Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
30,392
This Month
509
Today
0
Research Volume
14,831 papers in 12 months (-23% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Tomography-assisted noisy quantum circuit simulator using matrix product density operators
Wei Ma, Yun-hao Shi, Kai Xu +1 more·Sep 4, 2024
In recent years, efficient quantum circuit simulations incorporating ideal noise assumptions have relied on tensor network simulators, particularly leveraging the matrix product density operator (MPDO) framework. However, experiments on real noisy in...
QHDOPT: A Software for Nonlinear Optimization with Quantum Hamiltonian Descent
Samuel Kushnir, J. Leng, Yuxiang Peng +2 more·Sep 4, 2024
We develop an open-source, end-to-end software (named QHDOPT), which can solve nonlinear optimization problems using the quantum Hamiltonian descent (QHD) algorithm. QHDOPT offers an accessible interface and automatically maps tasks to various suppor...
Towards violations of Local Friendliness with quantum computers
William J. Zeng, Farrokh Labib, Vincent Russo·Sep 4, 2024
Local Friendliness (LF) inequalities follow from seemingly reasonable assumptions about reality: (i) “absoluteness of observed events'' (e.g., every observed event happens for all observers) and (ii) “local agency'' (e.g., free choices can be made un...
Distributed Quantum Computation via Entanglement Forging and Teleportation
Tian-Ren Jin, Kai Xu, Heng Fan·Sep 4, 2024
Distributed quantum computation is a practical method for large-scale quantum computation on quantum processors with limited size. It can be realized by direct quantum channels in flying qubits. Moreover, the pre-established quantum entanglements can...
Progress in Trapped-Ion Quantum Simulation
M. Foss-Feig, G. Pagano, Andrew C. Potter +1 more·Sep 4, 2024
Trapped ions offer long coherence times and high fidelity, programmable quantum operations, making them a promising platform for quantum simulation of condensed matter systems, quantum dynamics, and problems related to high-energy physics. We review ...
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...
Quantum transport on Bethe lattices with non-Hermitian sources and a drain
Naomichi Hatano, Hosho Katsura, Kohei Kawabata·Sep 3, 2024
We consider quantum transport in a tight-binding model on the Bethe lattice of finite generation, which we expect to be the first step toward analyzing electronic transport in a light-harvesting molecule. We seek conditions under which the electronic...
Learning out-of-time-ordered correlators with classical kernel methods
John Tanner, J. Pye, Jingbo B. Wang·Sep 3, 2024
Out-of-Time Ordered Correlators (OTOCs) are widely used to investigate information scrambling in quantum systems. However, directly computing OTOCs with classical computers is an expensive procedure. This is due to the need to classically simulate th...
Estimating the coherence of noise in mid-scale quantum systems
Pedro Figueroa–Romero, M. Papivc, Adrian Auer +1 more·Sep 3, 2024
While the power of quantum computers is commonly acknowledged to rise exponentially, it is often overlooked that the complexity of quantum noise mechanisms generally grows much faster. In particular, quantifying whether the instructions on a quantum ...
Effective Distance of Higher Dimensional HGPs and Weight-Reduced Quantum LDPC Codes
S. Tan, Lev Stambler·Sep 3, 2024
Quantum error correction plays a prominent role in the realization of quantum computation, and quantum low-density parity-check (qLDPC) codes are believed to be practically useful stabilizer codes. While qLDPC codes are defined to have constant weigh...
Classically estimating observables of noiseless quantum circuits
Armando Angrisani, Alexander Schmidhuber, Manuel S. Rudolph +3 more·Sep 3, 2024
We present a classical algorithm based on Pauli propagation for estimating expectation values of arbitrary observables on random unstructured quantum circuits across all circuit architectures and depths, including those with all-to-all connectivity. ...
Quantum Algorithms for One-Sided Crossing Minimization
Susanna Caroppo, G. D. Lozzo, G. Battista·Sep 3, 2024
We present singly-exponential quantum algorithms for the One-Sided Crossing Minimization (OSCM) problem. Given an $n$-vertex bipartite graph $G=(U,V,E\subseteq U \times V)$, a $2$-level drawing $(\pi_U,\pi_V)$ of $G$ is described by a linear ordering...
HATT: Hamiltonian Adaptive Ternary Tree for Optimizing Fermion-to-Qubit Mapping
Yuhao Liu, Kevin Yao, Jonathan Hong +5 more·Sep 3, 2024
This paper introduces the Hamiltonian-Adaptive Ternary Tree (HATT) framework to compile optimized Fermion-to-qubit mapping for specific Fermionic Hamiltonians. In the simulation of Fermionic quantum systems, efficient Fermion-toqubit mapping plays a ...
Angular Momentum Entanglement Mediated By General Relativistic Frame Dragging
Trinidad B. Lantaño, Luciano Petruzziello, Susana F. Huelga +1 more·Sep 2, 2024
Current proposals to probe the quantum nature of gravity in the low-energy regime predominantly focus on the Newtonian interaction term. In this work, we present a theoretical exploration of gravitationally mediated entanglement arising from a genuin...
The optical architecture of a heterogenous quantum network deployed in production facilities
Alberto Sebastián-Lombraña, Hans H. Brunner, David Rincón +15 more·Sep 2, 2024
Quantum Communications promise advances in cryptography, quantum computing and clock synchronisation, among other emerging applications. However, communication based on quantum phenomena requires an extreme level of isolation from external disturbanc...
INTENTAS -- An entanglement-enhanced atomic sensor for microgravity
O. Anton, I. Bröckel, D. Derr +21 more·Sep 2, 2024
The INTENTAS project aims to develop an atomic sensor utilizing entangled Bose-Einstein condensates (BECs) in a microgravity environment. This key achievement is necessary to advance the capability for measurements that benefit from both entanglement...
An almost-linear time decoding algorithm for quantum LDPC codes under circuit-level noise
Antonio deMarti iOlius, Imanol Martinez, Joschka Roffe +1 more·Sep 2, 2024
Fault-tolerant quantum computers must be designed in conjunction with classical co-processors that decode quantum error correction measurement information in real-time. In this work, we introduce the belief propagation plus ordered Tanner forest (BP+...
Can Geometric Quantum Machine Learning Lead to Advantage in Barcode Classification?
Chukwudubem Umeano, Stefano Scali, O. Kyriienko·Sep 2, 2024
We consider the problem of distinguishing two vectors (visualized as images or barcodes) and learning if they are related to one another. For this, we develop a geometric quantum machine learning (GQML) approach with embedded symmetries that allows f...
Optimization by Parallel Quasi-Quantum Annealing with Gradient-Based Sampling
Yuma Ichikawa, Yamato Arai·Sep 2, 2024
Learning-based methods have gained attention as general-purpose solvers due to their ability to automatically learn problem-specific heuristics, reducing the need for manually crafted heuristics. However, these methods often face scalability challeng...
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...