Trapped Ion Quantum Computing Using Optical Tweezers and Electric Fields

Mazzanti, Matteo; Schüssler, R. X.; Espinoza, Juan Diego Arias; Wu, Z.; Gerritsma, R.; Safavi-Naini, Arghavan

doi:10.1103/physrevlett.127.260502

Cited by 13 publications

(11 citation statements)

References 24 publications

(30 reference statements)

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“…Our results present a distinctive control over the motional ground states with tunable chiral couplings and provide new insights in getting around the cooling barrier in trapped-ion-based applications of quantum computer and simulator. Last but no least, the scheme we consider here can also be implemented with optical tweezers in a scalable ion crystal for high-performance gate operations [58,59].…”

mentioning

confidence: 99%

Chiral-coupling-assisted Refrigeration in Trapped Ions

Chen¹,

Wang²,

Wang³

et al. 2022

Preprint

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The tapped ions can be cooled close to their motional ground state, which is imperative in implementing quantum computation and quantum simulation. Here we demonstrate the capability of light-mediated chiral couplings between ions, which enables a superior cooling scheme exceeding the single-ion limit of sideband cooling. We present the chiral-coupling-assisted refrigeration in the target ion at the price of heating the others under asymmetric drivings, where its steady-state phonon occupation outperforms the lower bound set by a single ion. We further locate the optimal operation condition of the refrigeration and identify the parameter region where a faster rate of cooling emerges. Under an additional nonguided decay channel, the heating effect in the reciprocal coupling regime becomes suppressed and turns into cooling instead. Our results present a resource of collective chiral couplings which help surpass the bottleneck of cooling procedure in applications of trapped-ion-based quantum computer and simulator.

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mentioning

confidence: 99%

Chiral-coupling-assisted Refrigeration in Trapped Ions

Chen¹,

Wang²,

Wang³

et al. 2022

Preprint

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show abstract

“…In conclusion, our results present a distinctive control over the motional ground states with tunable chiral couplings and provide new insights in getting around the cooling barrier in trapped-ion-based applications of quantum computation and simulation. Last but not least, the scheme we consider here can also be implemented with optical tweezers in a scalable ion crystal for high-performance gate operations [65,66]. We note that an anomalous heating is unavoidable in ion traps owing to the electric field noise from the electrode surfaces.…”

Section: Discussionmentioning

confidence: 97%

Chiral-coupling-assisted refrigeration in trapped ions

Chen

Wang

et al. 2023

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

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Trapped ions can be cooled close to their motional ground state, which is imperative in implementing quantum computation and quantum simulation. Here we theoretically investigate the capability of light-mediated chiral couplings between ions, which enables a superior cooling scheme exceeding the single-ion limit of sideband cooling. Under asymmetric drivings, the target ion manifests the chiral-coupling-assisted refrigeration at the price of heating the others, where its steady-state phonon occupation outperforms the lower bound set by a single ion. We further explore the optimal operation conditions of the refrigeration, where a faster rate of cooling can still be sustained. Under an additional nonguided decay channel, a broader parameter regime emerges to support the superior cooling and carries over into the reciprocal coupling, suppressing the heating effect instead. Our results present a tunable resource of collective chiral couplings which can help surpass the bottleneck of cooling procedure and open up new possibilities in applications of trapped-ion-based quantum computer and simulator.

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“…This outperformed cooling behavior results from long-range spin-exchange couplings which enable an enhanced cooling by removing extra heat under an asymmetric driving condition. Precise placements of atoms can be realized in versatile and reconfigurable optical tweezer arrays which have been applied in neutral atoms [56,57], molecules [58,59], and ions [60][61][62]. With an exquisite control of atom arrays, the laser-cooling technique presented here is particularly useful and faster in preparing the motional ground state of atoms [18,63,64] without requiring atom-atom collisions in evaporative cooling.…”

Section: Discussionmentioning

confidence: 99%

Enhanced dark-state sideband cooling in trapped atoms via photon-mediated dipole-dipole interactions

Wang¹,

Wang²,

Chen³

et al. 2022

Preprint

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Resolved sideband cooling provides a crucial step in subrecoil cooling the trapped atoms toward their motional ground state, which is essential in atom-based quantum technologies. Here we present an enhanced dark-state sideband cooling in trapped atoms utilizing photon-mediated dipole-dipole interactions among them. By placing the atoms at the magic interparticle distances, we manifest an outperformed cooling behavior in the target atom, which surpasses the limit that a single atom permits. We further investigate various atomic configurations in a multiatom setup with a laser detuning and different light polarization angles, where multiple magic spacings can be identified and a moderate improvement in cooling performance is predicted as the number of atoms increases. Our results provide insights to subrecoil cooling of atoms with collective and light-induced long-range dipole-dipole interactions, and pave the way toward implementing genuine quantum operations in multiple quantum registers.

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Trapped Ion Quantum Computing Using Optical Tweezers and Electric Fields

Cited by 13 publications

References 24 publications

Chiral-coupling-assisted Refrigeration in Trapped Ions

Chiral-coupling-assisted Refrigeration in Trapped Ions

Chiral-coupling-assisted refrigeration in trapped ions

Enhanced dark-state sideband cooling in trapped atoms via photon-mediated dipole-dipole interactions

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