Quantum Physics · Physics & Astronomy
Quantum Physics
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3,630 papers, from 4 September 2026 to 5 November 2026: 3,630 arXiv preprints.
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Newest papers, page 121
A Complete Proof of $\mathsf{QMA}_1$-Hardness for Weighted Gapped Clique Homology
The computational complexity of simplicial homology has been studied since the question was raised by Kaibel and Pfetsch, and clique homology was later shown to be $\mathsf{QMA}_1$-hard by Crichigno…Lifting Multiplicity in Randomized Benchmarking
Randomized benchmarking comprises a suite of standard techniques for assessing the operational fidelity of quantum processors.Constant-Rate Certified Deletion
We present a unified framework for upgrading a broad class of cryptographic primitives to support constant-rate certified deletion.Quantum Fire with Delegated Cloning
Quantum fire is a recently introduced cryptographic primitive consisting of efficiently preparable quantum states, called \emph{flames}, that admit efficient cloning but resist efficient…Fault-tolerant and fully addressable unitary logical gates via round-robin sparsification
For quantum low-density parity check (qLDPC) codes, the ability to manipulate individual logical units of information, i.e. the use of addressable gates, enables maximal utility of their efficient…The exact LCU sampling overhead of collective diagonal unitaries: resonances and a continued-fraction dichotomy
The minimal sampling overhead of the quadratic collective phase $e^{-iγK^2}$ over one layer of single-qubit rotations is decided by the continued fraction of $γ/π$.Efficient fidelity simulation of high-rate magic distillation circuits
Non-Clifford gates are essential for avoiding classical simulability under the Gottesman-Knill theorem.The QICK Box: A Modular RF Front-End System for Quantum Control and Readout
The QICK (Quantum Instrumentation Control Kit), first introduced in 2022, is a standalone open source control system for quantum information science.Decohering Kitaev's Sixteenfold Way: A Holographic Approach
We study anyon decoherence in 2D topological order, with the fermion decoherence in Kitaev's sixteenfold way as explicit examples.Symmetry-preserving quantum compilation
Fault-tolerant quantum simulation requires compiling symmetry-preserving time evolutions into discrete gate sets.Discriminating Lindbladian Dynamics
The fundamental task of quantum hypothesis testing, which consists in discriminating quantum objects, has been extensively studied for quantum states and channels.Entanglement of purification for Werner states: canonical purification and nonadditivity
We prove that the von Neumann entanglement of purification is nonadditive.Polynomial-Time Algorithms for Nuclear Tensor Norms and Multipartite Separability
We study a multilinear optimization problem for tensors with bounded Frobenius norm, where each of the $k$ local factors of dimension $d$ is chosen from a convex set.Clarifications on the Experimental Status of Real Quantum Theory
In our previous paper on the matter, we proved that real quantum theory (RQT) cannot be experimentally falsified without the experiment falsifying quantum theory (QT) as well.Exponential quantum space advantage in random data streams
We show two unconditional quantum space advantages in the random-order streaming model.Reaching the Limits of Ground-State Metrology with Many-Body Probes
We investigate the physical requirements to reach the ultimate limits of ground-state metrology -- i.e., the estimation of an unknown parameter $θ$ of an $N$-body Hamiltonian via measurements on its…A Basis-Aware Approach to Quantum Sampling of the Fermi-Hubbard Ladder
Sample-based quantum diagonalization can reduce the classical cost of many-body calculations by restricting diagonalization to configurations identified through quantum sampling, but its efficiency…Breaking the cubic barrier for the inverse-free Solovay-Kitaev algorithm
The Solovay-Kitaev algorithm states that it is possible to efficiently compile unitaries to accuracy $ε$ in $\text{polylog}(1/ε)$ time using any universal gate set.Super-Exponential Advantage of Squeezed Light in Phase Estimation under Discrete Phase Randomisation
A paradigmatic task in quantum metrology is that of phase estimation.A note on tomography of states with low stabilizer rank
In this note, we consider tomography of $n$-qubit quantum states $|ψ\rangle$ that are promised to have stabilizer rank $k$ i.e., admit a stabilizer decomposition of $|ψ\rangle = \sum_{i=1}^k c_i…