Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Optimal filtering for a giant cavity in waveguide QED systems
Guangpu Wu, Shibei Xue, Yuting Zhu +2 more·Mar 24, 2026
In waveguide quantum electrodynamics (QED) systems, a giant cavity can be engineered to interact with quantum fields by multiple distant coupling points so that its non-Markovian dynamics are quite different from traditional quantum optical cavity sy...
Deterministic quantum master equation for non-Markovian signal processing
Guilherme de Sousa, Diogo O. Soares-Pinto·Mar 24, 2026
In this work, we derive a deterministic master equation to model a general, possibly non-Markovian, feedback. The master equation describes a system with a general evolution and measurement operation, with feedback being applied in terms of signal pr...
Effect of the Atomic Dipole-Dipole Interaction on the Phase Diagrams of Field-Matter Interactions
S. Cordero, E. Nahmad-Achar, O. Castaños +1 more·Mar 24, 2026
Quantum information measures are used to study the quantum phase diagrams of the two-level Dicke model including the atomic dipole-dipole interaction, for a finite number of particles, with and without the rotating-wave approximation, which yields th...
Magnetic flux distribution, quasiparticle spectroscopy, and quality factors in Nb films for superconducting qubits
Amlan Datta, Bicky S. Moirangthem, K. Joshi +6 more·Mar 24, 2026
Niobium is a practical material platform for superconducting microwave circuits; however, device-level performance can vary significantly depending on film growth and processing conditions. We compare three epitaxial Nb films grown on $c-$plane sapph...
A Zero-Bias Superconducting Voltage Amplifier Based on the Bipolar Thermoelectric Effect
Giacomo Trupiano, G. D. Simoni, F. Giazotto·Mar 24, 2026
We introduce a zero-bias superconducting voltage amplifier that harvests energy from a thermal gradient by exploiting negative differential resistance (NDR) in an asymmetric tunnel junction. The device is based on an asymmetric superconductor-insulat...
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 ...
Development of Biphoton Entangled Light Spectroscopy (BELS) using Bell pairs
V. V. Desai, N. P. Armitage·Mar 23, 2026
We introduce Biphoton Entanglement Light Spectroscopy (BELS), a quantum spectroscopic technique that employs polarization entangled Bell pairs and two photon interference to probe material properties. In BELS, the measured signal arises not from sing...
Distance-Finding Algorithms for Quantum Codes and Circuits
Mark Webster, Abraham Jacob, Oscar Higgott·Mar 23, 2026
The distance of a classical or quantum code is a key figure of merit which reflects its capacity to detect errors. Quantum LDPC code families have considerable promise in reducing the overhead required for fault-tolerant quantum computation, but calc...
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...
Multivariable Painleve'-II equation: connection formulas for asymptotic solutions
N. A. Sinitsyn·Mar 23, 2026
It is shown that a generalization of the Painlevé-II equation (P-II) to a system of coupled equations with symmetry breaking terms is integrable. A Lax pair for this system is used to relate the asymptotic behavior of the solutions at different infin...
Geometric Thermodynamics in Open Quantum Systems: Coherence, Curvature, and Work
Eric R. Bittner·Mar 23, 2026
We formulate a geometric framework for quasistatic thermodynamics in open quantum systems by parameterizing the dynamics on a control manifold. In the quasistatic limit, the system follows a manifold of stationary states, and the work performed over ...
Performance of BB84 without decoy states under varying announcement structures
Zhiyao Wang, Aodhán Corrigan, Norbert Lütkenhaus·Mar 23, 2026
In phase-randomized weak coherent pulse (WCP) implementations of Quantum Key Distribution (QKD) BB84 protocol, the decoy method is often used to compensate BB84's vulnerability against photon number splitting (PNS) attacks. However, this typically in...
Predictive supremacy of informationally-restricted quantum perceptron
Shubhayan Sarkar·Mar 23, 2026
In the current world, the use of artificial intelligence is penetrating every aspect of human life. The basic element of any artificial intelligence is a digital neuron, called a perceptron, while its quantum analogue is called a quantum perceptron. ...
Preparing Fermions via Classical Sampling and Linear Combinations of Unitaries
Erik J. Gustafson, Henry Lamm·Mar 23, 2026
We present an extension of the Evolving density matrices on Qubits (E$ρ$OQ) framework that enables efficient fault-tolerant preparation of fermionic quantum states. The original method circumvents state preparation by stochastic sampling, but faces a...
Dicke materials as a resource for quantum squeezing
Vaibhav Sharma, Shung-An Koh, Jonathan Stepp +8 more·Mar 23, 2026
We study magnetic materials whose low energy physics can be effectively described by a Dicke model, which we term Dicke materials. We show how a Dicke model emerges in such materials due to a coexistence of fast-dispersing and slow-dispersing spins, ...
Casimir Geometry as a Probe of Short Range Forces
Xiaolin Ma, Volodymyr Takhistov, Hideo Iizuka·Mar 23, 2026
Casimir force searches provide among the most sensitive laboratory probes of new short range interactions. Existing constraints rely almost exclusively on a single geometry. We show that Casimir geometry constitutes an independent observable, as Yuka...
Probabilistic modeling over permutations using quantum computers
Vasilis Belis, Giulio Crognaletti, Matteo Argenton +2 more·Mar 23, 2026
Quantum computers provide a super-exponential speedup for performing a Fourier transform over the symmetric group, an ability for which practical use cases have remained elusive so far. In this work, we leverage this ability to unlock spectral method...
Latent Style-based Quantum Wasserstein GAN for Drug Design
Julien Baglio, Yacine Haddad, Richard Polifka·Mar 23, 2026
The development of new drugs is a tedious, time-consuming, and expensive process, for which the average costs are estimated to be up to around $2.5 billion. The first step in this long process is the design of the new drug, for which de novo drug des...
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...