Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Photoelectrical readout and Ramsey interferometry of single shallowly implanted NV centers in diamond
Ilia Chuprina, Christoph Findler, Johannes Lang +2 more·Jul 17, 2026
Photoelectrical readout of the electronic spin state of the nitrogen-vacancy (NV) center in diamond is attracting significant interest due to the numerous advantages it possesses compared with conventional fluorescence readout. The higher charge carr...
Maximal quantum leakage: operational interpretation and quantum channel analysis
Shuixin Xiao, Zijia Zhao, Jingge Zhu +1 more·Jul 17, 2026
Maximal quantum leakage quantifies privacy against adversaries with arbitrary intentions. In this work, we prove that computing this leakage is equivalent to minimum-error quantum state discrimination with equal priors. This establishes a computable ...
The Fourier Wall: Why Public Tabular Datasets Refuse Quantum Advantage, and a Certified Recipe for Where It Lives
Javier Mancilla, Tomás Tagliani·Jul 17, 2026
Across public tabular benchmarks, quantum machine-learning (QML) models usually lose to carefully tuned classical baselines. We argue that this is a structural property of the datasets rather than merely a limitation of current models. Because an ang...
Fermion parity of an Andreev molecule probed by nonlocal Josephson effect
S. Annabi, H. Riechert, K. Watanabe +5 more·Jul 17, 2026
Fermion parity is a fundamental property of superconducting many-body states. Here, we show that the global fermion parity of a delocalized superconducting state can be detected locally by exploiting the nonlocal Josephson effect. Using a carbon nano...
AgentFAIR: A Multi-Agent Collaborative Framework for FAIRness Evaluation of Geospatial Datasets
Ming Chen, Pranav Pai·Jul 17, 2026
Geospatial datasets support applications from urban planning to climate modeling, yet consistent assessment of FAIR compliance is difficult. Existing evaluators use different rubrics and evidence sources and may fail on JavaScript-rendered pages or r...
Manipulating non-intrinsic outputs of a non-Hermitian coupled system by weak external driving
He Feng, Yi-Fan Xiang, Wei Li +1 more·Jul 17, 2026
Measurement provides access to exploring and understanding nature and finds widespread applications. It is generally believed that the weak external driving used in measurement introduces negligible disturbance to the intrinsic output of the probed s...
Controlling charge and spin currents through nonreciprocal dissipative processes
Catalin-Mihai Halati, Jean-Sébastien Bernier·Jul 17, 2026
We investigate the generation and control of both charge and spin currents via nonreciprocal dissipative mechanisms in a two-dimensional spinful fermionic atom quantum system with broken inversion and time-reversal symmetries. Within the Gorini-Kossa...
Three-dimensional three-photon Stark spectroscopy of a single Rb Rydberg atom in an ultrahigh-vacuum glass cell with eight electrodes
S. A. Spirin, E. A. Yakshina, A. K. Sologub +9 more·Jul 17, 2026
Quantum computing and quantum simulation with ultracold neutral atoms require Rydberg excitation of individual atoms in atomic arrays. Rydberg states are extremely sensitive to external electric fields, therefore precise three-dimensional control of ...
Einstein crystals in Snyder and Snyder-de Sitter noncommutative backgrounds
Anna Pachoł, Aneta Wojnar·Jul 17, 2026
We investigate the behavior of Einstein crystals in noncommutative backgrounds described by the Snyder and Snyder-de Sitter models. Possible novel effects, which may arise in realistic systems such as diamond crystals, are analyzed within a thermodyn...
Grover's algorithm for image edge detection
Pulak Ranjan Giri, Kazuhiro Saito·Jul 17, 2026
Grover's algorithm is one of the most significant quantum algorithms, enabling the search for a marked element in an unsorted database quadratically faster than classical search algorithms. We utilize Groves's algorithm to detect the edges of a digit...
Non-Gaussianity in cat codes: global incompatibility and local geometric alignment with the magic resource
Yuwei Zhu, Seungbeom Chin, William J. Munro +1 more·Jul 17, 2026
Non-Gaussianity is an essential resource for genuine quantum advantages in continuous-variable quantum systems and is regarded as a counterpart of the magic resource in discrete-variable systems. Recently, an exact correspondence between non-Gaussian...
Growth of quartet correlations in neutron-rich Tellurium isotopes within quartet Bardeen-Cooper-Schrieffer theory
Yixin Guo, Hiroyuki Sagawa, Masaaki Kimura·Jul 17, 2026
Quartet correlations in neutron-rich Te isotopes are investigated within the quartet Bardeen-Cooper-Schrieffer (BCS) framework. Taking $^{100}$Sn as an inert core, we consider two valence protons and valence neutrons occupying the $2d_{5/2} \oplus 1g...
Boundary-Phase Control of Sequentially Addressed Trapped-Ion ZZ Interactions
Chun-Yang Luan, Haiyu Ding, Cheng-Kang Pan +8 more·Jul 17, 2026
Motion-mediated trapped-ion interactions commonly coordinate state-dependent forces on both target ions. Sequential optical access reduces the number of concurrent target channels but makes the relative phase between disjoint force windows a control ...
Strong intervalley mixing between copropagating quantum Hall edge channels in a silicon MOSFET
Gento Yamahata, Takase Shimizu·Jul 17, 2026
Copropagating quantum Hall edge channels provide a promising platform for compact electron interferometry and flying quantum states. In silicon, the valley degree of freedom offers a natural alternative to spin-resolved edge channels because spin-fli...
Spectral Attack on Continuous-Variable Quantum Key Distribution Systems
Chen Gong, Mingxuan Guo, Peng Huang +2 more·Jul 17, 2026
Continuous-variable quantum key distribution (CVQKD) has attracted extensive attention due to its compatibility and low costs. However, bandwidth mismatch exists to varying degrees between the transmitter and receiver. This may prevent frequency comp...
Fate of dynamical quantum phase transitions from sudden quench to slow quench limit
Xiang Zhang, Fuxiang Li·Jul 17, 2026
Previous investigations of dynamical quantum phase transition (DQPT) have predominantly focused on sudden quench protocols. In this work, we systematically explore the fate of DQPT from the sudden to the slow quench regime. We establish that DQPT rem...
Classical codes violate the conjectured square-root bound for quantum random access codes
Kangqiao Liu·Jul 17, 2026
We consider whether every quantum random access code (QRAC) with density-operator encodings and arbitrary decoding measurements obeys the conjectured bound $p\leq(1+\sqrt{m/n})/2$, where $n$ classical bits are encoded into $m$ qubits and $p$ is the w...
Enhanced Rydberg-Atom Superheterodyne Detection of Hidden-Photon Dark Matter on Chips
Xiaochen Li, Bo Gao, Shigeki Matsumoto +3 more·Jul 17, 2026
Although hidden-photon dark matter with masses above $10^{-4}\,\mathrm{eV}$ is well motivated by inflationary production, it remains largely unexplored by terrestrial experiments. Through kinetic mixing, hidden photons induce a weak oscillating elect...
Deterministic atom-shuttle interconnects via ultrafast atom-ion entangling gate
Mu Qiao·Jul 17, 2026
Neutral-atom arrays and trapped-ion crystals offer complementary strengths for fault-tolerant quantum computing but lack a fast way to deterministically interact. Here we propose a controlled-$Z$ gate generated by the charge-induced-dipole ($C_4$) fo...
Agnostic learning of qudit stabilizer states
Wentao Qi, Boyan Xu, Shiguang Feng +1 more·Jul 17, 2026
Learning a classical description of a quantum state is a fundamental task in quantum computation. Among the most important classes of quantum states are stabilizer states, which play a central role in quantum error correction and fault-tolerant compu...