Papers

Bryan Pan, Yufeng Xin·Jul 5, 2026

The theory of quantum error correction was established decades ago. Yet the limitation of the quantum computing platforms in terms of noise level and available physical qubit count persists, which greatly hinders the development of scalable quantum c...

Christian L. McCoy, Tobias Saule, Mariya Aleksich +5 more·Jul 5, 2026

Artificial atom-like systems are a promising candidate for next generation quantum processing. Among them, dark excitons exhibit one of the longest lifetimes at high temperatures. Here, we demonstrate coherent control of dark excitonic states in meta...

Mingwei Meng, Chen Sun·Jul 5, 2026

In the theoretical study of nonequilibrium non-Hermitian systems, obtaining exact analytical solutions for their nonadiabatic dynamics is highly desirable yet often challenging. In this work, we identify a class of non-Hermitian quantum systems where...

Mohammad Arif Rasyidi, Syahirul Faiz·Jul 5, 2026

Large language models can generate plausible quantum code, but it is unclear whether they can reliably target the specific software development kit (SDK) version requested by the user. We study this problem as API drift and introduce quantum-api-drif...

Ritam Basu·Jul 5, 2026

In spread complexity, the average position of an operator along its Krylov chain, recovers the right radial momentum of an infalling particle in AdS, yet it is a measure of the first moment, irrespective of the spread of the wavepacket away from its ...

Sangchul Oh·Jul 4, 2026

Random circuit sampling of bitstrings from a Haar-random quantum state is widely believed to be classically intractable, and has therefore been implemented as a primary benchmark for demonstrating quantum advantage. Here, we challenge this premise by...

Leonel Bixano, Victor Alberto Cruz-Barriguete, Guillermo López-Alvarez +3 more·Jul 4, 2026

We develop a Lie-Jordan geometric formulation of finite-dimensional open quantum dynamics, building on the algebraic framework introduced in our previous work (arXiv:2606.26477). The Hilbert-Schmidt operator space is endowed with an orthonormal Hermi...

Samuel Buckley-Bonanno, Noah Eckstein, Susanne F. Yelin·Jul 4, 2026

Quantum simulations of gauge theories are typically built on spatial lattices, an approach that has enabled major progress at the cost of requiring fixed background geometries and obscuring the treatment of curved and dynamical spacetimes. Large-$N$ ...

Alexandre C. Orthey, Magdalena Stobińska-Moretto·Jul 4, 2026

Standard device-independent self-testing uses Naimark dilation to assume projective measurements, masking the operational limitations of realistic non-unitary observables. We establish a robust pure self-test for the singlet and Pauli observables tha...

Harel Radia, Tuvia Gefen, Nadav Katz·Jul 4, 2026

Target reflectivity estimation using a two-mode squeezed vacuum (TMSV) probe offers a theoretical advantage over classical schemes, but realizing this potential under the measurement constraints of microwave platforms remains a central challenge. In ...

Cole Comfort, Giovanni de Felice·Jul 4, 2026

Many stabilizer quantum error-correcting codes are built from a finite pattern repeated across space or time, such as lattice codes, translation-invariant graph states, and quantum convolutional codes. Ordinary stabilizer ZX-diagrams capture only fin...

Arnaud Coatanhay, Angelique Dremeau·Jul 4, 2026

Finite-rank non-Gaussian bosonic states admit a holomorphic description in the Bargmann representation: after a zero-free Gaussian factor is separated off, their non-Gaussian structure is encoded by a finite stellar divisor. This article introduces a...

Harold Ollivier·Jul 4, 2026

How can a user with limited quantum resources verify the output of an untrusted, fully quantum server? This manuscript provides a conceptual synthesis of some recent developments toward answering this question under statistical (information-theoretic...

Silvie Illésová, Martin Beseda·Jul 4, 2026

Variational quantum algorithms are hybrid quantum-classical workflows whose results depend on many interacting choices, including the ansatz, Hamiltonian, optimizer, backend, shot count, noise model, mitigation method, random seed, stopping criteria,...

Atta ur Rahman, Muhammad Noman, S. M. Zangi +1 more·Jul 4, 2026

Strong coupling to a reservoir can do more than shift, broaden, or dress the work peaks of a driven quantum system. When the reservoir is infrared singular, a sudden change of a local control parameter can alter the boundary condition seen by infinit...

Minsoo Kim, Changhun Oh, Donghoon Kim·Jul 4, 2026

Disentangling transformations play a central role in the classical simulation of quantum many-body systems, yet their analytic structure and underlying mechanism remain largely unexplored. Here, we study the structure of the disentangler in the Halda...

Udomsilp Pinsook·Jul 4, 2026

We develop a dynamical description of the superconducting pair field in which the Cooper-channel Hubbard--Stratonovich field $Δ$ is treated as a memory-dressed Bogoliubov pair field rather than as a purely static order parameter. Starting from the st...

Emmanuel Giner·Jul 4, 2026

In the first part of this series we have shown how the Schrodinger equation for a single particle and the corresponding non relativistic quantum observables can be obtained from a purely classical phonon model through the Newtonian equations of motio...

Yupan Liu, Qisheng Wang, Zhan Yu·Jul 4, 2026

We investigate the computational complexity of estimating the operator norm distance ${\rm T}_{\infty}(ρ_0,ρ_1)$, defined via the operator norm $\|A\|_{\infty} = σ_{\max}(A)$, given ${\rm poly}(n)$-size state-preparation circuits of $n$-qubit quantum...

Emmanuel Giner·Jul 4, 2026

The Schrodinger equation for a single spinless particle is formally obtained via a classical phonon model, namely the Frenkel-Kontorova model. Starting from a one-dimensional lattice of coupled harmonic oscillators, we show that the continuous limit ...