Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
33,672
This Month
0
Today
0
Research Volume
16,654 papers in 12 months (-29% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Non-Local Magic from the Entanglement Spectrum
Gianpaolo Torre, Fabio Franchini, Salvatore Marco Giampaolo·Jul 8, 2026
Non-local magic has recently emerged as a fundamental resource for characterizing genuinely non-local non-stabilizer correlations. However, its direct calculation is an intractable numerical problem, except for small systems, and its understanding re...
Robust Ion-Photon Entanglement via Polarization-to-Time-Bin Conversion
Ana Luiza Ferrari, Denton Wu, Mika A. Zalewski +1 more·Jul 8, 2026
Time-bin photonic qubits are well-suited for quantum network applications due to their robustness to polarization instability in fiber links and potential for heterogeneous networks. In this work, we implement the first entanglement-preserving polari...
Shortcuts to Adiabaticity for non-Hermitian systems in Krylov Space
Ankit W. Shrestha, Budhaditya Bhattacharjee, Adolfo del Campo·Jul 8, 2026
Shortcuts to adiabaticity (STA) reproduce adiabatic dynamics in finite time, but their counterdiabatic implementation relies on the adiabatic gauge potential (AGP), which is difficult to compute and implement in many-body systems and whose extension ...
Topology from Decoherence
Alexandre Chaduteau, Derek Lee, Frank Schindler +1 more·Jul 8, 2026
Decoherence is conventionally regarded as an obstacle to realizing topological quantum phases. This has motivated extensive efforts to suppress noise in candidate topological materials and devices. Here, we show that decoherence can instead induce to...
No off-diagonal quantum focusing for Rényi divergences
Tanay Kibe, Pratik Roy·Jul 8, 2026
The quantum focusing conjecture is a mathematical expression of the idea that semiclassical gravity remains universally attractive. Its off-diagonal part is a monotonicity condition on the double null shape variation of relative entropy on distinct n...
Observation of coherent flux-charge interaction in a gate-tunable fluxonium
Brian D. Isakov, Shikhar Singh, Adrian Parra-Rodriguez +7 more·Jul 8, 2026
Interactions that mix conjugate variables, such as the flux through a circuit element and the charge across it, lie outside the reach of the elementary couplings of superconducting circuits. Capacitors connect charge to charge, and inductors connect ...
Multi-channel collective dissipation via the symmetric irreducible representation of SU(4)
M. Lutsukh, M. Bazarsana, T. Begzjav +1 more·Jul 8, 2026
We specialize Agarwal's multi-level collective spontaneous-emission formalism to the four-level case by formulating it in the fully symmetric \SU(4) representation of $N$ identical atoms. In the irreducible representation $(N,0,0)$, the occupation-nu...
Error bounds for the truncated Baker--Campbell--Hausdorff and Zassenhaus formulas in unitary problems
A. Arnal, F. Casas, J. L. Ruiz-Benito·Jul 8, 2026
The Baker--Campbell--Hausdorff (BCH) formula plays a critical role in many branches of mathematics and physics. It expresses the logarithm of the product of exponentials of non-commuting operators as an infinite series of nested commutators of the op...
Faster quantum linear system solver beyond the condition number
Alexander M. Dalzell, Jianqiang Li, Yuan Su·Jul 8, 2026
The spectral condition number is a widely adopted measure of worst-case cost for quantum linear system solvers. Yet it can significantly overestimate the actual runtime for a typical problem instance. We present two quantum algorithms that produce th...
Acoustic-phonon-driven spin-lattice relaxation of the hBN boron vacancy in the sub-THz regime
Priyo Adhikary, Pramey Upadhyaya·Jul 8, 2026
The negatively charged boron vacancy center in hexagonal boron nitride is a premier candidate for quantum sensing, yet its performance is critically limited by longitudinal spin-lattice relaxation time ($T_1$). A microscopic understanding of spin rel...
QCNN with Rough Path Signature Kernels
Leonardo Nogueira Falabella, Vasily Sazonov·Jul 8, 2026
Time series analysis plays a vital role across a wide range of scientific and engineering domains but poses substantial computational challenges. A major difficulty arises from the time reparameterization invariance of time series data, which complic...
Analysis of polarization drift of optical signals over deployed aerial-inground fiber connections
Aneesh Ramaswamy, Nageswara S. V. Rao, Joseph C. Chapman +1 more·Jul 8, 2026
Polarization measurements of a classical 1550-nm signal are collected and analyzed on 15-km hybrid aerial-inground fiber connections over 11 months. The spectral area and spectral moments9 of mHz-resolution Fast-Fourier-Transform (FFT) of these measu...
Multi-stage Quantum Amplifier Readout Chain
Logan Howe, Andrea Giachero, Michael Vissers +5 more·Jul 8, 2026
Multi-stage cryogenic readout chains with a wide bandwidth and added noise within a few quanta of the quantum limit are frequently constructed using traveling-wave parametric amplifiers (TWPAs) as the first stage, and a semiconductor amplifier as the...
Covariant Approximate Quantum Codes for Protected Analog Computation
Mariia Elovenkova, Hong-Ye Hu, Susanne F. Yelin·Jul 8, 2026
Quantum error correction compatible with continuous symmetries is a fundamental problem in quantum information and a possible route to robust analog quantum simulation. Because the Eastin-Knill theorem forbids exact codes with continuous transversal ...
Operational Collapse Region in Repeaterless Loss-Dephasing Quantum Channels
Ufuk Korkmaz, S. Elham Mousavigharalari, Deniz Türkpençe·Jul 8, 2026
The distribution of entangled photon pairs over standard optical fiber is a fundamental requirement for the realization of the quantum internet. However, real-world deployment is severely bottlenecked by the interplay of amplitude damping (photon los...
Quantum Software Engineering in Practice: FPGA and AI Integration for Quantum Certification
Marcos Guillermo Lammers, José Manuel Suárez, Adrián Pousa +2 more·Jul 8, 2026
The emergence of Quantum Software Engineering (QSE) responds to the need for systematic, disciplined, and quantifiable approaches to the development, operation, and maintenance of quantum software. Within this context, quantum computer certification ...
Geometric Interpretation of Sum Photon Blockade
Timur Khudaiberganov·Jul 8, 2026
We present a geometric interpretation of the sum photon blockade effect in multimode quantum optical systems, such as semiconductor microresonators. The blockade condition \(c^{(n)} \cdot v = 0\) reflects the orthogonality of the \(n\)-photon amplitu...
Fidelity Analysis of Adiabatically Driven Donor Spins as Two-Qubit and Ququart Systems
Brian Michon, James Keppens, Ashutosh Kinikar +3 more·Jul 8, 2026
Donor spin systems host a native Hilbert space whose dimension exceeds that of a qubit, meaning they can be used as qudits. Here we study a \ce{Si{:}P} donor spin system through leakage-aware randomized benchmarking (RB) of native ququart $\mathcal{C...
Vacuum polarization and renormalized stress-energy tensor of spherical thin shells
Julio Arrechea, Cormac Breen, Adrian Ottewill +2 more·Jul 8, 2026
We provide a thorough study of the properties of the Boulware vacuum in the spacetime of a spherical, static thin shell with a Minkowski interior. To this end, we calculate the renormalized vacuum polarization and stress-energy tensor of massless sca...
Analysis of the sample complexity for PAC-learning functions defined over quantum states
Jordi Pérez-Guijarro·Jul 8, 2026
A fundamental question in PAC learning is determining the number of labeled examples required to learn a concept class to a desired accuracy and confidence. In classical learning theory, this quantity is characterized by the VC-dimension, while sever...