Holevo bound
Nettet15. jul. 2024 · The Holevo bound is an asymptotically achievable bound when one allows for any measurement strategy, including collective measurements on many copies of … Nettet19. jun. 2015 · The Holevo bound is a keystone in quantum information theory and plays important roles in many quantum information processing. While MHQPM provides us …
Holevo bound
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Nettet2 dager siden · The inequality (95) has a clear interpretation: the Holevo bound on the amount of classical information ”obtained” by the environment (or ”eavesdropper” in terms of secret communications) from an input ensemble of pure states does not decrease under concatenation. The inequality (95) implies that C¯(\Ψ Φ,ρ) ≥ C¯(Φb,ρ) (96) Nettet24. aug. 2024 · The commonly used evaluation method is Holevo bound, which only provides a loose upper bound for quantum measurement. In this paper, we provide a theoretical study of the positive operator-valued measure (POVM) for discriminating nonorthogonal states.
NettetThe estimation of more than one parameter in quantum mechanics is a fundamental problem with relevant practical applications. In fact, the ultimate limits in the achievable estimation precision are ultimately linked with the non-commutativity of Nettet2. des. 2010 · Abstract and Figures We present a new decoding procedure to transmit classical information in a quantum channel which, saturating asymptotically the Holevo …
Nettet9. jun. 2024 · In quantum estimation theory, the Holevo bound is known as a lower bound of weighted traces of covariances of unbiased estimators. The Holevo bound is defined … Nettet9. jan. 2024 · The Holevo Cramér-Rao bound is a lower bound on the sum of the mean-square error of estimates for parameters of a state. We provide a method for …
Nettet12. jan. 2024 · Averaged over the entire range of θ, the two-copy measurements show a m.s.e. 19 ± 4% below the theoretical single-copy measurement limit, which is only 6 ± 4% larger than the Holevo bound. armata\u0027s market longmeadowNettetIn this video I complete the proof of holevo bound using the quantum instrument operation that I discussed earlier and then discuss a small example. The vide... armata tank wikipediaNettet18. jul. 2024 · Abstract In this paper, we classify quantum statistical models based on their information geometric properties and the estimation error bound, known as the Holevo bound, into four different classes: classical, quasi-classical, D-invariant, and asymptotically classical models. bałwanek buliNettet16. okt. 2024 · Abstract. We present a family of easily computable upper bounds for the Holevo (information) quantity of an ensemble of quantum states depending on a … armata\u0027s supermarketNettet3. jul. 2024 · Holevo quantity is used to connect mutual information and an upper bound for vacuum-subtracted entropy of signal ensemble. In Ref. [ 29 ], authors adopt Holevo … armata\u0027sNettet6. aug. 2024 · The Holevo bound is an asymptotically achievable bound when one allows for any measurement strategy, including collective measurements on many copies of the probe. In this work we introduce a tighter bound for estimating multiple parameters simultaneously when performing separable measurements on finite copies of the probe. armata\u0027s market photosNettet7. okt. 2024 · RS. by Romano Santos. PH. November 30, 2024, 11:35pm. Hellbound is Netflix’s latest hit from South Korea. Photo: Courtesy of Netflix. In the Netflix series … bałwanek buli bajka