Quantum 9, 1791 (2025). https://doi.org/10.22331/q-2025-07-11-1791 We define a general formulation of quantum PCPs, which captures adaptivity and multiple unentangled provers, and give a detailed construction of the quantum reduction to a local Hamiltonian with a […]
Quantum 9, 1790 (2025). https://doi.org/10.22331/q-2025-07-11-1790 In the circuit model of quantum computing, amplitude amplification techniques can be used to find solutions to NP-hard problems defined on $n$-bits in time $text{poly}(n) 2^{n/2}$. In this work, we […]
Quantum 9, 1789 (2025). https://doi.org/10.22331/q-2025-07-09-1789 Dynamic quantum simulation is a leading application for achieving quantum advantage. However, high circuit depths remain a limiting factor on near-term quantum hardware. We present a compilation algorithm based on […]
Quantum 9, 1788 (2025). https://doi.org/10.22331/q-2025-07-09-1788 We consider generalized quantum Ising models, including those which could describe disordered materials or quantum annealers, and we prove that for all temperatures above a system-size independent threshold the path […]
Quantum 9, 1787 (2025). https://doi.org/10.22331/q-2025-07-09-1787 Quantum trajectories of a Markovian open quantum system arise from the back-action of measurements performed in the environment with which the system interacts. In this work, we consider counting measurements […]
Quantum 9, 1786 (2025). https://doi.org/10.22331/q-2025-07-03-1786 Efficient state preparation is essential for implementing efficient quantum algorithms. Whilst several techniques for low-cost state preparation exist, this work facilitates further classes of states, whose amplitudes are well approximated […]
Quantum 9, 1785 (2025). https://doi.org/10.22331/q-2025-07-03-1785 We explore the performance of the metrology scheme by employing a quantum time flip during encoding, a specific case of processes with indefinite time direction, which we refer to as […]
Quantum 9, 1784 (2025). https://doi.org/10.22331/q-2025-07-03-1784 Direct fidelity estimation is a protocol that estimates the fidelity between an experimental quantum state and a target pure state. By measuring the expectation values of Pauli operators selected through […]
Dear Quantum Community, We wanted to provide an update and announce a new attempt to improve the quality of peer review procedures in Quantum. TL;DR: from now on, instead of having regular editorial calls, we […]
Quantum 9, 1783 (2025). https://doi.org/10.22331/q-2025-06-24-1783 In this study, we explore the information capacity of open quantum systems, focusing on the effective channels formed by the subsystem of random quantum circuits and quantum Hamiltonian evolution. By […]
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