Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Van Herstraeten, Zacharie"'
Wigner-positive quantum states have the peculiarity to admit a Wigner function that is a genuine probability distribution over phase space. The Shannon differential entropy of the Wigner function of such states - called Wigner entropy for brevity - e
Externí odkaz:
http://arxiv.org/abs/2411.05562
We consider a quantum bosonic channel that couples the input mode via a beam splitter or two-mode squeezer to an environmental mode that is prepared in an arbitrary state. We investigate the classical capacity of this channel, which we call a non-Gau
Externí odkaz:
http://arxiv.org/abs/2312.15623
From the perspective of majorization theory, we study how to enhance the entanglement of a two-mode squeezed vacuum (TMSV) state by using local filtration operations. We present several schemes achieving entanglement enhancement with photon addition
Externí odkaz:
http://arxiv.org/abs/2312.02066
It is common knowledge that the Wigner function of a quantum state may admit negative values, so that it cannot be viewed as a genuine probability density. Here, we examine the difficulty in finding an entropy-like functional in phase space that exte
Externí odkaz:
http://arxiv.org/abs/2310.19296
Autor:
Pizzimenti, Andrew J., Dhara, Prajit, Van Herstraeten, Zacharie, Cheng, Sijie, Gagatsos, Christos N.
Publikováno v:
APL Quantum 1 September 2024; 1 (3): 036117
We consider a quantity that is the differential relative entropy between a generic Wigner function and a Gaussian one. We prove that said quantity is minimized with respect to its Gaussian argument, if both Wigner functions in the argument of the Wig
Externí odkaz:
http://arxiv.org/abs/2303.00880
Publikováno v:
AVS Quantum Sci. 5, 011401 (2023)
We show the existence of a majorization ladder in bosonic Gaussian channels, that is, we prove that the channel output resulting from the $n\text{th}$ energy eigenstate (Fock state) majorizes the channel output resulting from the $(n\!+\!1)\text{th}$
Externí odkaz:
http://arxiv.org/abs/2209.08384
Publikováno v:
Quantum 7, 1021 (2023)
We explore the role of majorization theory in quantum phase space. To this purpose, we restrict ourselves to quantum states with positive Wigner functions and show that the continuous version of majorization theory provides an elegant and very natura
Externí odkaz:
http://arxiv.org/abs/2108.09167
Publikováno v:
Phys. Rev. A 104, 042211 (2021)
We define the Wigner entropy of a quantum state as the differential Shannon entropy of the Wigner function of the state. This quantity is properly defined only for states that possess a positive Wigner function, which we name Wigner-positive states,
Externí odkaz:
http://arxiv.org/abs/2105.12843
Publikováno v:
Phys. Rev. A 100, 042104 (2019)
Quantum thermodynamics can be cast as a resource theory by considering free access to a heat bath, thereby viewing the Gibbs state at a fixed temperature as a free state and hence any other state as a resource. Here, we consider a multipartite scenar
Externí odkaz:
http://arxiv.org/abs/1905.02948
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