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48 papers · 2 filters
Spectrum conditions for symmetric extendible states
Geir Ove Myhr, Norbert Lütkenhaus
We analyze bipartite quantum states that admit a symmetric extension. Any such state can be decomposed into a convex combination of states that allow a _pure_ symmetric extension.…
Symmetric extension in two-way quantum key distribution
Geir Ove Myhr, Joseph M. Renes, Andrew C. Doherty +1
We introduce symmetric extensions of bipartite quantum states as a tool for analyzing protocols that distill secret key from quantum correlations. Whether the correlations are comi…
Characterizing heralded single-photon sources with imperfect measurement devices
M. Razavi, I. Söllner, E. Bocquillon +3
Any characterization of a single-photon source is not complete without specifying its second-order degree of coherence, i.e., its function. An accurate measurement of suc…
Efficient discrete-time simulations of continuous-time quantum query algorithms
R. Cleve, D. Gottesman, M. Mosca +2
The continuous-time query model is a variant of the discrete query model in which queries can be interleaved with known operations (called "driving operations") continuously in tim…
Testing Born's Rule in Quantum Mechanics with a Triple Slit Experiment
Urbasi Sinha, Christophe Couteau, Zachari Medendorp +4
In Mod. Phys. Lett. A 9, 3119 (1994), one of us (R.D.S) investigated a formulation of quantum mechanics as a generalized measure theory. Quantum mechanics computes probabilities fr…
Generic quantum walk using a coin-embedded shift operator
C. M. Chandrashekar
The study of quantum walk processes has been widely divided into two standard variants, the discrete-time quantum walk (DTQW) and the continuous-time quantum walk (CTQW). The conne…