QIC Journalπ#call4reading
βοΈWitnessing #pairingcorrelations in identical-#particle systems #by Cagan Aksak and Sadi Turgut
π10.26421/QIC21.15-16-4
Dr. P. M. SecularSome interesting #physics #statistics here. These are Google Books #NGram plots for the following terms:
#QuantumEntanglement
#CorrelationFunction
#Correlation
#CorrelationCoefficient
#ConnectedCorrelationFunction
#ConnectedCorrelation
#DisconnectedCorrelation
#ClassicalCorrelations
#QuantumCorrelations
#LongRangeOrder
#ShortRangeOrder
Mattia WalschaersI wrote another (and probably final) paper on the remote generation of Wigner negativity and its connection to quantum steering.
https://arxiv.org/abs/2211.14102
The main goal of the paper is to tie up the loose ends and to provide some insights that might be useful for future research on quantum correlations in continuous variable systems. It was mainly written during free moments, so the editing might not yet be optimal...
On Quantum Steering and Wigner Negativity
Quantum correlations and Wigner negativity are two important signatures of nonclassicality in continuous-variable quantum systems. In this work, we investigate how both are intertwined in the context of the conditional generation of Wigner negativity. It was previously shown that when Alice and Bob share a Gaussian state, Bob can perform some measurement on his system to create Wigner negativity on Alice's side if and only if there is Gaussian steering from Alice to Bob. In this work, we attempt to generalise these findings to a much broader class of scenarios on which Alice and Bob share a non-Gaussian state. We show that if Alice can initially steer Bob's system with Wigner-positive measurements, Bob can remotely create Wigner negativity in Alice's subsystem. Even though this shows that quantum steering is sufficient, we also show that quantum correlations are in general not necessary for the conditional generation of Wigner negativity.
Let's see whether we can use mastodon to discuss #Physics.
Alright #quantum people, question about #QuantumCorrelations : #QuantumSteering is basically a type of quantum correlation where Alice just use information passed on by Bob and local measurements to verify the presence of entanglement. I was recently wondering whether there us some work subclasses of entanglement witnesses (of the Hahn-Banach type) that also work as steering witnesses. Does anyone know some references?
Since I migrated server, my #introduction vanished, so I'll write another one.
Hi #ScienceMastodon, I'm Mattia, a theoretical #quantum #physicist at the Laboratoire Kastler Brossel in #Paris. My field of research is #QuantumOptics and I specialise in the theory of #QuantumCorrelations in non-Gaussian quantum states. My favourite tools are #WignerFunctions and phase space representations in general. I recently also ventured in superresolution #Imaging and #QuantumMetrology.
I also like #coffee