Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Realisation of Protected Cat Qutrit via Engineered Quantum Tunnelling
Sangil Kwon, Daisuke Hoshi, Toshiaki Nagase +8 more·Jan 25, 2026
Engineering quantum tunnelling in phase space has emerged as a viable method for creating a protected qubit with biased-noise properties. A promising approach is to combine a Kerr nonlinearity with multi-photon transitions, resulting in a system know...
Phase Diagrams of Information Backflow: Unifying Entanglement Revivals and Entropy Overshoots in Minimal Non-Markovian Models
Koichi Nakagawa·Jan 25, 2026
Memory effects in non-Markovian dynamics are often diagnosed either via quantum-correlation revivals or via non-monotonic classical information measures, yet a unified minimal framework comparing their ``backflow phases'' is still lacking. Here we pr...
Comment on "Aharonov-Bohm Phase is Locally Generated Like All Other Quantum Phases"
Shan Gao·Jan 25, 2026
Marletto and Vedral [Phys. Rev. Lett. 125, 040401 (2020)] propose that the Aharonov-Bohm (AB) phase is locally mediated by entanglement between a charged particle and the quantized electromagnetic field, asserting gauge independence for non-closed pa...
From Joint to Single-System Psi-Onticity Without Preparation Independence
Shan Gao·Jan 25, 2026
The Pusey-Barrett-Rudolph (PBR) theorem establishes $ψ$-onticity for individual quantum systems, but its standard formulation relies on the Preparation Independence Postulate (PIP). This has led to a prevalent view that rejecting PIP leaves open the ...
Generalized Aharonov-Bohm Effect
Shan Gao·Jan 25, 2026
The Aharonov-Bohm (AB) effect highlights the fundamental role of electromagnetic potentials in quantum mechanics, manifesting as a phase shift for a charged particle in field-free regions. While well-established for static magnetic fluxes, the effect...
Quantum reinforcement learning-based active flow control
Hongfu Zhang, Hui Tang·Jan 25, 2026
Active flow control remains a significant challenge due to the high-dimensional, nonlinear nature of fluid dynamics. Quantum machine learning may prove effective in addressing these issues, given that quantum computing possesses superiority over trad...
Holstein Primakoff spin codes for local and collective noise
Sivaprasad Omanakuttan, Tyler Thurtell, Andrew K. Forbes +2 more·Jan 24, 2026
Quantum error correction is essential for fault-tolerant quantum computation, yet most existing codes rely on local control and stabilizer measurements that are difficult to implement in systems dominated by collective interactions. Inspired by spin-...
PropHunt: Automated Optimization of Quantum Syndrome Measurement Circuits
Joshua Viszlai, Satvik Maurya, Swamit Tannu +2 more·Jan 24, 2026
Fault-Tolerant Quantum Computing (FTQC) relies on Quantum Error Correction (QEC) codes to reach error rates necessary for large scale quantum applications. At a physical level, QEC codes perform parity checks on data qubits, producing syndrome inform...
Autonomous phonon maser in levitated spin-mechanics
Mohamed Hatifi·Jan 24, 2026
Levitated nanodiamonds hosting a single nitrogen-vacancy (NV) center provide an ultra-low-frequency mechanical mode with widely tunable dissipation and spin backaction under microwave dressing and optical pumping. We demonstrate that the driven NV sp...
Quantum Phase Transitions in the Transverse-Field Ising Model: A Comparative Study of Exact, Variational, and Hardware-Based Approaches
Rudraksh Sharma·Jan 24, 2026
The quantum phase transitions provide a paradigm for studying collective quantum phenomena that are a result of competing non-commuting interactions. This paper will study the ground state properties and quantum critical dynamics of the one-dimension...
Are Quantum Voting Protocols Practical?
Nitin Jha, Abhishek Parakh·Jan 24, 2026
Quantum voting protocols aim to offer ballot secrecy and publicly verifiable tallies using physical guarantees from quantum mechanics, rather than relying solely on computational hardness. This article surveys whether such quantum voting protocols ar...
On the Impossibility of Simulation Security for Quantum Functional Encryption
Mohammed Barhoush, Arthur Mehta, Anne Müller +1 more·Jan 24, 2026
Functional encryption is a powerful cryptographic primitive that enables fine-grained access to encrypted data and underlies numerous applications. Although the ideal security notion for FE (simulation security) has been shown to be impossible in the...
Emission of nitrogen-vacancy centers in diamond shaped by topological photonic waveguide modes
Raman Kumar, Chandan, Gabriel I. López Morales +6 more·Jan 24, 2026
As the ability to integrate single photon emitters into photonic architectures improves, so does the need to characterize and understand their interaction. Here, we use a scanning diamond nanocrystal to investigate the interplay between the emission ...
Bayesian quantum sensing using graybox machine learning
Akram Youssry, Stefan Todd, Patrick Murton +3 more·Jan 24, 2026
Quantum sensors offer significant advantages over classical devices in spatial resolution and sensitivity, enabling transformative applications across materials science, healthcare, and beyond. Their practical performance, however, is often constrain...
Qhronology: A Python package for studying quantum models of closed timelike curves
Lachlan G. Bishop·Jan 24, 2026
Qhronology is a novel scientific-computing package for studying quantum models of closed timelike curves (CTCs) and simulating general quantum information processing and computation. Written in Python, the program provides a comprehensive framework f...
Non-Markovian Decoherence Times in Finite-Memory Environments
Ramandeep Dewan·Jan 24, 2026
Decoherence is often modeled using Markovian master equations that predict exponential suppression of coherence and are frequently used as effective bounds on quantum behavior in complex environments. Such descriptions, however, correspond to the sin...
The Universe as a Detector: A Quantum Filtering Formulation of the Diósi-Penrose Model
John Gough, Dylon Rees·Jan 24, 2026
We consider the Diósi-Penrose problem but rather than postulating background gravitational fluctuations, we instead consider the quantum filter that arises from space-time homodyning the continuum of output quadrature described in the open quantum st...
Entropic Efficiency of Bayesian Inference Protocols
Nathan Shettell, Alexia Auffèves·Jan 24, 2026
Inference is a versatile tool that underlies scientific discovery, machine learning, and everyday decision-making: it describes how an agent updates a probability distribution as partial information is acquired from multiple measurements, reducing ig...
A pedagogical derivation of the first-order effective Hamiltonian for the two-mode Jaynes-Cummings model
Alejandro R. Urzúa·Jan 23, 2026
This work presents a pedagogical and self-contained derivation of the first-order effective Hamiltonian for the two-mode Jaynes-Cummings model in the dispersive regime. A perturbative unitary transformation removes nonresonant atom-field terms, revea...
Highly accurate semiclassical strong-field Herman-Kluk propagator method for high-harmonic generation
Phi-Hung Tran, Hao Quan Truong, R. Esteban Goetz +1 more·Jan 23, 2026
We extend our recently developed semiclassical strong-field Herman-Kluk propagator (SFHK) method to calculate high-order harmonic generation (HHG) for atoms in intense lasers. We show that our method, based on a combination of the Herman-Kluk propaga...