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Live trends in quantum computing research, updated daily from arXiv.
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Constrained Shadow Tomography for Molecular Simulation on Quantum Devices
Irma Avdic, Yuchen Wang, Michael Rose +4 more·Nov 12, 2025
Quantum state tomography is a fundamental task in quantum information science, enabling detailed characterization of correlations, entanglement, and electronic structure in quantum systems. However, its exponential measurement and computational deman...
Geometry Induced Chiral Transport and Entanglement in $AdS_2$ Background
Kazuki Ikeda, Yaron Oz·Nov 12, 2025
We study the real-time chiral dynamics of Dirac fermions in AdS$_2$ and AdS$_2$ black hole backgrounds. The spacetime curvature generates a spin connection term, acting as an effective magnetic field and a position-dependent chiral chemical potential...
Liquid metal printing for superconducting circuits
Alexander Kreiner, Navid Hussain, Ritika Dhundhwal +10 more·Nov 12, 2025
Superconducting circuits are a promising platform for implementing fault-tolerant quantum computers, quantum limited amplifiers, ultra-low power superconducting electronics, and sensors with ultimate sensitivity. Typically, circuit fabrication is rea...
Two-Mode Janus States: non-Gaussian generalizations of thermofield double
Arash Azizi·Nov 12, 2025
We introduce the Two-Mode Janus State (TMJS), a non-Gaussian quantum state defined as a coherent superposition of two distinct Two-Mode Squeezed States (TMSS). This construction serves as a direct, non-Gaussian generalization of the canonical thermof...
Trotterized Variational Quantum Control for Spin-Chain State Transfer
Nahid Binandeh Dehaghani, Rafal Wisniewski, A. Pedro Aguiar·Nov 12, 2025
We present a hybrid variational framework for quantum optimal control aimed at high-fidelity state transfer in spin chains. The system dynamics are discretized and compiled into a parameterized circuit, where deterministic two-qubit blocks implement ...
Cyclic Hypergraph Product Code
Arda Aydin, Nicolas Delfosse, Edwin Tham·Nov 12, 2025
Hypergraph product (HGP) codes are one of the most popular family of quantum low-density parity-check (LDPC) codes. Circuit-level simulations show that they can achieve the same logical error rate as surface codes with a reduced qubit overhead. They ...
Probing Topological Stability with Nonlocal Quantum Geometric Markers
Quentin Marsal, Hui Liu, Emil J. Bergholtz +1 more·Nov 12, 2025
Spatially resolved local quantum geometric markers play a crucial role in the diagnosis of topological phases without long-range translational symmetry, including amorphous systems. Here, we focus on the nonlocality of such markers. We demonstrate th...
Optimal Interpolation of Entanglement Purification Protocols
Matthew Barber, Stefano Pirandola·Nov 12, 2025
Bipartite entanglement purification is the conversion of copies of weakly entangled pairs shared between two separated parties into a smaller number of strongly entangled shared pairs using only local operations and classical communication. Choosing ...
Non-abelian Geometric Quantum Energy Pump
Yang Peng·Nov 12, 2025
We introduce a non-abelian geometric quantum energy pump realized by a transitionless geometric quantum drive--a time-dependent Hamiltonian supplemented by a counterdiabatic term generated by a prescribed trajectory on a smooth control manifold--that...
Green Function Invariants for Floquet Topological Superconductivity Induced by Proximity Effects
Mohamed Assili, Panagiotis Kotetes·Nov 12, 2025
We bring forward a Green function approach for the prediction of Floquet topological phases in driven superconductor-semiconductor hybrids. Although it is common to treat the superconducting component as a mere Cooper-pair reservoir, it was recently ...
A measurement-driven quantum algorithm for SAT: Performance guarantees via spectral gaps and measurement parallelization
Franz J. Schreiber, Maximilian J. Kramer, Alexander Nietner +1 more·Nov 12, 2025
The Boolean satisfiability problem (SAT) is of central importance in both theory and practice. Yet, most provable guarantees for quantum algorithms rely exclusively on Grover-type methods that cap the possible advantage at only quadratic speed-ups, m...
Nonequilibrium Probes of Quantum Geometry in Gapless Systems
Bastien Lapierre, Per Moosavi, Blagoje Oblak·Nov 12, 2025
Much of our understanding of gapless quantum matter stems from low-energy descriptions using conformal field theory. This is especially true in 1+1 dimensions, where such theories have an infinite-dimensional parameter space induced by their conforma...
Temporal quantum interference in many-body programmable atom arrays
Madhumita Sarkar, Ben Zindorf, Bhaskar Mukherjee +2 more·Nov 12, 2025
Quantum superposition famously manifests as spatial interference, epitomized by the double-slit experiment. Its less explored temporal analogue, Stückelberg interference, arises in driven systems where phases accumulated along distinct time-domain pa...
Mutual information as a measure of renormalizability
Brenden Bowen, Albert Farah, Spasen Chaykov +1 more·Nov 12, 2025
Renormalization is an essential technique in field-theoretic descriptions of natural phenomena, where the absence of a UV-complete description yields an abundance of divergent quantities. While the renormalization prescription has been thoroughly ref...
Superdiffusive transport protected by topology and symmetry in all dimensions
Shaofeng Huang, Yu-Peng Wang, Jie Ren +1 more·Nov 12, 2025
Superdiffusion is an anomalous transport behavior. Recently, a new mechanism, termed the ``nodal mechanism," has been proposed to induce superdiffusion in quantum models. However, existing realizations of the nodal mechanism have so far been proposed...
Cooling the Sachdev-Ye-Kitaev model using thermofield double states
Thomas Schuster, Bryce Kobrin, Vincent P. Su +2 more·Nov 12, 2025
We analyze a simple and efficient experimental protocol to cool the Sachdev-Ye-Kitaev (SYK) model to low temperatures. The protocol utilizes local couplings between two copies of an SYK model to create a gapped adiabatic path, between a high temperat...
Separating QMA from QCMA with a classical oracle
John Bostanci, Jonas Haferkamp, Chinmay Nirkhe +1 more·Nov 12, 2025
We construct a classical oracle proving that, in a relativized setting, the set of languages decidable by an efficient quantum verifier with a quantum witness (QMA) is strictly bigger than those decidable with access only to a classical witness (QCMA...
Generalized classical and quantum Zernike Hamiltonians
Francisco J. Herranz, Alfonso Blasco, Rutwig Campoamor-Stursberg +3 more·Nov 12, 2025
A superintegrable generalization of the classical and quantum Zernike systems is reviewed. The corresponding Hamiltonians are endowed with higher-order integrals and can be interpreted as higher-order superintegrable perturbations of the 2D spherical...
Topological Quantum Compilation Using Mixed-Integer Programming
Pavel Rytir, Phillip C. Burke, Christos Aravanis +2 more·Nov 12, 2025
We introduce the Mixed-Integer Quadratically Constrained Quadratic Programming framework for the quantum compilation problem and apply it in the context of topological quantum computing. In this setting, quantum gates are realized by sequences of ele...
Entanglement and Its Verification: A Tutorial on Classical and Quantum Correlations
Enno Giese·Nov 12, 2025
Entanglement, a defining property of quantum mechanics in which two physical subsystems cannot be seen as independent entities, challenges our everyday experience and classical intuition. However, only such strong quantum correlations enable quantum ...