Quantum 10, 2040 (2026). https://doi.org/10.22331/q-2026-03-23-2040 While commonly used entanglement criteria for continuous variable systems are based on quadrature measurements, here we study entanglement detection from measurements of the Wigner function. These are routinely performed in […]
Quantum 10, 2039 (2026). https://doi.org/10.22331/q-2026-03-23-2039 Given an algorithm that outputs the correct answer with bounded error, say $1/3$, it is sometimes desirable to reduce this error to some arbitrarily small $varepsilon$ – e.g., if one […]
Quantum 10, 2038 (2026). https://doi.org/10.22331/q-2026-03-23-2038 Quantum walks in general graphs, or more specifically scattering on graphs, encompass enough complexity to perform universal quantum computation. Any given quantum circuit can be broken down into single- and […]
Quantum 10, 2037 (2026). https://doi.org/10.22331/q-2026-03-23-2037 In recent years, quantum key distribution (QKD) has evolved from a scientific research field to a commercially available security solution, supported by mathematically formulated security proofs. However, since the knowledge […]
Quantum 10, 2036 (2026). https://doi.org/10.22331/q-2026-03-23-2036 We introduce an efficient method to quantify nonstabilizerness in fermionic Gaussian states, overcoming the long-standing challenge posed by their extensive entanglement. Using a perfect sampling scheme based on an underlying […]
Quantum 10, 2035 (2026). https://doi.org/10.22331/q-2026-03-20-2035 We present an efficient spin-photon interface for free-space vertical emission coupling. Using a dipole model, we show that our design achieves a far-field collection efficiency of 96% at the numerical […]
Quantum 10, 2034 (2026). https://doi.org/10.22331/q-2026-03-20-2034 In this work, a novel quantum neural network is introduced as a means to approximate any unitary evolution through the Standard Recursive Block Basis (SRBB) and is subsequently redesigned with […]
Quantum 10, 2033 (2026). https://doi.org/10.22331/q-2026-03-20-2033 We design Snowflake, a quantum error correction decoder that, for the surface code under circuit-level noise, is roughly 25% more accurate than the Union-Find decoder, with a better mean runtime […]
Quantum 10, 2032 (2026). https://doi.org/10.22331/q-2026-03-18-2032 We propose applying the adiabatic algorithm to prepare high-energy eigenstates of integrable models on a quantum computer. We first review the standard adiabatic algorithm to prepare ground states in each […]
Quantum 10, 2031 (2026). https://doi.org/10.22331/q-2026-03-16-2031 We are interested in the simulation of open quantum systems governed by the Lindblad master equation in an infinite-dimensional Hilbert space. To simulate the solution of this equation, the standard […]
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