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Enhanced quantum information processing targeting the near term
Progress in the fabrication, control and readout of systems consisting of a small number of qubits has catapulted quantum computation from a primarily theoretical pursuit into the lab. With the growing availability of small and relatively noise-free devices and the imminent arrival of larger next-generation equipment, new theoretical questions are being asked about the potential of quantum computation. In particular, one may ask if quantum computing devices may yield computational benefits even in the presence of noise or constraints on their size or geometrical layout of qubits.
The project EQUIPTNT will characterize the computational capabilities of near-term quantum devices by studying their potential to yield disruptive boosts in information-processing power. It will investigate and design new quantum algorithms adapted to limited hardware: the aim here is to provide computational advances while maximizing noise-tolerance without placing excessive demands on experimental capabilities. It will establish trade-off relations between noise levels, computational power, and the amount and nature of available computational resources. EQUIPTNT will also develop tools for simulating the quantum many-body dynamics of information-processing setups by classical algorithms, in order to pinpoint the origin of quantum advantage, and provide means for certifying the functionality of quantum hardware.
EQUIPTNT will establish new theoretical and algorithmic methods to address the question of ''best use'' for a given finite set of resources. Its interdisciplinary approach will yield novel principles for the design, simulation and validation quantum information processing protocols. Corresponding results will have direct application to near-term quantum devices, providing insights into the architecture and use of schemes tailored towards specific experimental platforms.
Project-related publications of EQUIPTNT are:
- Beatriz Dias, Domagoj Perkovi´c, Masudul Haque, Pedro Ribeiro, and Paul A. McClarty. Quantum noise as a symmetry-breaking field. Phys. Rev. B, 108:L060302, 2023. doi:10.1103/PhysRevB.108.L060302.
- Beatriz Dias and Robert Koenig. Classical simulation of non-Gaussian fermionic circuits, 2023. arXiv:2307.12912.
- Shouzhen Gu, Eugene Tang, Libor Caha, Shin Ho Choe, Zhiyang He, and Aleksander Kubica. Single-shot decoding of good quantum LDPC codes, 2023. arXiv:2306.12470.
- Libor Caha, Xavier Coiteux-Roy, and Robert Koenig. Single-qubit gate teleportation provides a quantum advantage, 2023. arXiv:2209.14158.
- Shin Ho Choe and Robert Koenig. Long-range data transmission in a fault-tolerant quantum bus architecture, 2022. arXiv:2209.09774.
- Libor Caha, Alexander Kliesch, and Robert Koenig. Twisted hybrid algorithms for combinatorial optimization. Quantum Science and Technology, 7(4):045013, 2022. doi:10.1088/2058-9565/ac7f4f.
- Sergey Bravyi, Isaac Kim, Alexander Kliesch, and Robert Koenig. Adaptive constant-depth circuits for manipulating non-abelian anyons, 2022. arXiv:2205.01933.
Last updated on September 26, 2023.