Quantum 7, 1196 (2023). https://doi.org/10.22331/q-2023-12-05-1196 In noisy intermediate-scale quantum computing, the limited scalability of a single quantum processing unit (QPU) can be extended through distributed quantum computing (DQC), in which one can implement global operations […]
Quantum 7, 1195 (2023). https://doi.org/10.22331/q-2023-12-04-1195 The recovery of fragile quantum states from decoherence is the basis of building a quantum memory, with applications ranging from quantum communications to quantum computing. Many recovery techniques, such as […]
Quantum 7, 1194 (2023). https://doi.org/10.22331/q-2023-12-04-1194 A standard approach to quantifying resources is to determine which operations on the resources are freely available, and to deduce the partial order over resources that is induced by the […]
Quantum 7, 1193 (2023). https://doi.org/10.22331/q-2023-12-04-1193 The quasicharge superconducting qubit realizes the dual of the transmon and shows strong robustness to flux and charge fluctuations thanks to a very large inductance closed on a Josephson junction. […]
Quantum 7, 1192 (2023). https://doi.org/10.22331/q-2023-12-04-1192 Quantum Computing is believed to be the ultimate solution for quantum chemistry problems. Before the advent of large-scale, fully fault-tolerant quantum computers, the variational quantum eigensolver (VQE) is a promising […]
Quantum 7, 1191 (2023). https://doi.org/10.22331/q-2023-11-29-1191 Quantum machine learning has the potential for a transformative impact across industry sectors and in particular in finance. In our work we look at the problem of hedging where deep […]
Quantum 7, 1190 (2023). https://doi.org/10.22331/q-2023-11-28-1190 We develop a general perturbative theory of finite-coupling quantum thermometry up to second order in probe-sample interaction. By assumption, the probe and sample are in thermal equilibrium, so the probe […]
Quantum 7, 1189 (2023). https://doi.org/10.22331/q-2023-11-28-1189 In light of recently proposed quantum algorithms that incorporate symmetries in the hope of quantum advantage, we show that with symmetries that are restrictive enough, classical algorithms can efficiently emulate […]
Quantum 7, 1188 (2023). https://doi.org/10.22331/q-2023-11-22-1188 Previously proposed quantum algorithms for solving linear systems of equations cannot be implemented in the near term due to the required circuit depth. Here, we propose a hybrid quantum-classical algorithm, […]
Quantum 7, 1187 (2023). https://doi.org/10.22331/q-2023-11-21-1187 Single photon detector(SPD) problems arise in most quantum tasks, especially for measuring states going through high-lost channels. They are particularly prominent in quantum key distribution(QKD), which could be the most […]
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