Quantum 7, 1100 (2023). https://doi.org/10.22331/q-2023-09-07-1100 The Zeno effect, in which repeated observation freezes the dynamics of a quantum system, stands as an iconic oddity of quantum mechanics. When a measurement is unable to distinguish between […]
Quantum 7, 1099 (2023). https://doi.org/10.22331/q-2023-08-31-1099 Spin-photon interfaces (SPIs) are key devices of quantum technologies, aimed at coherently transferring quantum information between spin qubits and propagating pulses of polarized light. We study the potential of a […]
Quantum 7, 1098 (2023). https://doi.org/10.22331/q-2023-08-29-1098 In standard quantum mechanics, reference frames are treated as abstract entities. We can think of them as idealized, infinite-mass subsystems which decouple from the rest of the system. In nature, […]
Quantum 7, 1097 (2023). https://doi.org/10.22331/q-2023-08-29-1097 Linear optical quantum circuits with photon number resolving (PNR) detectors are used for both Gaussian Boson Sampling (GBS) and for the preparation of non-Gaussian states such as Gottesman-Kitaev-Preskill (GKP), cat […]
Quantum 7, 1096 (2023). https://doi.org/10.22331/q-2023-08-29-1096 Neural network approaches to approximate the ground state of quantum hamiltonians require the numerical solution of a highly nonlinear optimization problem. We introduce a statistical learning approach that makes the […]
Quantum 7, 1095 (2023). https://doi.org/10.22331/q-2023-08-29-1095 Recent studies showed the finite-size security of binary-modulation CV-QKD protocols against general attacks. However, they gave poor key-rate scaling against transmission distance. Here, we extend the security proof based on […]
Quantum 7, 1094 (2023). https://doi.org/10.22331/q-2023-08-29-1094 In the quest to unlock the maximum potential of quantum sensors, it is of paramount importance to have practical measurement strategies that can estimate incompatible parameters with best precisions possible. […]
Quantum 7, 1093 (2023). https://doi.org/10.22331/q-2023-08-29-1093 $tt{flip}$ is an extremely simple and maximally local classical decoder which has been used to great effect in certain classes of classical codes. When applied to quantum codes there exist […]
Quantum 7, 1092 (2023). https://doi.org/10.22331/q-2023-08-28-1092 We study different aspects of the stabilizer entropies (SEs) and compare them against known nonstabilizerness monotones such as the min-relative entropy and the robustness of magic. First, by means of […]
One of the biggest stumbling blocks for quantum computers is their tendency to be error-prone and the massive computational overhead required to clean up their mistakes. IBM has now made a breakthrough by dramatically reducing […]
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