Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Pandit, Mahasweta"'
Coherences in mutually unbiased bases of states of an isolated quantum system follow a complementarity relation. The nonlocal advantage of quantum coherence (NAQC), defined in a bipartite scenario, is a situation in which the average quantum coherenc
Externí odkaz:
http://arxiv.org/abs/2304.07154
Publikováno v:
PRX Quantum 5, 010318 (2024)
In plethora of physical situations one can distinguish a mediator -- a system that couples other, non-interacting systems. Often the mediator itself is not directly accessible to experimentation, yet it is interesting and sometimes crucial to underst
Externí odkaz:
http://arxiv.org/abs/2303.12428
Experimental detection of entanglement certainly disturbs the underlying shared state. It is possible that the entanglement content of the system is lost in the process of its detection. This observation has led to the study of sequential detection p
Externí odkaz:
http://arxiv.org/abs/2208.08435
We propose an optimal numerical test for genuine multipartite nonlocality based on linear programming. In particular, we consider two non-equivalent models of local hidden variables, namely the Svetlichny and the no-signaling bilocal model. While our
Externí odkaz:
http://arxiv.org/abs/2206.08848
We consider a scenario where spatially separated observers share a genuinely multiparty entangled quantum state with each local observer possessing a single qubit. A particular qubit is acted upon by sequential and independent observers. We study the
Externí odkaz:
http://arxiv.org/abs/2205.02695
Publikováno v:
Phys. Rev. A 106, 032419 (2022)
We investigate the witnessing of two-qubit entangled states by sequential and independent pairs of observers, with both observers of each pair acting independently on their part of the shared state from spatially separated laboratories, and subsequen
Externí odkaz:
http://arxiv.org/abs/2201.02594
Publikováno v:
Phys. Rev. A 105, 062413 6 June 2022
We investigate the scenario where an observer, Alice, shares a two-qubit state with an arbitrary number of observers, Bobs, via sequentially and independently recycling the qubit in possession of the first Bob. It is known that there exist entangled
Externí odkaz:
http://arxiv.org/abs/2109.10310
Publikováno v:
Scientific Reports 11, 15669 (2021)
In this work we investigate the problem of simultaneous estimation of phases using generalised three- and four-mode Mach-Zehnder interferometer. In our setup, we assume that the phases are placed in each of the modes in the interferometer, which intr
Externí odkaz:
http://arxiv.org/abs/2012.07645
Autor:
Klobus, Waldemar, Miller, Marek, Pandit, Mahasweta, Ganardi, Ray, Knips, Lukas, Dziewior, Jan, Meinecke, Jasmin, Weinfurter, Harald, Laskowski, Wieslaw, Paterek, Tomasz
Publikováno v:
New J. Phys. 23, 063057 (2021)
We propose an information-theoretic quantifier for the advantage gained from cooperation that captures the degree of dependency between subsystems of a global system. The quantifier is distinct from measures of multipartite correlations despite shari
Externí odkaz:
http://arxiv.org/abs/2003.12489
Autor:
Klobus, Waldemar, Burchardt, Adam, Kolodziejski, Adrian, Pandit, Mahasweta, Vertesi, Tamas, Zyczkowski, Karol, Laskowski, Wieslaw
Publikováno v:
Phys. Rev. A 100, 032112 (2019)
We investigate the maximum purity that can be achieved by k-uniform mixed states of N parties. Such N-party states have the property that all their k-party reduced states are maximally mixed. A scheme to construct explicitly k-uniform states using a
Externí odkaz:
http://arxiv.org/abs/1906.01311