Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Exact analytical spectrum, eigenstates, and quantum geometry of the quarter-flux Harper-Hofstadter model
Isaac Tesfaye, André Eckardt·Aug 26, 2026
Quantum geometry has emerged as a guiding principle across atomic and condensed-matter physics, shaping the topological responses of Bloch bands and the stability of the correlated phases they host. Beyond two-band models, however, closed-form expres...
Torsion balances as operational probes of semiclassical gravity: Matched-filter bounds, torque-diffusion constraints, and quantum-noise benchmarks
Jyotirmaya Mohanta, Yutaka Shikano·Aug 26, 2026
Calibrated torsion-balance spectra constrain deterministic and stochastic deviations from standard Newtonian gravity. Using one-sided spectra, we derive a calibrated angle-equivalent noise budget and finite-time matched-filter/Cramér-Rao bounds for k...
MyoMechanix: Biomechanically-Grounded Compositional Skilled Activity Understanding and Coaching
Hao Yin, Paritosh Parmar, Lijun Gu +6 more·Aug 26, 2026
Existing action quality assessment (AQA) datasets and methods rely primarily on visual inputs such as RGB and pose, overlooking physiological dynamics such as muscle mechanics and often modeling actions as monolithic patterns. These limitations hinde...
Yang-Lee Criticality as a Dissipative Dynamical Phase Transition: Quantum Simulation of non-Hermitian Physics without Post-selection
Stephen W. Yan·Aug 26, 2026
We show that the $d+0$-dimensional Yang-Lee theory describing classical Ising spins in an imaginary magnetic field can be realized, without post-selection, within a $(d-1)+1$ open quantum system whose dynamics consist of local unitaries and engineere...
Parity Anomaly as Modular Commutator with Massless Dirac Fermion
Meng Zeng·Aug 26, 2026
The modular commutator $J(A,B,C) = i\langle[K_{AB},K_{BC}]\rangle$ extracts the chiral central charge $c_-$ from a single bulk wavefunction of a \emph{gapped} 2d state, where $3J/π=c_-$. Inspired by the recent developments in the field of gapless sym...
Asymptotically optimal purification of noisy unitary channels in any dimension
Ryotaro Niwa, Satoshi Yoshida, Mio Murao·Aug 26, 2026
We consider the problem of noisy unitary purification. Given access to an unknown $d$-dimensional unitary channel followed by depolarizing noise of strength $p$, we aim to construct a superchannel that universally purifies the noisy unitary back to t...
A heterogeneously integrated coupled-cavity frequency beam splitter
Lucas M. Cohen, Manuel H. Muñoz-Arias, Mohan Sarovar +6 more·Aug 26, 2026
Frequency encoded photonic qubits promise a scalable path towards high-dimensional quantum information processing, but require efficient components for coherently mixing frequency modes. Coupled cavity modulators provide this functionality by using o...
Immittance formulas for exact blackbox quantization and divergence-free effective models in circuit QED
Philippe Gigon, Peter Rabl, Adrian Parra-Rodriguez·Aug 26, 2026
Building on the first-order circuit quantization method [arXiv:2304.12252, arXiv:2401.09120], we provide simple formulas to construct exact Hamiltonians for Josephson-junction-based superconducting qudits capacitively, inductively, or galvanically co...
The Gain-Engineered Transmon
Ian Yang, Francesco Adinolfi, Alessandro Bruno +3 more·Aug 26, 2026
The interaction between a qubit and its environment can be engineered such that one error channel dominates over all others, resulting in noise bias. This property enables error correction codes to focus on the dominant error type, thereby significan...
From Round-Trip State Echo to Error Recovery: Snapshot-Resolved Quantum-Hardware Diagnostics
Isaac Barouch Essayag, Aryeh Lev Zabokritskiy·Aug 26, 2026
End-to-end quantum-hardware scores need not transfer across workloads, compilations, or execution times. We specify a compilation-explicit screen-and-stress profile whose opening diagnostic is round-trip state echo (RTSE): prepare one of four tetrahe...
Superadditivity of classical communication over quantum channels via random and deterministic permutations
Benjamin Lovitz, Peixue Wu·Aug 26, 2026
Since Hastings' proof of superadditivity of classical communication over quantum channels, considerable effort has been devoted to finding a structural explanation of this phenomenon that was originally established by concentration of measure for Haa...
Dissipatively Stabilized 0-n Fock Qubits for Noise-Biased Quantum Computing
Su Direkci, Simon Lieu, Kyungjoo Noh +1 more·Aug 26, 2026
Noise-biased qubits have bit-flip errors that are exponentially suppressed relative to phase-flip errors, and offer a promising route toward fault-tolerant quantum computing. However, this bias can be compromised during gate operations with non-biase...
Position- and Momentum-Space Quantum Information Measures of the Double-Morse Oscillator
Firoz Chogle, Ernesto Damiani, Berihu Teklu·Aug 26, 2026
We investigate the quantum-information properties of a particle confined by the double Morse potential in position and momentum spaces. The quasi-exact solvability of the model gives analytical expressions for the first two bound states, allowing the...
Entirely nonlocal quantum magic without entanglement
Fuchuan Wei, Ruixia Wang, Yujia Zhang +4 more·Aug 26, 2026
Nonstabilizerness, or magic, is an archetypal \emph{quantum} resource that is necessary for quantum computational advantage. Here we uncover a phenomenon seemingly at odds with the quantum nature of magic: entirely nonlocal magic (ENM)---magic presen...
Magic of Kitaev spin liquids
Eleonora Lamma, Tim Bauer, Marcello Dalmonte +1 more·Aug 26, 2026
Quantum spin liquids (QSLs) are long-range entangled phases of matter and a natural setting for exploring how quantum correlations generate quantum complexity. Motivated by the emergence of magic, or nonstabilizerness, as a diagnostic of many-body co...
Computing key rates for one-sided device-independent quantum key distribution
Andreas Bluhm, Gereon Koßmann, Martin Sandfuchs +3 more·Aug 26, 2026
The defining feature of one-sided device-independent quantum key distribution is its asymmetric trust model in which only one party is characterized. This scenario sets an interesting middle ground between high key rates achievable by characterizing ...
Switchable heavy-hole/light-hole spin qubit
Zoltán György, Dmitry Miserev, Jelena Klinovaja +1 more·Aug 26, 2026
Compressively strained Ge quantum wells in planar SiGe/Ge heterostructures are the state-of-the-art platform for hole spin qubits. While they exhibit robust coherence times, they possess weak intrinsic spin-orbit interaction (SOI) due to the heavy-ho...
Structured Non-Locality and Emergent Locality in Cavity-QED Many-Body Dynamics
Mark A. Oehlgrien, Błażej Jaworowski, Darrick E. Chang +1 more·Aug 26, 2026
Cavity quantum electrodynamics (QED) modifies many-body systems by combining cavity-mediated collective interactions with microscopic short-range interactions. The resulting dynamics lies between the local and fully collective limits, such that neith...
Distributed Trotterization with optimal time-scaling entanglement cost
Tianfeng Feng, Jinzhao Sun, Yunlong Xiao +1 more·Aug 26, 2026
Distributed architectures extend quantum simulation of many-body dynamics beyond the reach of any single processor, with shared entanglement mediating interactions between spatially separated devices. Conventional implementations rely on quantum tele...
How much randomness in a quantum process can be explained using memory?
Derek D. C. Chang, Graeme D. Berk, Mile Gu·Aug 26, 2026
For a stochastic process describing observations of a dynamical system, complexity science provides systematic methods to decompose the information produced into true irreducible randomness, and that which corresponds to structure superficially disgu...