Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Single-shot and measurement-based quantum error correction via fault complexes
Timo Hillmann, G. Dauphinais, I. Tzitrin +1 more·Oct 16, 2024
Photonics provides a viable path to a scalable fault-tolerant quantum computer. The natural framework for this platform is measurement-based quantum computation, where fault-tolerant graph states supersede traditional quantum error-correcting codes. ...
Composable free-space continuous-variable quantum key distribution using discrete modulation
Kevin Jaksch, Thomas Dirmeier, Y. Weiser +16 more·Oct 16, 2024
Continuous-variable (CV) quantum key distribution (QKD) allows for quantum secure communication with the benefit of being close to existing classical coherent communication. In recent years, CV QKD protocols using a discrete number of displaced coher...
Simulation of Quantum Computers: Review and Acceleration Opportunities
Alessio Cicero, Mohammad Ali Maleki, M. Azhar +2 more·Oct 16, 2024
Quantum computing has the potential to revolutionise multiple fields by solving complex problems that cannot be solved in reasonable time with current classical computers. Nevertheless, the development of quantum computers is still in its early stage...
Transient concurrence for copropagating entangled bosons and fermions
M. Á. Terán, Roberto Romo, Gastón García-Calderón·Oct 15, 2024
The transient dynamics of copropagating entangled bosons and fermions remain an unexplored aspect of quantum mechanics. We investigate how entanglement manifests itself in the spatiotemporal evolution of the particles using a modified version of the ...
Agnostic Process Tomography
Chirag Wadhwa, Laura Lewis, Elham Kashefi +1 more·Oct 15, 2024
Characterizing a quantum system by learning its state or evolution is a fundamental problem in quantum physics and learning theory with a myriad of applications. Recently, as a new approach to this problem, the task of agnostic state tomography was d...
Molecular Quantum Control Algorithm Design by Reinforcement Learning
Anastasia Pipi, Xuecheng Tao, Arianna Wu +2 more·Oct 15, 2024
Precision measurements of molecules offer an unparalleled paradigm to probe physics beyond the Standard Model. The rich internal structure within these molecules makes them exquisite sensors for detecting fundamental symmetry violations, local positi...
Stochastic resetting in discrete-time quantum dynamics: steady states and correlations in few-qubit systems
Sascha Wald, Louie Hong Yao, Thierry Platini +2 more·Oct 15, 2024
Time evolution in several classes of quantum devices is generated through the application of quantum gates. Resetting is a critical technological feature in these systems allowing for mid-circuit measurement and complete or partial qubit reset. The p...
An Efficient Error Estimation Method in Quantum Key Distribution
Yingjian Wang, Yilun Hai, Buniechukwu Njoku +3 more·Oct 15, 2024
Error estimation is an important step for error correction in quantum key distribution. Traditional error estimation methods require sacrificing a part of the sifted key, forcing a trade-off between the accuracy of error estimation and the size of th...
The Quasi-probability Method and Applications for Trace Reconstruction
Ittai Rubinstein·Oct 15, 2024
In the trace reconstruction problem, one attempts to reconstruct a fixed but unknown string $x$ of length $n$ from a given number of traces $\tilde{x}$ drawn iid from the application of a noisy process (such as the deletion channel) to $x$. The best ...
Routing and scheduling optimization for urban air mobility fleet management using quantum annealing
Renichiro Haba, Takuya Mano, Ryosuke Ueda +4 more·Oct 15, 2024
The growing integration of urban air mobility (UAM) for urban transportation and delivery has accelerated due to increasing traffic congestion and its environmental and economic repercussions. Efficiently managing the anticipated high-density air tra...
Operator algebra and algorithmic construction of boundaries and defects in (2+1)D topological Pauli stabilizer codes
Zijian Liang, Bowen Yang, Joseph T. Iosue +1 more·Oct 15, 2024
Quantum low-density parity-check codes, such as the Kitaev toric code and bivariate bicycle codes, are often defined with periodic boundary conditions, which are difficult to realize in physical systems. In this paper, we present an algorithm for con...
Generating entanglement of two acoustic modes by driving the qubit in a circuit quantum acoustodynamics system
Mei-Rong Wei, Qi Guo, Gang Li +1 more·Oct 15, 2024
We propose how to generate the entanglement of two long-lived phonon modes in a circuit quantum acoustodynamics system, which consists of a multi-mode high-frequency bulk acoustic wave resonator and a transmon-type superconducting qubit. Two acoustic...
Resource-adaptive quantum flow algorithms for quantum simulations of many-body systems: sub-flow embedding procedures
Karol Kowalski, Nicholas P. Bauman·Oct 15, 2024
In this study, we utilised the quantum flow (QFlow) method to perform quantum simulations of correlated systems. The QFlow approach allows for sampling large sub-spaces of the Hilbert space by solving coupled variational problems in reduced dimension...
Non-unitarity maximizing unraveling of open quantum dynamics
Ruben Daraban, Fabrizio Salas-Ram'irez, J. Schachenmayer·Oct 15, 2024
The dynamics of many-body quantum states in open systems is commonly numerically simulated by unraveling the density matrix into pure-state trajectories. In this work, we introduce a new unraveling strategy that can adaptively minimize the averaged e...
Theoretical Analysis of the Efficient-Memory Matrix Storage Method for Quantum Emulation Accelerators with Gate Fusion on FPGAs
Tran Xuan Hieu Le, H. Pham, Tuan Hai Vu +2 more·Oct 15, 2024
Quantum emulators play an important role in the development and testing of quantum algorithms, especially given the limitations of the current FTQC era. Developing high-speed, memory-optimized quantum emulators is a growing research trend, with gate ...
Low-noise Optomechanical Single Phonon-photon Conversion for Quantum Networks
Liu Chen, Alexander Rolf Korsch, Cauê Moreno Kersul +4 more·Oct 14, 2024
Nano-structured optomechanical crystals (OMC) form an interface between mechanical modes with long coherence times and telecom optical photons, ideal for long-distance distribution of quantum information. However, the implementation of scalable quant...
Adaptive, symmetry-informed Bayesian metrology for precise quantum technology measurements
Matt Overton, Jesús Rubio, Nathan Cooper +4 more·Oct 14, 2024
High precision measurements are essential to solve major scientific and technological challenges, from gravitational wave detection to healthcare diagnostics. Quantum sensing delivers greater precision, but an in-depth optimisation of measurement pro...
Tachyonic and parametric instabilities in an extended bosonic Josephson junction
Laura Batini, Sebastian Erne, Jörg Schmiedmayer +1 more·Oct 14, 2024
We study the dynamics and decay of quantum phase coherence for Bose-Einstein condensates in tunnel-coupled quantum wires. The two elongated Bose-Einstein condensates exhibit a wide variety of dynamic phenomena where quantum fluctuations can lead to a...
Wire Codes
Nouédyn Baspin, Dominic Williamson·Oct 14, 2024
Quantum information is fragile and must be protected by a quantum error-correcting code for large-scale practical applications. Recently, highly efficient quantum codes have been discovered which require a high degree of spatial connectivity. This ra...
Application of zero-noise extrapolation-based quantum error mitigation to a silicon spin qubit
H. Sohn, Jae-Wan Jung, Jaemin Park +5 more·Oct 14, 2024
As quantum computing advances towards practical applications, reducing errors remains a crucial frontier for developing near-term devices. Errors in the quantum gates and quantum state readout could result in noisy circuits, which would prevent the a...