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 109
Separating ClonableQMA and QCMA Relative to a Classical Oracle
Since the introduction of the complexity class QMA as a quantum-verifier analogue of NP (Kitaev, 1997), many have wondered whether quantum proofs are necessary or classical proofs suffice - that is…Free entropy and quantum minimum description length
In free probability, Voiculescu's free entropy counts matrix microstates that approximate an operator.Quantum minimum description of density matrices
We study a variant of Schumacher compression.Efficient Logic with Ultra-High-Rate Quantum Codes
Quantum low-density parity-check (qLDPC) codes offer a promising route to reducing the qubit overhead of fault tolerance, with recent ultra-high-rate constructions achieving encoding rates above one…Discovering New Problems for Decoded Quantum Interferometry
Decoded quantum interferometry (DQI) uses classical error correction to solve optimization problems, but it is hard to tell which problems could give it a quantum advantage.Finite-bath projected ensembles in dual-unitary circuits
We study the emergent randomness in projected ensembles generated by dual-unitary circuits.The Grothendieck Game and Self-Testing Continuous Groups
Self-testing certifies quantum states and measurements from observed correlations alone, without requiring a description of the devices that produce them.Nonadditivity in fermionic quantum Shannon theory
We study collective state preparation and channel encoding in fermionic systems under parity superselection and composition governed by the canonical anticommutation relations.A classical oracle separation between QMA and QMA(2)
We exhibit a classical oracle relative to which QMA \neq QMA(2).Hypercontractivity and entropy decay for infinite-dimensional quantum Gibbs samplers
We derive rates of exponential relative-entropy decay for a broad class of infinite-dimensional quantum Gibbs samplers.Fermions and the Tsirelson Problem in Real Quantum Theory
In a previous work, we showed that real quantum theory (RQT) cannot be experimentally distinguished from ordinary quantum theory (QT).Complexity separations for optimal matchgate-Clifford synthesis
Clifford and matchgate circuits are canonical families of classically simulable quantum circuits.Fast convergence of propagation algorithms for open quantum systems
We establish general conditions for the rapid convergence of propagation algorithms for computing expectation values of local observables in quantum many-body systems, covering both spin and…Engineering logical gates with irrep surface codes
Fault-tolerant quantum computation typically relies on a fixed set of logical primitives, while realizing other desired operations can require substantial resources.Informed Trading model with quantum walks
The seminal Kyle model offers a framework to understand the price impact of an informed trader in a market model for a single asset.Pretty good shadow tomography
We give a shadow tomography algorithm that uses $O(\log(m) \log(m/δ) / \varepsilon^2)$ copies of the input state.Quantum-optimized phase closure for robust interferometric imaging
Closure phase enables imaging with ground-based interferometric arrays by canceling telescope-dependent phase errors due to atmospheric fluctuations.Computational entanglement distillation beyond pure states: efficient protocols and fundamental limitations
The information-theoretic approach to entanglement typically relies on arbitrarily many input copies and unboundedly complex operations; however, the available resources are constrained in reality.Characterizing Quantum Advantage for Generalizations of the Boolean Hidden Matching Problem
We study the one-way communication complexity of the $f$-Boolean Hidden Partition problem.Local universality of non-local quantum resources in rotationally invariant scattering
Elastic scattering can generate entanglement and non-local magic between the spins of the two outgoing particles.