Zobrazeno 1 - 10
of 220
pro vyhledávání: '"Gerardo Adesso"'
Publikováno v:
Physical Review Research, Vol 5, Iss 3, p 033153 (2023)
We establish fundamental upper bounds on the amount of secret key that can be extracted from quantum Gaussian states by using local Gaussian operations, local classical processing, and public communication. For one-way public communication or when tw
Externí odkaz:
https://doaj.org/article/218142f3912e4459b4f4317062a20a9e
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021)
The Gibbs paradox stems from the entropy change upon mixing two gases. Here, by considering bosonic and fermionic statistics, the authors show that an observer unable to distinguish the particles’ spins assigns a greater entropy increase to the mix
Externí odkaz:
https://doaj.org/article/a3f0150a33354d3286891acfbc483899
Publikováno v:
Entropy, Vol 23, Iss 11, p 1506 (2021)
Under the influence of external environments, quantum systems can undergo various different processes, including decoherence and equilibration. We observe that macroscopic objects are both objective and thermal, thus leading to the expectation that b
Externí odkaz:
https://doaj.org/article/f078727b05444adfb679ae782818e352
Publikováno v:
PRX Quantum, Vol 2, Iss 2, p 020308 (2021)
The quantum Fisher information matrix is a central object in multiparameter quantum estimation theory. It is usually challenging to obtain analytical expressions for it because most calculation methods rely on the diagonalization of the density matri
Externí odkaz:
https://doaj.org/article/d4d758d840f74212b61d810f988690d5
Autor:
Benjamin Morris, Benjamin Yadin, Matteo Fadel, Tilman Zibold, Philipp Treutlein, Gerardo Adesso
Publikováno v:
Physical Review X, Vol 10, Iss 4, p 041012 (2020)
The existence of fundamentally identical particles represents a foundational distinction between classical and quantum mechanics. Because of their exchange symmetry, identical particles can appear to be entangled—another uniquely quantum phenomenon
Externí odkaz:
https://doaj.org/article/c0f938d1b8454498a2d447d3ac0a2d3b
Autor:
Gerardo Adesso, Samanta Piano
Publikováno v:
Entropy, Vol 15, Iss 5, Pp 1875-1886 (2013)
We study a system represented by a Bose-Einstein condensate interacting with a cavity field in presence of a strong off-resonant pumping laser. This system can be described by a three-mode Gaussian state, where two are the atomic modes corresponding
Externí odkaz:
https://doaj.org/article/cd88730d56da476b87826b57cb5224cd
Autor:
Martin Ringbauer, Thomas R. Bromley, Marco Cianciaruso, Ludovico Lami, W. Y. Sarah Lau, Gerardo Adesso, Andrew G. White, Alessandro Fedrizzi, Marco Piani
Publikováno v:
Physical Review X, Vol 8, Iss 4, p 041007 (2018)
Quantum coherence, present whenever a quantum system exists in a superposition of multiple classically distinct states, marks one of the fundamental departures from classical physics. Quantum coherence has recently been investigated rigorously within
Externí odkaz:
https://doaj.org/article/da37bdb3e4eb490e990e7c67c9a13124
Autor:
Pietro Liuzzo-Scorpo, Luis A Correa, Felix A Pollock, Agnieszka Górecka, Kavan Modi, Gerardo Adesso
Publikováno v:
New Journal of Physics, Vol 20, Iss 6, p 063009 (2018)
The problem of estimating the frequency of a two-level atom in a noisy environment is studied. Our interest is to minimise both the energetic cost of the protocol and the statistical uncertainty of the estimate. In particular, we prepare a probe in a
Externí odkaz:
https://doaj.org/article/afd553a5516a42c38ac6511219082cd6
Publikováno v:
New Journal of Physics, Vol 20, Iss 2, p 023030 (2018)
We present a novel approach to the separability problem for Gaussian quantum states of bosonic continuous variable systems. We derive a simplified necessary and sufficient separability criterion for arbitrary Gaussian states of m versus n modes, whic
Externí odkaz:
https://doaj.org/article/5b61a87158284da0918e589b231bec77
Autor:
Bartosz Regula, Marco Piani, Marco Cianciaruso, Thomas R Bromley, Alexander Streltsov, Gerardo Adesso
Publikováno v:
New Journal of Physics, Vol 20, Iss 3, p 033012 (2018)
Characterizing genuine quantum resources and determining operational rules for their manipulation are crucial steps to appraise possibilities and limitations of quantum technologies. Two such key resources are nonclassicality, manifested as quantum s
Externí odkaz:
https://doaj.org/article/cff0a3ed062e4756911b8f0495df5d9f