Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Yadin, Benjamin"'
Recently, multilevel collectively coupled quantum machines like heat engines and refrigerators have been shown to admit performance enhancements in analogy to superradiance. Thus far, investigations of the performance of collective quantum machines h
Externí odkaz:
http://arxiv.org/abs/2408.08797
Autor:
Ohst, Ties-A., Yadin, Benjamin, Ostermann, Birte, de Wolff, Timo, Gühne, Otfried, Nguyen, Hai-Chau
Understanding quantum phenomena which go beyond classical concepts is a focus of modern quantum physics. Here, we show how the theory of nonnegative polynomials emerging around Hilbert's 17th problem, can be used to optimally exploit data capturing t
Externí odkaz:
http://arxiv.org/abs/2403.09807
Publikováno v:
Phys. Rev. Lett. 132, 230404 (2024)
Quantum speed limits provide upper bounds on the rate with which a quantum system can move away from its initial state. Here, we provide a different kind of speed limit, describing the divergence of a perturbed open system from its unperturbed trajec
Externí odkaz:
http://arxiv.org/abs/2307.09118
Publikováno v:
Physical Review Letters 132, 210801 (2024)
Armed with quantum correlations, quantum sensors in a network have shown the potential to outclass their classical counterparts in distributed sensing tasks such as clock synchronization and reference frame alignment. On the other hand, this analysis
Externí odkaz:
http://arxiv.org/abs/2307.07758
Publikováno v:
Phys. Rev. Research 5, 033018 (2023)
Quantum systems of indistinguishable particles are commonly described using the formalism of second quantisation, which relies on the assumption that any admissible quantum state must be either symmetric or anti-symmetric under particle permutations.
Externí odkaz:
http://arxiv.org/abs/2206.12639
Multiparameter quantum metrology and mode entanglement with spatially split nonclassical spin states
Publikováno v:
New J. Phys. 25 073006 (2023)
We identify the multiparameter sensitivity of split nonclassical spin states, such as spin-squeezed and Dicke states spatially distributed into several addressable modes. Analytical expressions for the spin-squeezing matrix of a family of states that
Externí odkaz:
http://arxiv.org/abs/2201.11081
We examine the problem of state transformations in the framework of Gaussian thermal resource theory in the presence of catalysts. To this end, we introduce an expedient parametrisation of covariance matrices in terms of principal mode temperatures a
Externí odkaz:
http://arxiv.org/abs/2112.05540
Publikováno v:
Nature Communications 12, 2410 (2021)
The Einstein-Podolsky-Rosen (EPR) paradox plays a fundamental role in our understanding of quantum mechanics, and is associated with the possibility of predicting the results of non-commuting measurements with a precision that seems to violate the un
Externí odkaz:
http://arxiv.org/abs/2009.08440
The classical Gibbs paradox concerns the entropy change upon mixing two gases. Whether an observer assigns an entropy increase to the process depends on their ability to distinguish the gases. A resolution is that an "ignorant" observer, who cannot d
Externí odkaz:
http://arxiv.org/abs/2006.12482
Autor:
Narasimhachar, Varun, Assad, Syed, Binder, Felix C., Thompson, Jayne, Yadin, Benjamin, Gu, Mile
Publikováno v:
npj Quantum Information volume 7, Article number: 9 (2021)
Thermodynamic resources, beyond their well-known usefulness in work extraction and other thermodynamic tasks, are often important also in tasks that are not evidently thermodynamic. Here we develop a framework for identifying such resources in divers
Externí odkaz:
http://arxiv.org/abs/1909.07364