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 […]
Quantum 8, 1261 (2024). https://doi.org/10.22331/q-2024-02-21-1261 We introduce a stabilizer formalism for the general quantum error correction framework called operator algebra quantum error correction (OAQEC), which generalizes Gottesman’s formulation for traditional quantum error correcting codes (QEC) […]
Quantum 8, 1260 (2024). https://doi.org/10.22331/q-2024-02-20-1260 Quantum dynamics with local interactions in lattice models display rich physics, but is notoriously hard to study. Dual-unitary circuits allow for exact answers to interesting physical questions in clean or […]
Quantum 8, 1259 (2024). https://doi.org/10.22331/q-2024-02-20-1259 Conical intersections are topologically protected crossings between the potential energy surfaces of a molecular Hamiltonian, known to play an important role in chemical processes such as photoisomerization and non-radiative relaxation. […]
Quantum 8, 1258 (2024). https://doi.org/10.22331/q-2024-02-19-1258 Quantum circuits must run on quantum computers with tight limits on qubit and gate counts. To generate circuits respecting both limits, a promising opportunity is exploiting $uncomputation$ to trade qubits […]
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