses. The diffraction limited fields of view for NA= 0.29 and NA= 0.4 objectives are 0.62 mm and 0.61 mm, and the spatial resolutions are 1.8 µm and 1.3 µm at the design wavelength. The performances are simulated by the commercial ray-tracing software and confirmed by imaging the resolution chart and a 1.18 µm pinhole. The two objectives can be used for trapping and manipulating single atoms of various species.

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Rydberg-Mediated Entanglement in a Two-Dimensional Neutral Atom Qubit Array

Cited by 297 publications

References 38 publications

Suppressing Motional Dephasing of Ground-Rydberg Transition for High-Fidelity Quantum Control with Neutral Atoms

Suppressing Motional Dephasing of Ground-Rydberg Transition for High-Fidelity Quantum Control with Neutral Atoms

Single atom movement with dynamic holographic optical tweezers

High-numerical-aperture and long-working-distance objective for single-atom experiments

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