Quantum 8, 1271 (2024). https://doi.org/10.22331/q-2024-02-29-1271 We uncover a novel dynamical quantum phase transition, using random matrix theory and its associated notion of planar limit. We study it for the isotropic XY Heisenberg spin chain. For […]
Quantum 8, 1270 (2024). https://doi.org/10.22331/q-2024-02-29-1270 The study of state transformations by spatially separated parties with local operations assisted by classical communication (LOCC) plays a crucial role in entanglement theory and its applications in quantum information […]
Quantum 8, 1269 (2024). https://doi.org/10.22331/q-2024-02-29-1269 We study the discrimination of von Neumann measurements in the scenario when we are given a reference measurement and some other measurement. The aim of the discrimination is to determine […]
Quantum 8, 1268 (2024). https://doi.org/10.22331/q-2024-02-29-1268 Quantum loop models are well studied objects in the context of lattice gauge theories and topological quantum computing. They usually carry long range entanglement that is captured by the topological […]
Quantum 8, 1267 (2024). https://doi.org/10.22331/q-2024-02-27-1267 Naive attempts to put together relativity and quantum measurements lead to signaling between space-like separated regions. In QFT, these are known as $textit{impossible measurements}$. We show that the same problem […]
Quantum 8, 1266 (2024). https://doi.org/10.22331/q-2024-02-26-1266 Quantum metrology allows for measuring properties of a quantum system at the optimal Heisenberg limit. However, when the relevant quantum states are prepared using digital Hamiltonian simulation, the accrued algorithmic […]
Quantum 8, 1265 (2024). https://doi.org/10.22331/q-2024-02-22-1265 In this work, quantum transformers are designed and analysed in detail by extending the state-of-the-art classical transformer neural network architectures known to be very performant in natural language processing and […]
Quantum 8, 1264 (2024). https://doi.org/10.22331/q-2024-02-22-1264 Real-world applications of computing can be extremely time-sensitive. It would be valuable if we could accelerate such tasks by performing some of the work ahead of time. Motivated by this, […]
Quantum 8, 1263 (2024). https://doi.org/10.22331/q-2024-02-22-1263 We experimentally assess the suitability of transmon qubits with fixed frequencies and fixed interactions for the realization of analogue quantum simulations of spin systems. We test a set of necessary […]
Quantum 8, 1262 (2024). https://doi.org/10.22331/q-2024-02-21-1262 The interaction between light and matter is one of the oldest research areas of quantum mechanics, and a field that just keeps on delivering new insights and applications. With the […]
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