A chiral one-dimensional atom using a quantum dot in an open microcavity

Antoniadis, Nadia O.; Tomm, Natasha; Jakubczyk, Tomasz; Schott, Rüdiger; Valentin, Sascha R.; Wieck, A. D.; Ludwig, Arne; Warburton, Richard J.; Javadi, Alisa

doi:10.48550/arxiv.2110.02650

Cited by 2 publications

(2 citation statements)

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“…They also exhibit a Lambda level structure which is essential for the implementation of our gate, see figure 1(b). Finally, they have been successfully embedded in microcavities [94][95][96] and nanocavities [97] with cooperativities exceeding 100, which is another crucial factor for the realization of our gate.…”

Section: Introductionmentioning

confidence: 99%

Nonunitary gate operations by dissipation engineering

Zapusek

Javadi

Reiter

2022

Quantum Sci. Technol.

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Irreversible logic is at odds with unitary quantum evolution. Emulating such operations by classical measurements can result in disturbances and high resource demands. To overcome these limitations, we propose protocols that harness dissipation to realize the nonunitary evolution required for irreversible gate operations. Using additional excited states subject to decay, we engineer effective decay processes that perform the desired gate operations on the smallest stable Hilbert space. These operate deterministically and in an autonomous fashion, without the need for measurements. We exemplify our approach considering several classical logic operations, such as the OR, NOR, and XOR gates. Towards experimental realization, we discuss a possible implementation in quantum dots. Our study shows that irreversible logic operations can be efficiently performed on realistic quantum systems and that dissipation engineering is an essential tool for obtaining nonunitary evolutions. The proposed operations expand the quantum engineers' toolbox and have promising applications in NISQ algorithms and quantum machine learning.

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Section: Introductionmentioning

confidence: 99%

Nonunitary gate operations by dissipation engineering

Zapusek

Javadi

Reiter

2022

Quantum Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…1 (b). Finally, they have been successfully embedded in microcavities [87][88][89] and nanocavities [90] with cooperativities exceeding 100 which is another important factor for realization of our gate.…”

Section: Introductionmentioning

confidence: 99%