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10 papers · 2 filters
Fidelity-dissipation relations in quantum gates
Tan Van Vu, Tomotaka Kuwahara, Keiji Saito
Accurate quantum computing relies on the precision of quantum gates. However, quantum gates in practice are generally affected by dissipative environments, which can significantly…
Handbook for Quantifying Robustness of Magic
Hiroki Hamaguchi, Kou Hamada, Nobuyuki Yoshioka
The nonstabilizerness, or magic, is an essential quantum resource to perform universal quantum computation. Robustness of magic (RoM) in particular characterizes the degree of usef…
Density matrix representation of hybrid tensor networks for noisy quantum devices
Hiroyuki Harada, Yasunari Suzuki, Bo Yang +2
The hybrid tensor network (HTN) method is a general framework allowing for the construction of an effective wavefunction with the combination of classical tensors and quantum tenso…
Localized Virtual Purification
Hideaki Hakoshima, Suguru Endo, Kaoru Yamamoto +2
Analog and digital quantum simulators can efficiently simulate quantum many-body systems that appear in natural phenomena. However, experimental limitations of near-term devices st…
Optimal light cone for macroscopic particle transport in long-range systems: A quantum speed limit approach
Tan Van Vu, Tomotaka Kuwahara, Keiji Saito
Understanding the ultimate rate at which information propagates is a pivotal issue in nonequilibrium physics. Nevertheless, the task of elucidating the propagation speed inherent i…
Clifford Group and Unitary Designs under Symmetry
Yosuke Mitsuhashi, Nobuyuki Yoshioka
We have generalized the well-known statement that the Clifford group is a unitary 3-design into symmetric cases by extending the notion of unitary design. Concretely, we have prove…