1134 papers
This paper establishes that the Petz and Schumacher-Westmoreland recovery schemes achieve the true optimal threshold for quantum error correction and introduces the mutual trace distance as a necessary and sufficient diagnostic to determine this threshold without explicit optimization.
This paper presents a method using Rydberg atom processors and sample-based quantum diagonalization to calculate the ground state energy of the Fermi-Hubbard model for large U by sampling the Heisenberg model, demonstrating superior convergence and efficiency over random sampling on up to 56 qubits while analyzing the potential for studying emergent superconductivity.
This paper demonstrates a programmable high-dimensional temporal mode processor using a Raman quantum memory in warm cesium vapor, which enables on-demand storage, filtering, and conversion of orthogonal temporal waveforms to serve as a coherent interface between MHz- and GHz-bandwidth modes for scalable quantum networks.
This paper identifies and exploits a novel radio-frequency side-channel attack on trapped-ion quantum computers by detecting leaked signals from acousto-optical modulators to extract proprietary gate characteristics, while also proposing mitigation strategies.
This paper presents a formalism for semiclassical time evolution in quantum mechanics that utilizes various complex and real saddle points to accurately reproduce known results and analyze metastable state decay, with the ultimate goal of developing methods to compute decay rates in time-dependent quantum field theories.
Zurek and Page investigate thermodynamic equilibrium of a self-gravitating perfect fluid surrounding a black hole using the Tolman-Oppenheimer-Volkoff equation, discovering a singular solution where the fluid forms a high-density "firewall" near the Schwarzschild radius surrounding a negative point mass rather than a horizon, with entropy comparable to the Bekenstein-Hawking limit.
The authors propose two criteria demonstrating that achieving practical quantum advantage in chemistry calculations is unlikely with current technologies, as VQE algorithms require fault-tolerant hardware due to decoherence sensitivity while QPE algorithms suffer from exponentially suppressed success probabilities due to the orthogonality catastrophe.
This paper presents the first comprehensive experimental and theoretical analysis of both first- and second-order dissipative phase transitions in a two-photon driven Kerr superconducting resonator, characterizing critical dynamics such as hysteresis and symmetry breaking to validate Liouvillian spectral theory for engineering criticality in quantum information applications.
This review surveys universality in driven open quantum matter, employing a Lindblad-Keldysh field theory framework to discuss principles distinguishing equilibrium from nonequilibrium stationary states and categorizing universal phenomena into paradigmatic nonequilibrium realizations, novel nonequilibrium universality, and genuinely quantum nonequilibrium effects.
This paper establishes the average-case #P-hardness of estimating output probabilities for shallow-depth Boson Sampling in logarithmic-depth regimes, extending these results to Gaussian Boson Sampling and lossy environments to provide a theoretical foundation for noise-tolerant quantum computational advantage.
This paper presents two explicit quantum circuit decoders—the generalized Yoshida-Kitaev decoder and a Petz-like decoder—that utilize fixed-point amplitude amplification based on quantum singular value transformation to reliably recover quantum information from arbitrary noisy channels when the decoupling condition is satisfied, thereby achieving communication rates arbitrarily close to the quantum capacity with significantly reduced computational complexity compared to previous methods.
This paper presents a complete solution to the infinite quantum signal processing problem for arbitrary Szegő functions by introducing the Riemann-Hilbert-Weiss algorithm, which provably computes individual phase factors independently and stably using polylogarithmic precision and polynomial computational cost.
This paper presents a hybrid quantum algorithm that leverages pre-trained Density Matrix Renormalization Group (DMRG) tensor network states to prepare high-overlap initial states for a von Neumann measurement-based quantum simulation, thereby efficiently estimating ground-state energies of complex many-body systems like quantum spin lattices and molecules.
This paper demonstrates that a Dynamical Chiral Spin Liquid (DCSL) with Z2 topological order can be stabilized at finite driving frequencies on a square lattice, where the high-frequency Magnus expansion fails, by showing that the system remains in a stationary regime characterized by specific Floquet quasi-energy features and a tensor network representation with Z2 gauge symmetry, until a critical frequency is reached where heating and chaotic behavior ensue.
This paper demonstrates a critical quantum sensor using a superconducting parametric Kerr resonator that achieves quadratic precision scaling in frequency estimation near a second-order dissipative phase transition, thereby surpassing the linear scaling limit of classical protocols.
This paper presents a noise-robust cryptographic proof of quantumness that improves upon the Brakerski et al. (2018) protocol by hiding an extended GHZ state within classical bits, thereby allowing for significantly higher error tolerance while maintaining the same circuit structure.
This paper demonstrates the generation of low-noise, high-purity, and indistinguishable single photons via single phonon-photon conversion in a quasi-two-dimensional optomechanical crystal, overcoming thermal noise limitations to enable scalable quantum networks with mechanical oscillators.
This paper investigates the transient dynamics of copropagating entangled bosons and fermions using a modified quantum shutter model to derive a transient concurrence that structurally links entanglement signatures to Hanbury-Brown and Twiss interference patterns, ultimately demonstrating that stationary Wootters concurrence coincides with interferometric visibility.
This paper establishes a framework for constructing strong symmetry-breaking phases and their associated criticalities in mixed quantum states by utilizing the ground states of lattice gauge theories as their purified counterparts, thereby introducing new mixed-state topological phases and providing a method to study quantum operations between them.
This paper introduces a class of non-integrable spin-1/2 Hamiltonians that host polynomially many exact zero-energy quantum many-body scars with tunable entanglement ranging from volume to area law, offering a new framework for robust long-distance quantum information transmission and the construction of correlated out-of-equilibrium quantum matter.