Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
On chip, multifunctional quantum sensing using single spins in a van der Waals crystal
James Liddle-Wesolowski, Konosuke Shimazaki, Jiyun Kim +5 more·Jun 18, 2026
Nanoscale thermometry and magnetometry are in high demand across a wide range of scientific and technological applications. In this context, optically addressable spins in solids have emerged at the forefront of on-chip quantum sensing. However, simu...
Majorana bound states in a hybrid Kitaev ladder with long-range pairing
Rajiv Kumar, Tapan Mishra, Levan Chotorlishvili +1 more·Jun 18, 2026
We investigate an inter-leg coupled hybrid Kitaev ladder composed of two parallel superconducting chains with distinct pairing interactions. The upper chain of the ladder hosts conventional $p$-wave pairing, while the lower chain exhibits long-range ...
Strain- and Electric-Field-Tunable Valley Polarization in Mo0.75V0.25Te2(Mo3VTe8) for Valleytronic Application
Md. Mostaqul Islam, Vivek Chowdhury, Md. Nure-Alam-Dipu +1 more·Jun 18, 2026
Valley polarization in 2D TMDs is promising for low-power valleytronic and spin-valley information processing, but time-reversal symmetry in pristine nonmagnetic TMDs keeps the K+ and K- valleys degenerate, limiting device applications. In this work,...
QMaxCal: Path-Space Regularization for Open Quantum Control via Girsanov's Theorem
Merijn Moody, Zier Mensch, Miranda C. N. Cheng +2 more·Jun 18, 2026
Reliable quantum control in the presence of decoherence requires policies that combat the effect of environmental noise on the controlled dynamics. Open quantum systems under continuous monitoring generate classical measurement records whose drift de...
Purity and bound energy in ancilla-assisted work extraction
B. Vigneshwar, Farhaan Khan, R. Sankaranarayanan·Jun 18, 2026
We investigate ancilla-assisted work extraction in quantum batteries from the perspective of bound energy and purity. We show that the bound energy of the reduced system provides a tight upper bound to the daemonic gain and that this bound is saturat...
A Novel FeFET Differential Bit-Cell With Hybrid Volatile and Non-Volatile Memory Modes
Jianze Wang, Wei Zhang, Xuanyao Fong·Jun 18, 2026
Non-volatile SRAM (nvSRAM) designs have been investigated to address the high leakage power of CMOS-based SRAM and the large write latency of emerging non-volatile memory (eNVM) technologies. However, prior nvSRAM designs that combine SRAM with eNVM ...
Random Local Stabilizer Codes in Three Dimensions without String or Self-Similar Fractal Logical Operators
Han Yan·Jun 18, 2026
Quantum error-correcting codes (QECs) are essential components quantum computation and have deep connections to quantum phases of matter. A key obstruction to passive self-correcting QECs is the presence of string logical operators, which can generat...
QMCtwin: Master-Equation Simulation of Syndrome Statistics Beyond Pauli Noise
Tong Shen, Huo Chen, Benchen Huang +4 more·Jun 18, 2026
As quantum error correction moves toward large-scale experimental implementations, decoder performance increasingly depends on how faithfully hardware noise is translated into syndrome statistics. Standard stabilizer workflows achieve scalability by ...
Robust Generation of Topological Biphoton Mode via Adiabatic Passage
Jaesung Lim, Jihwan Kim, Dong-Gil Im +4 more·Jun 18, 2026
Topological waveguide arrays support robust mode propagation in the presence of fabrication imperfections, providing a significant advantage for on-chip quantum information processing. However, this robustness does not fully extend to nonlinear bipho...
Sparse positive maps on qutrits with exact nondecomposability thresholds and PPT-entanglement transitions
Davide Poderini, Angela Rosy Morgillo, Fabio Benatti +3 more·Jun 18, 2026
We study a family of sparse positive maps on qutrits for which positivity, decomposability, and PPT entanglement can all be analysed explicitly. The block structure of the associated Choi matrices reduces positivity to a Hermitian biquadratic form an...
Variational Polaron Theory for Ground States of Strongly Coupled Light-Matter and Electron-Phonon Systems
Nguyen Thanh Phuc·Jun 18, 2026
Strong light-matter and electron-phonon coupling generate ground states dressed by virtual bosonic excitations, making bare-state truncations and perturbative treatments unreliable in the ultrastrong-coupling regime. We introduce a nonperturbative va...
Quantum models with the Yang-Lee phase transition
Erick Arguello Cruz, Grigory Tarnopolsky·Jun 18, 2026
In this article, we present four different $1+1$D quantum models that realize the Yang-Lee (YL) phase transition under a deformation that preserves $PT$ symmetry. These are the antiferromagnetic Ising spin chain in transverse and longitudinal magneti...
Topological Quantum Interferometry
Tianyou Ying, Yufeng Zhou, Chengwei Pan +5 more·Jun 18, 2026
Structured light provides high-dimensional Hilbert spaces holding tremendous potential for fundamental quantum optics and quantum technologies. However, existing characterization methods, like Hong-Ou-Mandel (HOM) interference, typically assume perfe...
Operational Tube-Sector Theory of Quantum State Distinguishability Under Generalized Symmetries
Song He·Jun 18, 2026
A variational principle for quantum-state distinguishability is established in many-body systems with generalized symmetries, including noninvertible cases described by fusion categories. Standard fidelity and symmetry-resolved diagnostics emerge as ...
Design Considerations for Phase Modulation in Testable Photonic Systems and Co-packaged Optics
Pratishtha Agnihotri, Priyank Kalla, Steve Blair·Jun 18, 2026
As silicon photonic integrated circuits (PICs) scale in complexity, testing and calibration increasingly depend on effective phase modulation mechanisms. This work compares thermally induced phase modulation and carrier-based electrical modulation in...
Quantum Dynamics from Lax Pair Theory: A Reconstruction from Spectrum Preservation
Péter Szabó·Jun 18, 2026
We reconstruct unitary quantum dynamics from a minimal axiomatic foundation built on Hilbert-space observables and isospectral evolution. The only dynamical assumption is that physical time evolution is a continuous one-parameter flow of Hermitian ob...
$K$-Theoretic Obstructions to Linearizing QCA Representations
Mattie Ji, Bowen Yang·Jun 17, 2026
Projective representations arise naturally in physics and representation theory, and determining whether they can be linearized has been a fundamental problem. In this work, we study the analogous problem for quantum cellular automata (QCA) represent...
Optimized Quantum States for Sensing in the Presence of Loss and Phase Noise
Shruti Maliakal, Zachary Mann, Christopher Wipf +3 more·Jun 17, 2026
Squeezed vacuum lets gravitational-wave detectors and other quantum sensors surpass the standard quantum limit, and is optimal in the loss-limited regime; phase noise breaks this optimality. Numerically optimizing the quantum Fisher information acros...
Subsystem Quantum Error Correction for Noisy Quantum Metrology
Qiushi Liu, Sisi Zhou·Jun 17, 2026
Quantum error correction has been successfully applied to enhance the precision of parameter estimation in the presence of noise. Nonetheless, existing methods require a number of noiseless, controllable ancillae and lack efficient encoding and decod...
String dynamics of a (2+1)D U(1) quantum link model on a digital quantum computer
Anthony Gandon, Alessandro Mariani, Debasish Banerjee +5 more·Jun 17, 2026
The (2+1)D U(1) pure gauge theory always exists in the confining phase, with strings of non-zero string tension giving a characteristic linear potential between static charges. This makes it a useful testing ground for quantum computing methods desig...