Energy-efficient quantum computing
Ikonen, J., Salmilehto, J., & Möttönen, M. (2017). Energy-efficient quantum computing. npj Quantum Information, 3, Article 17. https://doi.org/10.1038/s41534-017-0015-5
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npj Quantum InformationPäivämäärä
2017Tekijänoikeudet
© The Authors 2017. This article is licensed under a Creative Commons
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In the near future, one of the major challenges in the realization of large-scale quantum computers operating at low temperatures is the management of harmful heat loads owing to thermal conduction of cabling and dissipation at cryogenic components. This naturally raises the question that what are the fundamental limitations of energy consumption in scalable quantum computing. In this work, we derive the greatest lower bound for the gate error induced by a single application of a bosonic drive mode of given energy. Previously, such an error type has been considered to be inversely proportional to the total driving power, but we show that this limitation can be circumvented by introducing a qubit driving scheme which reuses and corrects drive pulses. Specifically, our method serves to reduce the average energy consumption per gate operation without increasing the average gate error. Thus our work shows that precise, scalable control of quantum systems can, in principle, be implemented without the introduction of excessive heat or decoherence.
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Nature Partner JournalsISSN Hae Julkaisufoorumista
2056-6387Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/27006175
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