Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Co-Designed Superconducting Architecture for Lattice Surgery of Surface Codes with Quantum Interface Routing Card
Charles Guinn, S. Stein, Esin Tureci +5 more·Dec 2, 2023
Facilitating the ability to achieve logical qubit error rates below physical qubit error rates, error correction is anticipated to play an important role in scaling quantum computers. While many algorithms require millions of physical qubits to be ex...
Optimized topological quantum compilation of three-qubit controlled gates in the Fibonacci anyon model: A controlled-injection approach
Abdellah Tounsi, N. Belaloui, Mohamed Messaoud Louamri +2 more·Nov 29, 2023
A method, termed controlled injection, is proposed for compiling three-qubit controlled gates within the non-Abelian Fibonacci anyon model. Building on single-qubit compilation techniques with three Fibonacci anyons, the approach showcases enhanced a...
Exotic symmetry breaking properties of self-dual fracton spin models
Giovanni Canossa, L. Pollet, M. Martin-Delgado +2 more·Nov 18, 2023
Fracton codes host unconventional topological states of matter and are promising for fault-tolerant quantum computation due to their large coding space and strong resilience against decoherence and noise. In this work, we investigate the ground-state...
Charge qubits based on ultra-thin topological insulator films
Kexin Zhang, H. Lepage, Ying Dong +1 more·Nov 9, 2023
We study how to use the surface states in a Bi2Se3 topological insulator ultra-thin film that are affected by finite size effects for the purpose of quantum computing. We demonstrate that: (i) surface states under the finite size effect can effective...
Majorana qubit codes that also correct odd-weight errors
Sourav Kundu, Ben W. Reichardt·Nov 3, 2023
The tetron architecture is a promising candidate for topological quantum computation. Each tetron Majorana island has four Majorana zero modes, and possible measurements are constrained to span zero or two Majoranas per tetron. Such measurements are ...
Symmetry-Based Quantum Circuit Mapping
Di Yu, Kun Fang·Oct 27, 2023
Quantum circuit mapping is a crucial process in the quantum circuit compilation pipeline, facilitating the transformation of a logical quantum circuit into a list of instructions directly executable on a target quantum system. Recent research has int...
Topological phase transition in a narrow bandgap semiconductor nanolayer
Zhi-Hai Liu, W. Lou, Kai Chang +1 more·Oct 26, 2023
Narrow bandgap semiconductor nanostructures have been explored for realization of topological superconducting quantum devices in which Majorana states can be created and employed for constructing topological qubits. However, a prerequisite to achieve...
Non-Clifford and parallelizable fault-tolerant logical gates on constant and almost-constant rate homological quantum LDPC codes via higher symmetries
Guanyu Zhu, Shehryar Sikander, Elia Portnoy +2 more·Oct 25, 2023
We study parallel fault-tolerant quantum computing for families of homological quantum low-density parity-check (LDPC) codes defined on 3-manifolds with constant or almost-constant encoding rate. We derive generic formula for a transversal $T$ gate o...
Redundant string symmetry-based error correction: Demonstrations on quantum devices
Zhangjie Qin, Daniel Azses, E. Sela +2 more·Oct 19, 2023
Computational power in measurement-based quantum computing stems from the symmetry-protected topological (SPT) order of entangled resource states. However, resource states are prone to preparation errors. We introduce a quantum error correction appro...
Optimizing edge-state transfer in a Su-Schrieffer-Heeger chain via hybrid analog-digital strategies
Sebastián V. Romero, Xi Chen, G. Platero +1 more·Oct 17, 2023
The Su-Schrieffer-Heeger (SSH) chain, which serves as a paradigmatic model for comprehending topological phases and their associated edge states, plays an essential role in advancing our understanding of quantum materials and quantum information proc...
Topological terms with qubit regularization and relativistic quantum circuits
Tanmoy Bhattacharya, S. Chandrasekharan, Rajan Gupta +2 more·Oct 10, 2023
Qubit regularization provides a rich framework to explore quantum field theories. The freedom to choose how the important symmetries of the theory are embedded in the qubit regularization scheme allows us to construct new lattice models with rich pha...
Generative quantum machine learning via denoising diffusion probabilistic models
Bingzhi Zhang, Peng Xu, Xiaohui Chen +1 more·Oct 9, 2023
Deep generative models are key-enabling technology to computer vision, text generation, and large language models. Denoising diffusion probabilistic models (DDPMs) have recently gained much attention due to their ability to generate diverse and high-...
Complexity and order in approximate quantum error-correcting codes
Jinmin Yi, Weicheng Ye, Daniel Gottesman +1 more·Oct 7, 2023
Some form of quantum error correction is necessary to produce large-scale fault-tolerant quantum computers and finds broad relevance in physics. Most studies customarily assume exact correction. However, codes that may only enable approximate quantum...
Valley Pseudospin Polarized Evanescent Coupling between Microwave Ring Resonator and Waveguide in Phononic Topological Insulators.
D. Hatanaka, Hiroaki Takeshita, Motoki Kataoka +3 more·Oct 6, 2023
A coupled ring-waveguide structure is at the core of bosonic wave-based information processing systems, enabling advanced wave manipulations such as filtering, routing, and multiplexing. However, its miniaturization is challenging due to momentum con...
Tunneling of fluxons via a Josephson resonant level
T. Vakhtel, P. Kurilovich, M. Pita-Vidal +3 more·Oct 4, 2023
Fluxons in a superconducting loop can be coherently coupled by quantum phase slips occurring at a weak link such as a Josephson junction. If Cooper pair tunneling at the junction occurs through a resonant level, $2\pi$ quantum phase slips are suppres...
Holographic entropy inequalities and the topology of entanglement wedge nesting
Bartłomiej Czech, S. Shuai, Yixu Wang +1 more·Sep 26, 2023
We prove two new infinite families of holographic entropy inequalities. A key tool is a graphical arrangement of terms of inequalities that is based on entanglement wedge nesting. It associates the inequalities with tessellations of the torus and the...
Quantum Algorithm for Estimating Betti Numbers Using Cohomology Approach
Nhat A. Nghiem, Xianfeng David Gu, Tzu-Chieh Wei·Sep 19, 2023
Topological data analysis has emerged as a powerful tool for analyzing large-scale data. An abstract simplicial complex, in principle, can be built from data points, and by using tools from homology, topological features could be identified. Given a ...
Fault-tolerant hyperbolic Floquet quantum error correcting codes
Ali Fahimniya, Hossein Dehghani, Kishor Bharti +4 more·Sep 18, 2023
A central goal in quantum error correction is to reduce the overhead of fault-tolerant quantum computing by increasing noise thresholds and reducing the number of physical qubits required to sustain a logical qubit. We introduce a potential path towa...
"Smoking gun"signatures of topological milestones in trivial materials by measurement fine-tuning and data postselection
S. M. Frolov, P. Zhang, B. Zhang +9 more·Sep 17, 2023
Exploring the topology of electronic bands is a way to realize new states of matter with possible implications for information technology. Because bands cannot always be observed directly, a central question is how to tell that a topological regime h...
Physics of the Majorana superconducting qubit hybrids
D. Karki, K. A. Matveev, Ivar Martin·Sep 15, 2023
Manipulation of decoupled Majorana zero modes (MZMs) could enable topologically-protected quantum computing. However, the practical realization of a large number of perfectly decoupled MZMs needed to perform nontrivial quantum computation has proven ...