Quantum 9, 1792 (2025). https://doi.org/10.22331/q-2025-07-11-1792 This work introduces a self-learning protocol that incorporates measurement and feedback into variational quantum circuits for efficient quantum state preparation. By combining projective measurements with conditional feedback, the protocol learns […]
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 […]
Recent Comments