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QUANTUM COMPUTATION

Noise phased out

Nature Physics volume 18, pages 240–241 (2022)Cite this article

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Environmental noise can severely hinder the storage and transmission of quantum information. Experiments now reveal that trapped ions are promising candidates for reliable quantum memories.

Quantum-error-correction protocols enable reliable computation even in the presence of unwanted noise in the underlying quantum hardware. One challenge in the path towards scalable quantum computing is the realization of a fault-tolerant quantum memory — a device that can store a unit of quantum information longer than any of its components. A promising resource-efficient proposal for achieving this is based on encoding quantum information in non-classical states of a harmonic oscillator. Now, as they describe in Nature Physics, Brennan de Neeve and collaborators1 have demonstrated stabilization of an error-corrected state in the harmonic oscillator mode defined by the motional degree of freedom of a single trapped ion.

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Fig. 1: Error correction of the GKP code.

References

  1. de Neeve, B., Nguyen, T.-L., Behrle, T. & Home, J. P. Nat. Phys. https://doi.org/10.1038/s41567-021-01487-7 (2022).

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  1. Department of Applied Physics, Yale University, New Haven, CT, USA

    Shruti Puri

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  1. Shruti Puri
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Correspondence to Shruti Puri.

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Puri, S. Noise phased out. Nat. Phys. 18, 240–241 (2022). https://doi.org/10.1038/s41567-021-01486-8

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  • DOI: https://doi.org/10.1038/s41567-021-01486-8

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