Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum Wasserstein Compilation: Unitary Compilation using the Quantum Earth Mover's Distance
M. Richter, Abhishek Y. Dubey, A. Plinge +3 more·Sep 9, 2024
Despite advances in the development of quantum computers, the practical application of quantum algorithms requiring deep circuit depths or high-fidelity transformations remains outside the current range of the so-called noisy intermediate-scale quant...
Universal quantum gate set for Gottesman–Kitaev–Preskill logical qubits
V. G. Matsos, C. Valahu, M. Millican +4 more·Sep 9, 2024
Conventional approaches towards creating a large-scale, fault-tolerant quantum computer require an error correction scheme that uses multiple physical qubits to encode one logical qubit of protected quantum information. A key limiting factor in reali...
Learning to classify quantum phases of matter with a few measurements
Mehran Khosrojerdi, Jason L. Pereira, A. Cuccoli +1 more·Sep 8, 2024
We study the identification of quantum phases of matter, at zero temperature, when only part of the phase diagram is known in advance. Following a supervised learning approach, we show how to use our previous knowledge to construct an observable capa...
Delay Balancing With Clock-Follow-Data: Optimizing Area Delay Tradeoffs for Robust Rapid Single Flux Quantum Circuits
Robert S. Aviles, Phalgun G K, P. Beerel·Sep 8, 2024
This article proposes an algorithm for synthesis of clock-follow-data designs that provide robustness against timing violations for rapid single-flux quantum (RSFQ) circuits, minimizing area costs subject to a given performance constraint. Since all ...
Entropy-driven entanglement forging
Axel P'erez-Obiol, S. Masot-Llima, Antonio M. Romero +4 more·Sep 6, 2024
Simulating physical systems with variational quantum algorithms is a well-studied approach, but it is challenging to implement in current devices due to demands in qubit number and circuit depth. We show how limited knowledge of the system, namely th...
Experimental Quantum Simulation of Chemical Dynamics.
T. Navickas, R. MacDonell, C. Valahu +10 more·Sep 6, 2024
Accurate simulation of dynamic processes in molecules and reactions is among the most challenging problems in quantum chemistry. Quantum computers promise efficient chemical simulation, but the existing quantum algorithms require many logical qubits ...
PARALLAX: A Compiler for Neutral Atom Quantum Computers under Hardware Constraints
J. Ludmir, Tirthak Patel·Sep 6, 2024
Among different quantum computing technologies, neutral atom quantum computers have several advantageous features, such as multi-qubit gates, application-specific topologies, movable qubits, homogenous qubits, and long-range interactions. However, ex...
Predicting quantum channels over general product distributions
Sitan Chen, Jaume de Dios Pont, Jun-Ting Hsieh +3 more·Sep 5, 2024
We investigate the problem of predicting the output behavior of unknown quantum channels. Given query access to an $n$-qubit channel $E$ and an observable $O$, we aim to learn the mapping \begin{equation*} \rho \mapsto \mathrm{Tr}(O E[\rho]) \end{equ...
DasAtom: A Divide-and-Shuttle Atom Approach to Quantum Circuit Transformation
Yunqi Huang, Dingchao Gao, Shenggang Ying +1 more·Sep 5, 2024
neutral atom (NA) quantum systems are emerging as a leading platform for quantum computation, offering superior or competitive qubit count and gate fidelity compared to superconducting circuits and ion traps. However, the unique features of NA device...
Splitting and connecting singlets in atomic quantum circuits
Zijie Zhu, Yann Kiefer, Samuel Jele +4 more·Sep 4, 2024
Gate operations composed in quantum circuits form the basis for digital quantum simulation and quantum processing. While two-qubit gates generally operate on nearest neighbours, many circuits require nonlocal connectivity and necessitate some form of...
The exact lower bound of CNOT-complexity for fault-tolerant quantum Fourier transform
Qiqing Xia, Huiqin Xie, Li Yang·Sep 4, 2024
The quantum Fourier transform (QFT) is a crucial subroutine in many quantum algorithms. In this paper, we study the exact lower bound problem of CNOT gate complexity for fault-tolerant QFT. First, we consider approximating the ancilla-free controlled...
Federated Quantum-Train with Batched Parameter Generation
Chen-Yu Liu, Samuel Yen-Chi Chen·Sep 4, 2024
In this work, we introduce the Federated Quantum-Train (QT) framework, which integrates the QT model into federated learning to leverage quantum computing for distributed learning systems. Quantum client nodes employ Quantum Neural Networks (QNNs) an...
Quantum State Preparation Circuit Optimization Exploiting Don't Cares
Hanyu Wang, Daniel Bochen Tan, Jason Cong·Sep 2, 2024
Quantum state preparation initializes the quantum registers and is essential for running quantum algorithms. Designing state preparation circuits that entangle qubits efficiently with fewer two-qubit gates enhances accuracy and alleviates coupling co...
Watermarking of Quantum Circuits
Rupshali Roy, Swaroop Ghosh·Sep 2, 2024
Quantum circuits constitute Intellectual Property (IP) of the quantum developers and users, which needs to be protected from theft by adversarial agents e.g., the quantum cloud provider or a rogue adversary present in the cloud. This necessitates the...
High-Precision Multi-Qubit Clifford+T Synthesis by Unitary Diagonalization
Mathias Weiden, Justin Kalloor, J. Kubiatowicz +2 more·Aug 31, 2024
Resource-efficient and high-precision approximate synthesis of quantum circuits expressed in the Clifford+T gate set is vital for Fault-Tolerant quantum computing. Efficient optimal methods are known for single-qubit RZ unitaries, otherwise the probl...
Resource state generation for a multispin register in a hybrid matter-photon quantum information processor
Yu Liu, Martin B. Plenio·Aug 30, 2024
Hybrid quantum architectures that integrate matter and photonic degrees of freedom present a promising pathway toward scalable, fault-tolerant quantum computing. This approach needs to combine well-established entangling operations between distant re...
Optimization of Postselection in Quantum Algorithms: A Two-Way Quantum Computing Approach
A. Linden, Betul Gul·Aug 30, 2024
Postselection is an operation that allows the selection of specific measurement outcomes. It serves as a powerful theoretical tool for enhancing the performance of existing quantum algorithms. Despite recent developments such as time reversal in quan...
Unconditional advantage of noisy qudit quantum circuits over biased threshold circuits in constant depth
Michael de Oliveira, Sathyawageeswar Subramanian, Leandro Mendes +1 more·Aug 29, 2024
The rapid evolution of quantum devices fuels concerted efforts to experimentally establish quantum advantage over classical computing. Many demonstrations of quantum advantage, however, rely on computational assumptions and face verification challeng...
A quantum random access memory (QRAM) using a polynomial encoding of binary strings
Priyanka Mukhopadhyay·Aug 28, 2024
Quantum algorithms claim significant speedup over their classical counterparts for solving many problems. An important aspect of many of these algorithms is the existence of a quantum oracle, which needs to be implemented efficiently in order to real...
Evaluation of Quantum Annealing-based algorithms for flexible job shop scheduling
Philipp Schworm, Xiangqian Wu, Matthias Klar +1 more·Aug 28, 2024
A flexible job shop scheduling problem (FJSSP) poses a complex optimization task in modeling real-world process scheduling tasks with conflicting objectives. To tackle FJSSPs, approximation methods are employed to ensure solutions are within acceptab...