Researchers have been trying to build artificial synapses for years in the hope of getting close to the unrivaled computational performance of the human brain. A new approach has now managed to design ones that […]
Category: singularityhub
Security of quantum key distribution with detection-efficiency mismatch in the multiphoton case0 (0)
Quantum 6, 771 (2022). https://doi.org/10.22331/q-2022-07-22-771 Detection-efficiency mismatch is a common problem in practical quantum key distribution (QKD) systems. Current security proofs of QKD with detection-efficiency mismatch rely either on the assumption of the single-photon light […]
Quantum 6, 770 (2022). https://doi.org/10.22331/q-2022-07-20-770 We introduce a quantum algorithm to compute the market risk of financial derivatives. Previous work has shown that quantum amplitude estimation can accelerate derivative pricing quadratically in the target error […]
Quantum 6, 769 (2022). https://doi.org/10.22331/q-2022-07-20-769 We present an algorithm to reliably generate various quantum states critical to quantum error correction and universal continuous-variable (CV) quantum computing, such as Schrödinger cat states and Gottesman-Kitaev-Preskill (GKP) grid […]
Quantum 6, 768 (2022). https://doi.org/10.22331/q-2022-07-20-768 Quantum Phase Estimation is one of the most useful quantum computing algorithms for quantum chemistry and as such, significant effort has been devoted to designing efficient implementations. In this article, […]
Quantum 6, 767 (2022). https://doi.org/10.22331/q-2022-07-20-767 Quantum error correction has recently been shown to benefit greatly from specific physical encodings of the code qubits. In particular, several researchers have considered the individual code qubits being encoded […]
Quantum 6, 766 (2022). https://doi.org/10.22331/q-2022-07-14-766 We study a three-fold variant of the hypergraph product code construction, differing from the standard homological product of three classical codes. When instantiated with 3 classical LDPC codes, this “XYZ […]
Quantum 6, 765 (2022). https://doi.org/10.22331/q-2022-07-14-765 It is well-known that in a Bell experiment, the observed correlation between measurement outcomes – as predicted by quantum theory – can be stronger than that allowed by local causality, […]
Quantum 6, 764 (2022). https://doi.org/10.22331/q-2022-07-14-764 Measuring time means counting the occurrence of periodic phenomena. Over the past centuries a major effort was put to make stable and precise oscillators to be used as clock regulators. […]
Quantum 6, 763 (2022). https://doi.org/10.22331/q-2022-07-14-763 In general, for a bipartite quantum system $mathbb{C}^{d}otimesmathbb{C}^{d}$ and an integer $k$ such that $4leq kle d$,there are few necessary and sufficient conditions for local discrimination of sets of $k$ […]
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