Papers
Live trends in quantum computing research, updated daily from arXiv.
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Improved distributed quantum algorithm for Simon's problem
Hao Li, Daowen Qiu·Apr 13, 2025
Simon's problem is one of the most important problems demonstrating the power of quantum computing. Recently, an interesting distributed quantum algorithm for Simon's problem was proposed, where a key sorting operator requiring a large number of qubi...
An Efficient Quantum Classifier Based on Hamiltonian Representations
Federico Tiblias, Anna Schroeder, Yue Zhang +2 more·Apr 13, 2025
Quantum machine learning (QML) is a discipline that seeks to transfer the advantages of quantum computing to data-driven tasks. However, many studies rely on toy datasets or heavy feature reduction, raising concerns about their scalability. Progress ...
Survival of the Optimized: An Evolutionary Approach to T-depth Reduction
Archisman Ghosh, Avimita Chatterjee, Swaroop Ghosh·Apr 13, 2025
Quantum Error Correction (QEC) is the corner-stone of practical Fault-Tolerant Quantum Computing (FTQC), but incurs enormous resource overheads. Circuits must decompose into Clifford +T gates, and the non-transversal T gates demand costly magic-state...
Distributed quantum algorithm for discrete logarithm problem
Hao Li, Daowen Qiu·Apr 13, 2025
The quantum algorithm with polynomial time for discrete logarithm problem proposed by Shor is one of the most significant quantum algorithms, but a large number of qubits may be required in the Noisy Intermediate-scale Quantum (NISQ) era. The main co...
Hierarchical Quantum Optimization via Backbone-Driven Problem Decomposition: Integrating Tabu-Search with QAOA
M. Gou, Zeyang Li, Hong-Ze Xu +6 more·Apr 13, 2025
As quantum computing advances, quantum approximate optimization algorithms (QAOA) have shown promise in addressing combinatorial optimization problems. However, the limitations of Noisy Intermediate Scale Quantum (NISQ) devices hinder the scalability...
An Exact Link between Nonlocal Nonstabilizerness and Operator Entanglement
Faidon Andreadakis, Paolo Zanardi·Apr 12, 2025
Nonstabilizerness is a quantum property of states associated with the non-Clifford resources required for their preparation. As a resource, nonstabilizerness complements entanglement, and the interplay between these two concepts has garnered signific...
From spin to pseudospin symmetry: The origin of magic numbers in nuclear structure
C. R. Ding, C. C. Wang, J. M. Yao +3 more·Apr 12, 2025
Magic numbers lie at the heart of nuclear structure, reflecting enhanced stability in nuclei with closed shells. While the emergence of magic numbers beyond 20 is commonly attributed to strong spin-orbit coupling, the microscopic origin of the spin-o...
Compact Circuits for Constrained Quantum Evolutions of Sparse Operators
Franz G. Fuchs, R. P. Bassa·Apr 12, 2025
We introduce a general framework for constructing compact quantum circuits that implement the real-time evolution of Hamiltonians of the form $H = \sigma P_B$, where $\sigma$ is a Pauli string commuting with a projection operator $P_B$ onto a subspac...
Spatial and temporal circuit cutting with hypergraphic partitioning
Waldemir Cambiucci, R. M. Silveira, W. Ruggiero·Apr 12, 2025
Quantum computing promises to revolutionize problem-solving through quantum mechanics, but current NISQ devices face limitations in qubit count and error rates, hindering the execution of large-scale quantum circuits. To address these challenges and ...
Tile Codes: High-Efficiency Quantum Codes on a Lattice with Boundary.
Vincent Steffan, Shin Ho Choe, N. P. Breuckmann +2 more·Apr 12, 2025
We introduce tile codes, a simple yet powerful way of constructing quantum codes that are local on a planar 2D lattice. Tile codes generalize the usual surface code by allowing for a bit more flexibility in terms of locality and stabilizer weight. Ou...
SW-TNC : Reaching the Most Complex Random Quantum Circuit via Tensor Network Contraction
Yaojian Chen, Zhaoqi Sun, Cheng Qiu +5 more·Apr 12, 2025
Classical simulation is essential in quantum algorithm development and quantum device verification. With the increasing complexity and diversity of quantum circuit structures, existing classical simulation algorithms need to be improved and extended....
Chip-Based 16 GBaud Continuous-Variable Quantum Key Distribution
A. Hajomer, A. Bomhals, C. Bruynsteen +5 more·Apr 12, 2025
Quantum key distribution (QKD) stands as the most successful application of quantum information science, providing information-theoretic security for key exchange. While it has evolved from proof-of-concept experiments to commercial products, widespr...
Identifying Protein Co-Regulatory Network Logic by Solving B-Sat Problems Through Gate-Based Quantum Computing
Aspen Erlandsson Brisebois, Jason Broderick, Zahed Khatooni +3 more·Apr 12, 2025
There is growing awareness that the success of pharmacologic interventions on living organisms is significantly impacted by context and timing of exposure. In turn, this complexity is leading to an increasing focus on regulatory network dynamics in b...
Non-Abelian Extensions of the Dirac Oscillator: A Theoretical Approach
Abdelmalek Boumali, Sarra Garrah·Apr 11, 2025
We formulate the Dirac oscillator covariantly in the presence of external non-Abelian gauge fields. More precisely, the matter field is written as $Ψ_{αA}(x)$, where $α$ denotes the Dirac index and $A$ the isospin index, so that the Hamiltonian acts ...
Fault-tolerant protocols through spacetime concatenation
Yichen Xu, Arpit Dua·Apr 11, 2025
We introduce a framework called spacetime concatenation for fault-tolerant compilation of syndrome extraction circuits of stabilizer codes. Spacetime concatenation enables efficient compilation of syndrome extraction circuits into dynamical codes thr...
Engineering diamond interfaces free of dark spins
Xiaofei Yu, Evan J. Villafranca, Stella Wang +10 more·Apr 11, 2025
Nitrogen-vacancy (NV) centers in diamond are extensively utilized as quantum sensors for imaging fields at the nanoscale. The ultra-high sensitivity of NV magnetometers has enabled the detection and spectroscopy of individual electron spins, with pot...
Holographic duality from Howe duality: Chern-Simons gravity as an ensemble of code CFTs
Anatoly Dymarsky, Johan Henriksson, Brian McPeak·Apr 11, 2025
We discuss the holographic correspondence between 3d "Chern-Simons gravity" and an ensemble of 2d Narain code CFTs. Starting from 3d abelian Chern-Simons theory, we construct an ensemble of boundary CFTs defined by gauging all possible maximal subgro...
Imaginary gauge potentials in a non-Hermitian spin-orbit coupled quantum gas
Junheng Tao, Emmanuel Mercado-Gutierrez, Mingshu Zhao +1 more·Apr 11, 2025
In 1996, Hatano and Nelson proposed a non-Hermitian lattice model containing an imaginary Peierls phase [Phys. Rev. Lett. 77 570-573 (1996)], which subsequent analyses revealed to be an instance of a new class of topological systems. Here, we experim...
Bootstrapping Shape Invariance: Numerical Bootstrap as a Detector of Solvable Systems
Yu Aikawa, Takeshi Morita·Apr 11, 2025
Determining the solvability of a given quantum mechanical system is generally challenging. We discuss that the numerical bootstrap method can help us to solve this question in one-dimensional quantum mechanics. We show that the bootstrap method can d...
Temperature and non-Markovian parameter estimation in quantum Brownian motion
João C. P. Porto, Carlos H. S. Vieira, Irismar G. da Paz +2 more·Apr 11, 2025
We investigate a quantum metrological protocol operating in a non-Markovian environment by employing the quantum Brownian motion (QBM) model, in which the system is linearly coupled to a reservoir of harmonic oscillators. Specifically, we use a posit...