874 citations · 1.6k across the 16 of their papers we have counts for
16 papers
Entropic partial orderings of quantum measurements
Adam Teixidó-Bonfill, Joseph Schindler, Dominik Šafránek
We investigate four partial orderings on the space of quantum measurements (i.e on POVMs or positive operator valued measures), describing four notions of coarse/fine-ness of measu…
Observational entropy with general quantum priors
Ge Bai, Dominik Šafránek, Joseph Schindler +2
Observational entropy captures both the intrinsic uncertainty of a thermodynamic state and the lack of knowledge due to coarse-graining. We demonstrate two interpretations of obser…
First Principles Numerical Demonstration of Emergent Decoherent Histories
Philipp Strasberg, Teresa E. Reinhard, Joseph Schindler
Within the histories formalism the decoherence functional is a formal tool to investigate the emergence of classicality in isolated quantum systems, yet an explicit evaluation of i…
Continuity bounds on observational entropy and measured relative entropies
Joseph Schindler, Andreas Winter
We derive a measurement-independent asymptotic continuity bound on the observational entropy for general POVM measurements, making essential use of its property of bounded concavit…
Observational entropy, coarse quantum states, and Petz recovery: information-theoretic properties and bounds
Francesco Buscemi, Joseph Schindler, Dominik Šafránek
Observational entropy provides a general notion of quantum entropy that appropriately interpolates between Boltzmann's and Gibbs' entropies, and has recently been argued to provide…
Unitarity and the information problem in an explicit model of black hole evaporation
Joseph Schindler, Evan Frangipane, Anthony Aguirre
We consider the black hole information problem in an explicitly defined spacetime modelling black hole evaporation. Using this context we review basic aspects of the problem, with…
Basics of observational entropy
Joseph Schindler
These notes provide a brief primer on the basic aspects of "observational entropy" (also known as "quantum coarse-grained entropy"), a general framework for applying the concept of…
A brief introduction to observational entropy
Dominik Šafránek, Anthony Aguirre, Joseph Schindler +1
In the past several years, observational entropy has been developed as both a (time-dependent) quantum generalization of Boltzmann entropy, and as a rather general framework to enc…
Quantum correlation entropy
Joseph Schindler, Dominik Šafránek, Anthony Aguirre
We study quantum coarse-grained entropy and demonstrate that the gap in entropy between local and global coarse-grainings is a natural generalization of entanglement entropy to mix…
Geometric calculus on pseudo-Riemannian manifolds
Joseph C. Schindler
This article provides a pedagogically oriented introduction to geometric (Clifford) calculus on pseudo-Riemannian manifolds. Unlike usual approaches to the topic, which rely on emb…
Understanding black hole evaporation using explicitly computed Penrose diagrams
Joseph C Schindler, Anthony Aguirre, Amita Kuttner
Explicitly computed Penrose diagrams are plotted for a classical model of black hole formation and evaporation, in which black holes form by the accretion of infalling spherical sh…
Experimental Observation of Stabilization and Lasing Death via Asymmetric Gain
M. Chitsazi, S. Factor, J. Schindler +3
Using a pair of coupled LRC cavities we experimentally demonstrate that instabilities and amplification action can be tamed by a spatially inhomogenous gain. Specifically we observ…
PT-Symmetric Electronics
J. Schindler, Z. Lin, J. M. Lee +3
We show both theoretically and experimentally that a pair of inductively coupled active LRC circuits (dimer), one with amplification and another with an equivalent amount of attenu…
Experimental observation of the dual behavior of -symmetric scattering
Zin Lin, Joseph Schindler, Fred M. Ellis +1
We investigate experimentally parity-time () symmetric scattering using circuits in an inductively coupled - symmetric pair connected to transmission li…
Bypassing the bandwidth theorem with PT symmetry
Hamidreza Ramezani, J. Schindler, F. M. Ellis +2
The beat time τ_{fpt} associated with the energy transfer between two coupled oscillators is dictated by the bandwidth theorem which sets a lower bound τ_{fpt}\sim 1/δω. We show, b…
Experimental Study of Active LRC Circuits with PT-Symmetries
Joseph Schindler, Ang Li, Mei C. Zheng +2
Mutually coupled modes of a pair of active LRC circuits, one with amplification and another with an equivalent amount of attenuation, provide an experimental realization of a wide…