Zobrazeno 1 - 10
of 1 449
pro vyhledávání: '"Winter, Andreas"'
Autor:
Cai, Minglai, Winter, Andreas
Publikováno v:
Proc. ISIT 2024, Athens (Greece), 7-12 July 2024
We consider the private classical capacity of a quantum wiretap channel, where the users (sender Alice, receiver Bob, and eavesdropper Eve) have access to the resource of a shared quantum state, additionally to their channel inputs and outputs. An ex
Externí odkaz:
http://arxiv.org/abs/2402.13194
Following initial work by JaJa and Ahlswede/Cai, and inspired by a recent renewed surge in interest in deterministic identification via noisy channels, we consider the problem in its generality for memoryless channels with finite output, but arbitrar
Externí odkaz:
http://arxiv.org/abs/2402.09117
Motivated by deterministic identification via (classical) channels, where the encoder is not allowed to use randomization, we revisit the problem of identification via quantum channels but now with the additional restriction that the message encoding
Externí odkaz:
http://arxiv.org/abs/2402.09116
Characterising the Haar measure on the $p$-adic rotation groups via inverse limits of measure spaces
Autor:
Aniello, Paolo, L'Innocente, Sonia, Mancini, Stefano, Parisi, Vincenzo, Svampa, Ilaria, Winter, Andreas
We determine the Haar measure on the compact $p$-adic special orthogonal groups of rotations $\mathrm{SO}(d)_p$ in dimension $d=2,3$, by exploiting the machinery of inverse limits of measure spaces, for every prime $p>2$. We characterise $\mathrm{SO}
Externí odkaz:
http://arxiv.org/abs/2401.14298
We propose an interferometric scheme for generating the totally antisymmetric state of $N$ identical bosons with $N$ internal levels (generalized singlet). This state is a resource for various problems with dramatic quantum advantage. The procedure u
Externí odkaz:
http://arxiv.org/abs/2312.17184
We show that marginals of blocks of $t$ systems of any finitely correlated translation invariant state on a chain can be learned, in trace distance, with $O(t^2)$ copies -- with an explicit dependence on local dimension, memory dimension and spectral
Externí odkaz:
http://arxiv.org/abs/2312.07516
Publikováno v:
Letters in Mathematical Physics 114, 86 (2024)
We present a complete classification of the geometry of the mutually complementary sets of entangled and separable states in three-dimensional Hilbert subspaces of bipartite and multipartite quantum systems. Our analysis begins by finding the geometr
Externí odkaz:
http://arxiv.org/abs/2309.05144
Autor:
Salek, Farzin, Winter, Andreas
We approach two interconnected problems of quantum information processing in networks: Conference key agreement and entanglement distillation, both in the so-called source model where the given resource is a multipartite quantum state and the players
Externí odkaz:
http://arxiv.org/abs/2308.01134
Publikováno v:
PRX Quantum 5, 020318, 2024
The interplay between the quantum state space and a specific set of measurements can be effectively captured by examining the set of jointly attainable expectation values. This set is commonly referred to as the (convex) joint numerical range. In thi
Externí odkaz:
http://arxiv.org/abs/2308.00753
We propose a quantum soft-covering problem for a given general quantum channel and one of its output states, which consists in finding the minimum rank of an input state needed to approximate the given channel output. We then prove a one-shot quantum
Externí odkaz:
http://arxiv.org/abs/2306.12416