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Toward large-scale fault-tolerant universal photonic quantum computing
Open accessAbstract
Photonic quantum computing is one of the leading approaches to universal quantum computation. However, large-scale implementation of photonic quantum computing has been hindered by its intrinsic difficulties, such as probabilistic entangling gates for photonic qubits and lack of scalable ways to build photonic circuits. Here, we discuss how to overcome these limitations by taking advantage of two key ideas which have recently emerged. One is a hybrid qubit-continuous variable approach for realizing a deterministic universal gate set for photonic qubits. The other is the time-domain multiplexing technique to perform arbitrarily large-scale quantum computing without changing the configuration of photonic circuits. These ideas together will enable scalable implementation of universal photonic quantum computers in which hardware-efficient error correcting codes can be incorporated. Furthermore, all-optical implementation of such systems can increase the operational bandwidth beyond terahertz in principle, ultimately enabling large-scale fault-tolerant universal quantum computers with ultrahigh operation frequency.
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“In photonics, time-domain multiplexing offers a comparatively hardware-efficient19 path for building fault-tolerant quantum computers, but also near-term subuniversal machines showing quantum computational advantage.”
From Quantum computational advantage with a programmable photonic processor (2022) · cites this paper as [19]
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Metadata
- Authors
- Takeda, S., & Furusawa, A.
- Affiliations
- The University of Tokyo (JP)
- Venue
- APL Photonics
- Publisher
- AIP Publishing
- Published
- 2019-06-01
- Volume
- 4
- Issue
- 6
- ISSN
- 2378-0967 (ISSN-L)
- OpenAlex
- W2950216490
- Cited by
- 234
- References
- 131
- Citations by year
- 2026: 22 · 2025: 39 · 2024: 46 · 2023: 40 · 2022: 32 · 2021: 32 · 2020: 18 · 2019: 5
- FWCI
- 10.04
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- APL Photonics (publishedVersion, cc-by)
- arXiv (Cornell University) (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- arXiv (Cornell University)
- Funders
- Japan Society for the Promotion of Science (18K14143, 18H05207)
- Topics
- Physical Sciences › Computer Science › Artificial Intelligence › Quantum Computing Algorithms and Architecture
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Information and Cryptography
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum optics and atomic interactions
- Keywords
- photonic quantum computing, fault tolerance, universal quantum computation, time-domain multiplexing
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