1.3k citations · 8.4k across the 22 of their papers we have counts for
20 papers
Covariant quantum field theory of tachyons
Jerzy Paczos, Kacper Dębski, Szymon Cedrowski +4
Three major misconceptions concerning quantized tachyon fields: the energy spectrum unbounded from below, the frame-dependent and unstable vacuum state, and the non-covariant commu…
Relativity of superluminal observers in spacetime
Andrzej Dragan, Kacper Dębski, Szymon Charzyński +2
We develop an extension of special relativity in dimensional spacetime to account for superluminal inertial observers and show that such an extension rules out the convention…
Optimal phase estimation in quantum networks
Wim van Dam, G. Mauro D'Ariano, Artur Ekert +2
We address the problem of estimating the phase phi given N copies of the phase rotation u(phi) within an array of quantum operations in finite dimensions. We first consider the spe…
Improved algorithm for quantum separability and entanglement detection
L. M. Ioannou, B. C. Travaglione, D. Cheung +1
Determining whether a quantum state is separable or entangled is a problem of fundamental importance in quantum information science. It has recently been shown that this problem is…
Direct estimation of functionals of density operators by local operations and classical communication
Carolina Moura Alves, Pawel Horodecki, Daniel K. L. Oi +2
We present a method of determining important properties of a shared bipartite quantum state, within the ``distant labs'' paradigm, using \emph{only} local operations and classical…
Experimental detection of entanglement via witness operators and local measurements
O. Guehne, P. Hyllus, D. Bruss +4
In this paper we address the problem of detection of entanglement using only few local measurements when some knowledge about the state is given. The idea is based on an optimized…