Papers
Live trends in quantum computing research, updated daily from arXiv.
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Non-Hermitian skin effect in periodic, random, and quasiperiodic systems
F. Iwase·Mar 24, 2026
The non-Hermitian skin effect (NHSE), which drives bulk states toward system boundaries, modifies bulk-boundary correspondence and complicates the identification of topological edge modes. Although breaking translational symmetry is known to influenc...
Boundary-sensitive non-Hermiticity of Floquet Hamiltonian: spectral transition and scale-free localization
Bo Li, He-Ran Wang, Fei Song·Mar 24, 2026
We report a novel mechanism of boundary-sensitive PT symmetry breaking in one-dimensional Floquet systems. By designing a time-periodic driving protocol, we realize a Floquet Hamiltonian that is Hermitian under periodic boundary conditions yet acquir...
Pseudospectral phenomena and the origin of the non-Hermitian skin effect
J. Sirker·Mar 23, 2026
The non-Hermitian skin effect (NHSE), characterized by a macroscopic accumulation of eigenstates at the edge of a system with open boundaries, is often ascribed to a non-trivial point-gap topology of the Bloch Hamiltonian. We revisit this connection ...
Stoquastic permutationally invariant Bell operators
Jan Li, Owidiusz Makuta, Evert van Nieuwenburg +1 more·Mar 23, 2026
As Hermitian operators, many-body Bell operators can naturally be identified as many-body Hamiltonians. An important subclass of such Hamiltonians is the stoquastic class, characterized by having nonpositive off-diagonal matrix elements in a given ba...
Boundary Floquet Control of Bulk non-Hermitian Systems
Yu-Min Hu, Yu-Bo Shi, Linhu Li +5 more·Mar 23, 2026
Boundary perturbations are generally irrelevant for bulk properties in the thermodynamic limit, as they are edge-confined and subextensive. We show that this expectation breaks down in boundary-driven systems exhibiting the non-Hermitian skin effect,...
Precision's arrow of time
Luis E. F. Foa Torres, G. Pappas, V. Achilleos +1 more·Mar 23, 2026
The arrow of time is usually attributed to two mechanisms: decoherence through environmental entanglement, and chaos through nonlinear dynamics. Here we demonstrate a third route, Precision-Induced Irreversibility (PIR), requiring neither. No entangl...
Non-Hermiticity induced thermal entanglement phase transition
Bikashkali Midya·Mar 23, 2026
Theoretical analysis of a prototypical two-qubit effective non-Hermitian system characterized by asymmetric Heisenberg $XY$ interactions in the absence of external magnetic fields demonstrates that maximal bipartite entanglement and quantum phase tra...
Emergent thermal fluctuations and non-Hermitian phase transitions in open photon condensates
Moritz Janning, Roman Kramer, Michael Turaev +2 more·Mar 23, 2026
We investigate the nonequilibrium dynamics of an open photon Bose-Einstein condensate in a dye-filled microcavity using a Lindblad master-equation approach, treating the condensate and the noncondensed fluctuations on the same footing. The driven-dis...
A Refined Biorthogonal Framework for Non-Hermitian Quantum Theory and Its Application in Dynamical Phase Transition
Fei Wang, Guoying Liang, Zecheng Zhao +1 more·Mar 22, 2026
The description of states and dynamics in non-Hermitian systems is fundamentally linked to the choice of an appropriate theoretical framework--a point of ongoing debate in the field. This work addresses this issue by proposing a consistent formulatio...
Practical advantage of non-Hermitian enhanced quantum sensing
Kun Yang, Yaoming Chu, Ning Wang +1 more·Mar 21, 2026
Non-Hermitian systems have emerged as a powerful paradigm for ultrasensitive sensing, leveraging unique spectral and dynamical properties that find no counterparts in Hermitian physics. While recent theoretical assessments have established that these...
Non-Hermitian Disordered Systems
Kohei Kawabata, Shinsei Ryu·Mar 20, 2026
Non-Hermitian disordered systems have emerged as a central arena in modern physics, with ramifications spanning condensed matter, quantum, statistical, and high energy contexts. The same principles also underlie phenomena beyond physics, such as netw...
Competing skin effect and quasiperiodic localization in the non-Hermitian Su-Schrieffer-Heeger chain: Reentrant delocalization, spectral topology destruction, and entanglement suppression
Souvik Ghosh·Mar 20, 2026
We investigate the interplay between the non-Hermitian skin effect and Aubry-André-Harper (AAH) quasiperiodic disorder in a one-dimensional Su-Schrieffer-Heeger (SSH) chain with nonreciprocal hopping. By exact diagonalization, transfer-matrix analysi...
Dependence of Lindbladian spectral statistics on the integrability of no-jump Hamiltonians and the recycling terms
Dingzu Wang, Hao Zhu, Guo-Feng Zhang +1 more·Mar 19, 2026
Spectral statistics probe integrability versus chaos and have recently been extended to Markovian open quantum systems described by Lindbladians, whose quantum-trajectory unraveling decomposes the evolution into no-jump dynamics generated by an effec...
Anderson transition in disordered Hatano-Nelson systems
Silvio Barandun·Mar 18, 2026
We illuminate the fundamental mechanism responsible for the transition between the non-Hermitian skin effect and defect-induced Anderson localization in the bulk via the study of Lyapunov exponents. We obtain a proof that the change of the topologica...
Hamiltonian Simulation and Linear Combination of Unitary Decomposition of Structured Matrices
Robin Ollive, Stéphane Louise·Mar 18, 2026
To treat a problem with a Quantum Processing Unit (QPU), it must be transformed into a sequence of quantum operations, or gates: this is the quantum description of the problem. These operations are either packed into a query (i.e. quantum algorithm p...
On global dynamics for damped driven Jaynes-Cummings equations
A. I. Komech, E. A. Kopylova·Mar 18, 2026
The article concerns damped driven Jaynes-Cummings equation which describes quantised one-mode Maxwell field coupled to a two-level molecule. We consider a broad class of damping and pumping which are polynomial in the creation and annihilation opera...
Imaginary Gauge Field and Non-Hermitian Topological Transition Emerging Through Attenuation-Gauge Duality in Conservative Systems
Haoran Nie, Chaoran Jiang, Xiangying Shen +1 more·Mar 18, 2026
Non-Hermitian physics traditionally relies on active gain--loss modulation or non-reciprocal couplings, which often introduce significant complexity, compromise stability, and offer very limited scalability in conservative systems. Here we propose an...
On dynamical semigroup for damped driven Jaynes-Cummings equations
A. I. Komech, E. A. Kopylova·Mar 18, 2026
The article addresses the damped driven Jaynes-Cummings for quantised one-mode Maxwell field coupled to a two-level molecule. We consider a broad class of damping and pumping which are polynomial in the creation and annihilation operators. Our main r...
Anyon-Induced Criticality and Dynamical Stability in Non-Hermitian Many-Body Systems
Yi Qin, Yee Sin Ang, Linhu Li +1 more·Mar 18, 2026
We show that anyonic statistics fundamentally reshapes non-Hermitian many-body physics by intrinsically breaking pseudo-Hermiticity, leading to a unique real-complex spectral transition with characteristically dense states in Im$E$. This anyon-induce...
Stabilizing correlated pair tunneling of spin-orbit-coupled bosons in a non-Hermitian driven double well
Miaoqian Lu, Xinzhou Guan, Mohan Xia +4 more·Mar 18, 2026
We present an analytical framework for stabilizing second-order correlated tunneling of two spin-orbit-coupled bosons in a periodically driven non-Hermitian double-well potential. By combining Floquet theory with multiple-scale asymptotic analysis, w...