Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Fermihedral: On the Optimal Compilation for Fermion-to-Qubit Encoding
Yuhao Liu, Shize Che, Junyu Zhou +2 more·Mar 26, 2024
This paper introduces Fermihedral, a compiler framework focusing on discovering the optimal Fermion-to-qubit encoding for targeted Fermionic Hamiltonians. Fermion-to-qubit encoding is a crucial step in harnessing quantum computing for efficient simul...
Using Quantum Computers In Control: Interval Matrix Properties
Jan Schneider-Barnes, Julian Berberich·Mar 26, 2024
Quantum computing provides a powerful frame-work for tackling computational problems that are classically intractable. The goal of this paper is to explore the use of quantum computers for solving relevant problems in systems and control theory. In t...
A neural network approach for two-body systems with spin and isospin degrees of freedom
Chuanxin Wang, Tomoya Naito, Jian Li +1 more·Mar 25, 2024
We propose an enhanced machine learning method to calculate the ground state of two-body systems. By extending the original method [Naito, Naito, and Hashimoto, Phys. Rev. Research 5, 033189 (2023)], the present method enables consideration of the sp...
Unveiling clean two-dimensional discrete time crystals on a digital quantum computer
Kazuya Shinjo, Kazuhiro Seki, Tomonori Shirakawa +2 more·Mar 25, 2024
In periodically driven (Floquet) systems, evolution typically results in an infinite-temperature thermal state due to continuous energy absorption over time. However, before reaching thermal equilibrium, such systems may transiently pass through a me...
Generation of Genuine Multipartite Entangled States via Indistinguishability of Identical Particles
Kobra Mahdavipour, Farzam Nosrati, S. Sciara +2 more·Mar 25, 2024
Indistinguishability of identical particles is a resource for quantum information processing and has been utilized to generate entanglement from independent particles that spatially overlap only at the detection stage. Here, we introduce a controllab...
Revisiting the Mapping of Quantum Circuits: Entering the Multi-core Era
Pau Escofet, Anabel Ovide, Medina Bandic +6 more·Mar 25, 2024
Quantum computing represents a paradigm shift in computation, offering the potential to solve complex problems intractable for classical computers. Although current quantum processors already consist of a few hundred qubits, their scalability remains...
Computable and non-computable in the quantum domain: statements and conjectures
Aleksey K. Fedorov, E. Kiktenko, N. Kolachevsky·Mar 25, 2024
Significant advances in the development of computing devices based on quantum effects and the demonstration of their use to solve various problems have rekindled interest in the nature of the"quantum computational advantage."Although various attempts...
Quantum state preparation for probability distributions with reflection symmetry using matrix-product states
Yuichi Sano, Ikko Hamamura·Mar 25, 2024
Quantum circuits for loading probability distributions into quantum states are essential subroutines in quantum algorithms used in physics, finance engineering, and machine learning. The ability to implement these with high accuracy in low-depth quan...
Boson sampling enhanced quantum chemistry
Zhong-Xia Shang, Han-Sen Zhong, Yukun Zhang +5 more·Mar 25, 2024
In this work, we give a hybrid quantum-classical algorithm for solving electronic structure problems of molecules using only linear quantum optical systems. The variational ansatz we proposed is a hybrid of non-interacting Boson dynamics and classica...
High-Temperature Gibbs States are Unentangled and Efficiently Preparable
Ainesh Bakshi, Allen Liu, Ankur Moitra +1 more·Mar 25, 2024
We show that thermal states of local Hamiltonians are separable above a constant temperature. Specifically, for a local Hamiltonian <tex>$H$</tex> on a graph with degree <tex>$\mathfrak{g}$</tex>, its Gibbs state at inverse temperature <tex>$\beta$</...
Nonlinear dynamics as a ground-state solution on quantum computers
A. J. Pool, Alejandro D. Somoza, Conor Mc Keever +2 more·Mar 25, 2024
For the solution of time-dependent nonlinear differential equations, we present variational quantum algorithms (VQAs) that encode both space and time in qubit registers. The spacetime encoding enables us to obtain the entire time evolution from a sin...
Probing the limits of variational quantum algorithms for nonlinear ground states on real quantum hardware: The effects of noise
Muhammad Umer, Eleftherios Mastorakis, S. Evangelou +1 more·Mar 25, 2024
A recently proposed variational quantum algorithm has expanded the horizon of variational quantum computing to nonlinear physics and fluid dynamics. In this work, we probe the ability of such approaches to capture the ground state of the nonlinear Sc...
Broadband and fabrication-tolerant 3-dB couplers with topological valley edge modes
Guo-Jing Tang, Xiaodong Chen, Lu Sun +10 more·Mar 25, 2024
3-dB couplers, which are commonly used in photonic integrated circuits for on-chip information processing, precision measurement, and quantum computing, face challenges in achieving robust performance due to their limited 3-dB bandwidths and sensitiv...
Fidelity of wormhole teleportation in finite-qubit systems
Zeyu Liu, Pengfei Zhang·Mar 25, 2024
The rapid development of quantum science and technology is leading us into an era where quantum many-body systems can be comprehended through quantum simulations. Holographic duality, which states gravity and spacetime can emerge from strongly intera...
Holographic Gaussian Boson Sampling with Matrix Product States on 3D cQED Processors.
Ningyi Lyu, Paul Bergold, Micheline B. Soley +2 more·Mar 25, 2024
We introduce quantum circuits for simulations of multimode state vectors on 3D circuit quantum electrodynamics (cQED) processors using matrix product state representations. The circuits are demonstrated as applied to simulations of molecular docking ...
The Road to Near-Capacity CV-QKD Reconciliation: An FEC-Agnostic Design
Xin Liu, Chao Xu, Yasir J. Noori +2 more·Mar 24, 2024
New near-capacity continuous-variable quantum key distribution (CV-QKD) reconciliation schemes are proposed, where both the authenticated classical channel (ClC) and the quantum channel (QuC) for QKD are protected by separate forward error correction...
Coupler-Assisted Leakage Reduction for Scalable Quantum Error Correction with Superconducting Qubits.
Xiaohan Yang, Ji Chu, Zechen Guo +21 more·Mar 24, 2024
Superconducting qubits are a promising platform for building fault-tolerant quantum computers, with recent achievement showing the suppression of logical error with increasing code size. However, leakage into noncomputational states, a common issue i...
Modified Multiple Sequence Alignment Algorithm on Quantum Annealers (MAQ)
Melody Lee·Mar 24, 2024
We propose a modified MSA algorithm on quantum annealers with applications in areas of bioinformatics and genetic sequencing. To understand the human genome, researchers compare extensive sets of these genetic sequences -- or their protein counterpar...
BeSnake: A Routing Algorithm for Scalable Spin-Qubit Architectures
Nikiforos Paraskevopoulos, C. G. Almudéver, Sebastian Feld·Mar 24, 2024
As quantum computing devices increase in size with respect to the number of qubits, two-qubit interactions become more challenging, necessitating innovative and scalable qubit routing solutions. In this work, we introduce beSnake, a novel algorithm s...
Rate-fidelity tradeoff in cavity-based remote entanglement generation
Kazufumi Tanji, Hiroki Takahashi, W. Roga +1 more·Mar 22, 2024
The qubit scalability imposes a paramount challenge in the field of quantum computing. Photonic interconnects between distinct quantum computing modules provide a solution to deal with this issue. The fundamental part of this approach is entanglement...