Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Experimentally Informed Decoding of Stabilizer Codes Based on Syndrome Correlations
A. Remm, N. Lacroix, Lukas Bodeker +9 more·Feb 24, 2025
High-fidelity decoding of quantum error correction codes relies on an accurate experimental model of the physical errors occurring in the device. Because error probabilities can depend on the context of the applied operations, the error model is idea...
Information-theoretic principle of emergent 1-form symmetries
Yu-Jie Liu, Wen-Tao Xu, Frank Pollmann +1 more·Feb 24, 2025
Higher-form symmetries act on sub-dimensional spatial manifolds of a quantum system. They can emerge as an exact symmetry at low energies even when they are explicitly broken at the microscopic level, making them difficult to characterize. In this wo...
From exponential to quadratic: optimal control for a frustrated Ising ring model
Ruiyi Wang, Vincenzo Roberto Arezzo, Kiran Thengil +2 more·Feb 24, 2025
Exponentially small spectral gaps are known to be the crucial bottleneck for traditional Quantum Annealing (QA) based on interpolating between two Hamiltonians, a simple driving term and the complex problem to be solved, with a linear schedule in tim...
Quantum-Safe integration of TLS in SDN networks
Jaime S. Buruaga, Rub'en B. M'endez, J. P. Brito +1 more·Feb 24, 2025
Shor's algorithm efficiently solves factoring and discrete logarithm problems using quantum computers, compromising all public key schemes used today. These schemes rely on assumptions on their computational complexity, which quantum computers can ea...
Quantum Encoding of Structured Data with Matrix Product States
Josh Green, Jingbo B Wang·Feb 23, 2025
The amplitude encoding of an arbitrary $n$-qubit state vector requires $Ω(2^n)$ gate operations, owing to the exponential dimension of the Hilbert space. We can, however, form dimensionality-reduced representations of quantum states using matrix prod...
Voltage noise thermometry in integrated circuits at millikelvin temperatures
G. Ridgard, M. Thompson, L. Schreckenberg +5 more·Feb 23, 2025
This paper demonstrates the use of voltage noise thermometry, with a cross-correlation technique, as a dissipation-free method of thermometry inside a CMOS integrated circuit (IC). We show that this technique exhibits broad agreement with the refrige...
OPAQUE: Obfuscating Phase in Quantum Circuit Compilation for Efficient IP Protection
Anees Rehman, Vincent Langford, Yuntao Liu·Feb 23, 2025
Quantum compilers play a crucial role in quantum computing by converting these algorithmic quantum circuits into forms compatible with specific quantum computer hardware. However, untrusted quantum compilers present considerable risks, including the ...
Quantum lattice Boltzmann method for simulating nonlinear fluid dynamics
Boyuan Wang, Zhaoyuan Meng, Yaomin Zhao +1 more·Feb 23, 2025
Quantum computing holds transformative potential for simulating nonlinear physical systems, such as fluid turbulence. However, mapping nonlinear dynamics to the linear operations required by quantum hardware remains a fundamental challenge. Here, we ...
Decision-tree decoders for general quantum LDPC codes
K. Ott, Bence Het'enyi, M. Beverland·Feb 23, 2025
We introduce Decision Tree Decoders (DTDs), which rely only on the sparsity of the binary check matrix, making them broadly applicable for decoding any quantum low-density parity-check (qLDPC) code and fault-tolerant quantum circuits. DTDs construct ...
Co-Designing Spectral Transformation Oracles with Hybrid Oscillator-Qubit Quantum Processors: From Algorithms to Compilation
Luke Bell, Yan Wang, Kevin C. Smith +3 more·Feb 22, 2025
We co-design a family of quantum eigenvalue transformation oracles that can be efficiently implemented on hybrid discrete/continuous-variable (qubit/qumode) hardware. To illustrate the oracle's representation-theoretic power and near-term experimenta...
EHands: Quantum Protocol for Polynomial Computation on Real-Valued Encoded States
Jan Balewski, C. Pestano, Mercy G. Amankwah +3 more·Feb 21, 2025
We present EHands, a quantum-native protocol for implementing multivariable polynomial transformations on quantum processors. The protocol introduces four fundamental, reversible operators: multiplication, addition, negation, and parity flip, and emp...
Qubit-Efficient Quantum Annealing for Stochastic Unit Commitment
Wei Hong, Wangkun Xu, Fei Teng·Feb 21, 2025
Stochastic Unit Commitment (SUC) has been proposed to manage the uncertainties driven by renewable integration, but it leads to significant computational complexity. When accelerated by Benders Decomposition (BD), the master problem becomes binary in...
Simulating Noncausality with Quantum Control of Causal Orders
Anna Steffinlongo, Hippolyte Dourdent·Feb 21, 2025
Logical consistency with free local operations is compatible with non-trivial classical communications, where all parties can be both in each other's past and future-a phenomenon known as noncausality. Noncausal processes, such as the "Lugano (AF/BW)...
Entanglement corner dependence in two-dimensional systems: A tensor network perspective
Noa Feldman, Moshe Goldstein·Feb 21, 2025
In continuous quantum field theories, the entanglement entropy of a subsystem with sharp corners on its boundary exhibits a universal corner-dependent contribution. We study this contribution through the lens of lattice discretization, and demonstrat...
Quantum autoencoders for image classification
Hinako Asaoka, Kazue Kudo·Feb 21, 2025
Classical machine learning often struggles with complex, high-dimensional data. Quantum machine learning offers a potential solution, promising more efficient processing. The quantum convolutional neural network (QCNN), a hybrid algorithm, fits curre...
Solving quadratic binary optimization problems using quantum SDP methods: Non-asymptotic running time analysis
Fabian Henze, Viet T. Tran, Birte Ostermann +3 more·Feb 21, 2025
Quantum computers can solve semidefinite programs (SDPs) using resources that scale better than state-of-the-art classical methods as a function of the problem dimension. At the same time, the known quantum algorithms scale very unfavorably in the pr...
Digitized counterdiabatic quantum critical dynamics
Anne-Maria Visuri, Alejandro Gomez Cadavid, Balaganchi A. Bhargava +6 more·Feb 20, 2025
We experimentally demonstrate that a digitized counterdiabatic quantum protocol reduces the number of topological defects created during a fast quench across a quantum phase transition. To show this, we perform quantum simulations of one- and two-dim...
Optimizing Continuous-Wave-Pumped Entanglement-based QKD in Noisy Environments
Hashir Kuniyil, Saif Al-Kuwari, Asad Ali +2 more·Feb 20, 2025
Quantum key distribution (QKD) has emerged as a promising solution to protect current cryptographic systems against the threat of quantum computers. As QKD transitions from laboratories to real-world applications, its implementation under various env...
Adaptive Non-Gaussian Quantum State Engineering
Valerio Crescimanna, Shang Yu, Khabat Heshami +1 more·Feb 20, 2025
Non-Gaussian quantum states of bosons are a key resource in quantum information science with applications ranging from quantum metrology to fault-tolerant quantum computation. Generation of photonic non-Gaussian resource states, such as Schrödinger's...
Exact non-Markovian master equations: a generalized derivation for Gaussian systems
Antonio D'Abbruzzo, Vittorio Giovannetti, Vasco Cavina·Feb 20, 2025
We derive an exact master equation that captures the dynamics of a quadratic quantum system linearly coupled to a Gaussian environment of the same statistics: the Gaussian Master Equation (GME). Unlike previous approaches, our formulation applies uni...