Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,638 papers in 12 months (-16% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Approximate Dynamical Quantum Error-Correcting Codes
Nirupam Basak, Andrew Tanggara, Ankith Mohan +2 more·Feb 13, 2025
Quantum error correction plays a critical role in enabling fault-tolerant quantum computing by protecting fragile quantum information from noise. While general-purpose quantum error correction codes are designed to address a wide range of noise types...
Constant-Overhead Fault-Tolerant Bell-Pair Distillation Using High-Rate Codes.
J. Pablo, Bonilla Ataides, Hengyun Zhou +5 more·Feb 13, 2025
We present a fault-tolerant Bell-pair distillation scheme achieving constant overhead through high-rate quantum low-density parity-check (qLDPC) codes. Our approach maintains a constant distillation rate equal to the code rate while requiring no addi...
Quantum circuit for non-unitary linear transformation of basis sets
Guorui Zhu, Joel Bierman, Jianfeng Lu +1 more·Feb 13, 2025
This paper presents a novel approach for implementing non-unitary basis transformations on quantum computational platforms, extending beyond conventional unitary methods. By integrating Singular Value Decomposition (SVD), the method achieves operatio...
Quantum Speed Limit and Quantum Thermodynamic Uncertainty Relation under Feedback Control
H. Yunoki, Y. Hasegawa·Feb 13, 2025
Fundamental trade-off relations, such as quantum speed limit and quantum thermodynamic uncertainty relation, describe the performance limits of quantum systems by imposing that improvements in speed or precision necessitate a substantial thermodynami...
Implementation and Analysis of Regev's Quantum Factorization Algorithm
Przemyslaw Pawlitko, Natalia Mo'cko, Marcin Niemiec +1 more·Feb 13, 2025
Quantum computing represents a significant advancement in computational capabilities. Of particular concern is its impact on asymmetric cryptography through, notably, Shor's algorithm and the more recently developed Regev's algorithm for factoring co...
Quantum Trojan Insertion: Controlled Activation for Covert Circuit Manipulation
Jayden John, Lakshman Golla, Qian Wang·Feb 13, 2025
Quantum computing has demonstrated superior efficiency compared to classical computing. Quantum circuits are essential for implementing functions and achieving correct computational outcomes. Quantum circuit compilers, which translate high-level quan...
Scalable Optical Quantum State Synthesizer with Dual-Mode Resonator Memory
F. Hanamura, Kan Takase, Kazuki Hirota +12 more·Feb 13, 2025
Optical quantum computing is a promising approach for achieving large-scale quantum computation. While Gaussian operations have been successfully scaled, the inherently weak nonlinearity in optics makes generating highly non-Gaussian states a criti...
Provable and Verifiable Quantum Advantage in Sample Complexity
Marcello Benedetti, Harry Buhrman, Jordi Weggemans·Feb 12, 2025
Consider a fixed universe of $N=2^n$ elements and the uniform distribution over elements of some subset of size $K$. Given samples from this distribution, the task of complement sampling is to provide a sample from the complementary subset. We give a...
Absorbing state transitions with discrete symmetries
Hyunsoo Ha, David A. Huse, Rhine Samajdar·Feb 12, 2025
Robust phases of matter, which remain stable under small perturbations, are of fundamental importance in statistical physics and quantum information. Recent advances in interactive quantum dynamics have led to renewed interest in out-of-equilibrium d...
Bound entanglement-assisted prepare-and-measure scenarios based on four-dimensional quantum messages
Istv'an M'arton, Erika Bene, Tam'as V'ertesi·Feb 12, 2025
We present a class of linear correlation witnesses that detects bound entanglement within a three-party prepare-and-measure scenario with four-dimensional quantum messages. We relate the detection power of our witnesses for two-ququart Bloch-product-...
Assessing Quantum Layout Synthesis Tools via Known Optimal-SWAP Cost Benchmarks
Shuohao Ping, Wan-Hsuan Lin, Daniel Bochen Tan +1 more·Feb 12, 2025
Quantum layout synthesis (QLS) is a critical step in quantum program compilation for superconducting quantum computers, involving the insertion of SWAP gates to satisfy hardware connectivity constraints. While previous works have introduced SWAP-free...
Kitaev-Ising-$J_1$-$J_2$ model: a density matrix renormalization group study
A. V. Kapranov, R. Akzyanov·Feb 12, 2025
We numerically study the Kitaev honeycomb model with the additional XX Ising interaction between the nearest and the next nearest neighbors (Kitaev-Ising-$J_1$-$J_2$ model), by using the density matrix renormalization group (DMRG) method. Such additi...
Adiabatic quantum unstructured search in parallel
Sean A. Adamson, P. Wallden·Feb 12, 2025
We present an optimized adiabatic quantum schedule for unstructured search building on the original approach of Roland and Cerf [Phys. Rev. A 65, 042308 (2002)]. Our schedule adiabatically varies the Hamiltonian even more rapidly at the endpoints of ...
A quantum speedup algorithm for TSP based on quantum dynamic programming with very few qubits
X. Bai, Y. Shang·Feb 12, 2025
The Traveling Salesman Problem (TSP) is a classical NP-hard problem that plays a crucial role in combinatorial optimization. In this paper, we are interested in the quantum search framework for the TSP because it has robust theoretical guarantees. Ho...
CV4Quantum: Reducing the Sampling Overhead in Probabilistic Error Cancellation Using Control Variates
P. Shyamsundar, Wern Yeong·Feb 12, 2025
Quasiprobabilistic decompositions (QPDs) play a key role in maximizing the utility of near-term quantum hardware. For example, Probabilistic Error Cancellation (PEC) (an error mitigation technique) and circuit cutting (which enables large quantum com...
Computing Efficiently in QLDPC Codes
Alexander J. Malcolm, Andrew N. Glaudell, Patricio Fuentes +10 more·Feb 11, 2025
It is the prevailing belief that quantum error correcting techniques will be required to build a utility-scale quantum computer able to perform computations that are out of reach of classical computers. The QECCs that have been most extensively studi...
Enhancing dissipative cat qubit protection by squeezing
R'emi Rousseau, Diego Ruiz, E. Albertinale +38 more·Feb 11, 2025
Dissipative cat-qubits are a promising architecture for quantum processors due to their built-in quantum error correction. By leveraging two-photon stabilization, they achieve an exponentially suppressed bit-flip error rate as the distance in phase-s...
Practical classical error correction for parity-encoded spin systems
Yoshihiro Nambu·Feb 11, 2025
Quantum annealing (QA) has emerged as a promising candidate for fast solvers for combinatorial optimization problems (COPs) and has attracted the interest of many researchers. Since COP is logically encoded in the Ising interaction among spins, its r...
Estimation of Nonlinear Physical Quantities By Measuring Ancillas
Nhat A. Nghiem, Tzu-Chieh Wei·Feb 11, 2025
In this article, we present quantum algorithms for estimating von Neumann entropy and Renyi entropy, which are crucial physical and information-theoretical properties of a given quantum state $\rho$. Although there have been existing works that achie...
An Efficient Iterative Algorithm for Qubit Mapping Via Layer‐Weight Assignment and Search Space Reduction
Kang Xu, Zeyang Li, Xinjian Liu +2 more·Feb 11, 2025
Current quantum devices support interactions only between physically adjacent qubits, preventing quantum circuits from being directly executed on these devices. Therefore, SWAP gates are required to remap logical qubits to physical qubits, which in t...