Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Approximate Amplitude Encoding with the Adaptive Interpolating Quantum Transform
Gekko Budiutama, Shunsuke Daimon, Xinchi Huang +2 more·Mar 4, 2026
Amplitude encoding of real-world data on quantum computers is often the workflow bottleneck: direct amplitude encoding scales poorly with input size and can offset any speedups in subsequent processing. Fourier-based sparse amplitude encoding lowers ...
Variational Quantum Transduction
Pengcheng Liao, Haowei Shi, Quntao Zhuang·Mar 4, 2026
Quantum transducers are critical for quantum interconnect, enabling coherent signal transfer across disparate frequency domains. Beyond material and device advances, protocol design has become a powerful means to improve transduction. We introduce a ...
Frequency-Time Multiplexing for Near-Deterministic Generation of n-Photon Frequency-Bin States
Alex Fischer, Nathan T. Arnold, Colin P. Lualdi +5 more·Mar 3, 2026
One of the primary challenges of photonic quantum information processing is the on-demand preparation of multiple single-photon-level quantum states from probabilistic photon pair sources. Motivated by recent developments in frequency-bin-encoded pho...
Sleeping Beauty in One or Many Worlds: A Defense of the Halfer Position
Jiaxuan Zhang·Mar 3, 2026
The Sleeping Beauty Problem (SBP) is a long-standing puzzle in classical probability theory and has been used to challenge the Many-Worlds Interpretation (MWI) of quantum mechanics, since both involve objective determinacy combined with subjective un...
Adversarial Learning Game for Intrusion Detection in Quantum Key Distribution
Noureldin Mohamed, Saif Al-Kuwari·Mar 3, 2026
While Quantum Key Distribution (QKD) provides information-theoretic security, the transition from theory to physical hardware introduces side-channel vulnerabilities that traditional error metrics often fail to characterize. This paper presents a hig...
Multi-Parameter Multi-Critical Metrology of the Dicke Model
Luca Previdi, Yilun Xu, Qiongyi He +1 more·Mar 3, 2026
Critical quantum metrology exploits the hypersensitivity of quantum systems near phase transitions to achieve enhanced precision in parameter estimation. While single-parameter estimation near critical points is well established, the simultaneous est...
Phase-space complexity of discrete-variable quantum states and operations
Siting Tang, Shunlong Luo, Matteo G. A. Paris·Mar 3, 2026
We introduce a quantifier of phase-space complexity for discrete-variable (DV) quantum systems. Motivated by a recent framework developed for continuous-variable systems, we construct a complexity measure of quantum states based on the Husimi Q-funct...
Bayesian post-correction of non-Markovian errors in bosonic lattice gravimetry
Bharath Hebbe Madhusudhana, Andrew Harter, Avadh Saxena·Mar 3, 2026
We study gravimetry with bosonic trapped atoms in the presence of random spatial inhomogeneity. The errors resulting from a random, shot-to-shot fluctuating spatial inhomogeneity are quantum non-Markovian. We show that in a system with $L>2$ modes (i...
Photonic hyperentanglement in polarisation and frequency via joint spectrum shaping
Tommaso Faleo, Fabian Steinhauser, Gregor Weihs +2 more·Mar 3, 2026
Hyperentanglement offers enhanced capacity for quantum information processing and communication protocols, especially in combination with robust high-dimensional degrees of freedom such as frequency-bin encoding. Here, we present a single-pass, unfil...
Quantum-Inspired Hamiltonian Feature Extraction for ADMET Prediction: A Simulation Study
B. Maurice Benson, Kendall Byler, Anna Petroff +2 more·Mar 3, 2026
Predicting absorption, distribution, metabolism, excretion, and toxicity (ADMET) properties remains a critical bottleneck in drug discovery. While molecular fingerprints effectively capture local structural features, they struggle to represent higher...
Tripartite information of free fermions: a universal entanglement coefficient from the sine kernel
Aleksandrs Sokolovs·Mar 3, 2026
We study the tripartite information I_3 of free fermions on two-dimensional lattices partitioned into three adjacent strips of width w. Translation invariance yields the exact decomposition I_3 = \sum_{k_y} g(k_F(k_y) w), where g(z) is a universal fu...
Exact stabilizer scars in two-dimensional $U(1)$ lattice gauge theory
Sabhyata Gupta, Piotr Sierant, Luis Santos +1 more·Mar 3, 2026
The complexity of highly excited eigenstates is a central theme in nonequilibrium many-body physics, underpining questions of thermalization, classical simulability, and quantum information structure. In this work, considering the paradigmatic Rokhsa...
Analytical Quantum Full-Wave Analysis of Few-Photon Transport Through a Superconducting Cavity Qubit
Soomin Moon, Thomas E. Roth·Mar 3, 2026
A promising way to scale up superconducting quantum computers is to link different devices together using propagating photons. Correspondingly, accurately modeling the quantum information transfer in such quantum interconnects is critical to advancin...
Causal Learning Should Embrace the Wisdom of the Crowd
Ryan Feng Lin, Yuantao Wei, Huiling Liao +2 more·Mar 3, 2026
Learning causal structures typically represented by directed acyclic graphs (DAGs) from observational data is notoriously challenging due to the combinatorial explosion of possible graphs and inherent ambiguities in observations. This paper argues th...
Qudit Designs and Where to Find Them
Namit Anand, Jeffrey Marshall, Jason Saied +2 more·Mar 3, 2026
Unitary t-designs are some of the most versatile tools in quantum information theory. Their applications range from randomized benchmarking and shadow tomography, to more fundamental ones such as emulating quantum chaos and establishing exponential s...
Steering paths mid-flight for fault-tolerance in measurement-based holonomic gates
Anirudh Lanka, Juan Garcia-Nila, Todd A. Brun·Mar 3, 2026
Continuous measurement-based holonomic quantum computation provides a route to universal logical computation in quantum error correcting codes. We introduce a fault-tolerant framework for implementing measurement-based holonomic gates that leverages ...
RIS-Enabled Wireless Channel Equalization: Adaptive RIS Equalizer and Deep Reinforcement Learning
Gal Ben-Itzhak, Ender Ayanoglu·Mar 3, 2026
Reconfigurable Intelligent Surfaces (RISs) offer a promising means of reshaping the wireless propagation environment, yet practical methods for configuring large passive arrays to achieve reliable signal equalization remain limited. Equalization is e...
Barenco gate implementation using driven two- and three-qubit spin chains
Rafael Vieira, Edgard P. M. Amorim·Mar 2, 2026
We propose a protocol for implementing Barenco-type multi-qubit controlled gates using short driven spin chains. Starting from an Ising interaction with a transverse drive on the last spin, we construct an effective two-qubit Hamiltonian whose time e...
EAQKD: Entanglement-Based Authenticated Quantum Key Distribution
Noureldin Mohamed, Saif Al-Kuwari·Mar 2, 2026
The promise of unconditional security in the Quantum Key Distribution (QKD) depends on the availability of an authenticated classical channel. However, practical implementations often overlook this requirement or rely on computational assumptions tha...
Single-photon emitters and spin-photon interfaces in silicon
Kilian Sandholzer, Ian Berkman, Peter Deák +5 more·Mar 2, 2026
Single photons enable the distribution of quantum information over large distances and thus play a major role in quantum technologies such as communication and computing. Solid-state emitters are practical and efficient sources of single photons that...