Zobrazeno 1 - 10
of 1 514
pro vyhledávání: '"White, A. A. L."'
Randomised measurements can efficiently characterise many-body quantum states by learning the expectation values of observables with low Pauli weights. In this paper, we generalise the theoretical tools of classical shadow tomography to the temporal
Externí odkaz:
http://arxiv.org/abs/2412.17862
Autor:
Kobayashi, Fumiyoshi, Manabe, Hidetaka, White, Gregory A. L., Farrelly, Terry, Modi, Kavan, Stace, Thomas M.
Quantum error correction (QEC) is essential for fault-tolerant quantum computation. Often in QEC errors are assumed to be independent and identically distributed and can be discretised to a random Pauli error during the execution of a quantum circuit
Externí odkaz:
http://arxiv.org/abs/2412.13739
Autor:
Miller, Daniel, Levi, Kyano, Postler, Lukas, Steiner, Alex, Bittel, Lennart, White, Gregory A. L., Tang, Yifan, Kuehnke, Eric J., Mele, Antonio A., Khatri, Sumeet, Leone, Lorenzo, Carrasco, Jose, Marciniak, Christian D., Pogorelov, Ivan, Guevara-Bertsch, Milena, Freund, Robert, Blatt, Rainer, Schindler, Philipp, Monz, Thomas, Ringbauer, Martin, Eisert, Jens
Throughout its history, the theory of quantum error correction has heavily benefited from translating classical concepts into the quantum setting. In particular, classical notions of weight enumerators, which relate to the performance of an error-cor
Externí odkaz:
http://arxiv.org/abs/2408.16914
Autor:
White, Gregory A. L.
Every year, substantial theoretical and experimental progress is made towards the realisation of a genuinely new computational paradigm in the construction of a quantum computer. But progress is fractal; to make headway is to unearth the next set of
Externí odkaz:
http://arxiv.org/abs/2405.05416
Noise on quantum devices is much more complex than it is commonly given credit. Far from usual models of decoherence, nearly all quantum devices are plagued both by a continuum of environments and temporal instabilities. These induce noisy quantum an
Externí odkaz:
http://arxiv.org/abs/2312.08454
Autor:
Leditto, Caesnan M. G., Southwell, Angus, Tonekaboni, Behnam, White, Gregory A. L., Usman, Muhammad, Modi, Kavan
Predicting and analyzing global behaviour of complex systems is challenging due to the intricate nature of their component interactions. Recent work has started modelling complex systems using networks endowed with multiway interactions among nodes,
Externí odkaz:
http://arxiv.org/abs/2312.07672
Autor:
Zhang, Xinfang, Wu, Zhihao, White, Gregory A. L., Xiang, Zhongcheng, Hu, Shun, Peng, Zhihui, Liu, Yong, Zheng, Dongning, Fu, Xiang, Huang, Anqi, Poletti, Dario, Modi, Kavan, Wu, Junjie, Deng, Mingtang, Guo, Chu
The development of fault-tolerant quantum processors relies on the ability to control noise. A particularly insidious form of noise is temporally correlated or non-Markovian noise. By combining randomized benchmarking with supervised machine learning
Externí odkaz:
http://arxiv.org/abs/2312.06062
Publikováno v:
Phys. Rev. X 14, 041018 (2024)
We introduce a class of quantum non-Markovian processes -- dubbed process trees -- that exhibit polynomially decaying temporal correlations and memory distributed across time scales. This class of processes is described by a tensor network with tree-
Externí odkaz:
http://arxiv.org/abs/2312.04624
Autor:
Vallury, Harish J., Jones, Michael A., White, Gregory A. L., Creevey, Floyd M., Hill, Charles D., Hollenberg, Lloyd C. L.
Publikováno v:
Quantum 7, 1109 (2023)
In the lead up to fault tolerance, the utility of quantum computing will be determined by how adequately the effects of noise can be circumvented in quantum algorithms. Hybrid quantum-classical algorithms such as the variational quantum eigensolver (
Externí odkaz:
http://arxiv.org/abs/2211.08780
Publikováno v:
Phys. Rev. Lett. 130, 160401 (2023)
From an open system perspective non-Markovian effects due to a nearby bath or neighbouring qubits are dynamically equivalent. However, there is a conceptual distinction to account for: neighbouring qubits may be controlled. We combine recent advances
Externí odkaz:
http://arxiv.org/abs/2210.15333