Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Tokunaga, Yuuki"'
The design of translation symmetric bosonic codes, e.g., Gottesmann-Kitaev-Preskill and squeezed cat codes, is robust against photon loss, but the computation accuracy is limited by the available squeezing level. Here, we introduce the \textit{projec
Externí odkaz:
http://arxiv.org/abs/2403.14218
We propose a scheme for generating a high-purity single photon on the basis of cavity quantum electrodynamics (QED). This scheme employs a four-level system including two excited states, two ground states, and two driving lasers; this structure allow
Externí odkaz:
http://arxiv.org/abs/2403.00072
Encoding logical qubits with surface codes and performing multi-qubit logical operations with lattice surgery is one of the most promising approaches to demonstrate fault-tolerant quantum computing. Thus, a method to efficiently schedule a sequence o
Externí odkaz:
http://arxiv.org/abs/2401.15829
Cavity-mediated adiabatic transfer (CMAT) is a robust way to perform a two-qubit gate between trapped atoms inside an optical cavity. In the previous study by Goto and Ichimura [H. Goto and K. Ichimura, Phys. Rev. A 77, 013816 (2008).], the upper bou
Externí odkaz:
http://arxiv.org/abs/2401.00384
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 tensors, i.e., amplitudes of quantum states. In particular, hybrid tree ten
Externí odkaz:
http://arxiv.org/abs/2309.15761
Autor:
Yang, Bo, Yoshioka, Nobuyuki, Harada, Hiroyuki, Hakkaku, Shigeo, Tokunaga, Yuuki, Hakoshima, Hideaki, Yamamoto, Kaoru, Endo, Suguru
There are considerable obstacles against realizing practical quantum computing: a significant amount of computation errors and the restricted qubit count. As a unified method of noise-agnostic quantum error mitigation (QEM) methods, i.e., the quantum
Externí odkaz:
http://arxiv.org/abs/2309.14171
Publikováno v:
Phys. Rev. A 108, 042426 (2023)
Quantum error correction and quantum error detection necessitate syndrome measurements to detect errors. Performing syndrome measurements for each stabilizer generator can be a significant overhead, considering the fact that the readout fidelity in t
Externí odkaz:
http://arxiv.org/abs/2302.02626
Autor:
Endo, Suguru, Suzuki, Yasunari, Tsubouchi, Kento, Asaoka, Rui, Yamamoto, Kaoru, Matsuzaki, Yuichiro, Tokunaga, Yuuki
The rotation symmetric bosonic code (RSBC) is a unified framework of practical bosonic codes that have rotation symmetries, such as cat codes and binomial codes. While cat codes achieve the break-even point in which the coherence time of the encoded
Externí odkaz:
http://arxiv.org/abs/2211.06164
We investigate atom-photon entangling gates based on cavity quantum electrodynamics (QED) for a finite photon-pulse duration, where not only the photon loss but also the temporal mode-mismatch of the photon pulse becomes a severe source of error. We
Externí odkaz:
http://arxiv.org/abs/2211.04151
We investigate the stimulated emission of superradiant atoms coupled to a waveguide induced by a coherent-state photon pulse. We provide an analytical result when a short $\pi$ pulse is incident, which shows that the atoms emit photons coherently int
Externí odkaz:
http://arxiv.org/abs/2203.06943