Frontiers of quantum physics

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Towards Quantifying Complexity with Quantum Mechanics

(2014)

Authors:

Ryan Tan, Daniel R Terno, Jayne Thompson, Vlatko Vedral, Mile Gu
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Quantum entanglement

Nature Physics Springer Nature 10:4 (2014) 256-258
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Out of equilibrium thermodynamics of quantum harmonic chains

(2014)

Authors:

A Carlisle, L Mazzola, M Campisi, J Goold, FL Semião, A Ferraro, F Plastina, V Vedral, G De Chiara, M Paternostro
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Optimized entropic uncertainty for successive projective measurements

Physical Review A American Physical Society (APS) 89:3 (2014) 032108

Authors:

Kyunghyun Baek, Tristan Farrow, Wonmin Son
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Experimental verification of quantum discord in continuous-variable states and operational significance of discord consumption

Conference on Lasers and Electro-Optics Europe - Technical Digest 2014-January (2014)

Authors:

S Hosseini, S Rahimi-Keshari, JY Haw, SM Assad, HM Chrzanowski, J Janousek, T Symul, TC Ralph, PK Lam, M Gu, K Modi, V Vedral

Abstract:

We introduce a simple and efficient technique to verify quantum discord in unknown Gaussian states and certain class of non-Gaussian states. We show that any separation in the peaks of the marginal distributions of one subsystem conditioned on two different outcomes of homodyne measurements performed on the other subsystem indicates correlation between the corresponding quadratures and hence nonzero quantum discord. We also demonstrate that under certain measurement constraints, discord between bipartite systems can be consumed to encode information that can only be accessed by coherent quantum interaction.
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