This week, IBM announced a pair of shiny new quantum computers. The company’s Condor processor is the first quantum chip of its kind with over 1,000 qubits, a feat that would have made big headlines […]
Category: singularityhub
Quantum 7, 1202 (2023). https://doi.org/10.22331/q-2023-12-06-1202 We describe a simple algorithm for estimating the $k$-th normalized Betti number of a simplicial complex over $n$ elements using the path integral Monte Carlo method. For a general simplicial […]
Quantum 7, 1201 (2023). https://doi.org/10.22331/q-2023-12-06-1201 In this work, we apply the advantage distillation method to improve the performance of a practical twin-field quantum key distribution system under collective attack. Compared with the previous analysis result […]
Quantum 7, 1200 (2023). https://doi.org/10.22331/q-2023-12-06-1200 We study the entanglement dynamics of quantum automaton (QA) circuits in the presence of U(1) symmetry. We find that the second Rényi entropy grows diffusively with a logarithmic correction as […]
Quantum 7, 1199 (2023). https://doi.org/10.22331/q-2023-12-06-1199 The device-independent framework constitutes the most pragmatic approach to quantum protocols that does not put any trust in their implementations. It requires all claims, about e.g. security, to be made […]
Quantum 7, 1198 (2023). https://doi.org/10.22331/q-2023-12-06-1198 Bosonic cat qubits stabilized by two-photon driven dissipation benefit from exponential suppression of bit-flip errors and an extensive set of gates preserving this protection. These properties make them promising building […]
Quantum 7, 1197 (2023). https://doi.org/10.22331/q-2023-12-05-1197 The presence of noise is currently one of the main obstacles to achieving large-scale quantum computation. Strategies to characterise and understand noise processes in quantum hardware are a critical part […]
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 […]
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