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16 papers · 2 filters
Experimental certification of contextuality, coherence and dimension in a programmable universal photonic processor
Taira Giordani, Rafael Wagner, Chiara Esposito +11
Quantum superposition of high-dimensional states enables both computational speed-up and security in cryptographic protocols. However, the exponential complexity of tomographic pro…
Bootstrapping entanglement in quantum spin systems
Jiaju Zhang, Arash Jafarizadeh, M. A. Rajabpour
In this paper, we employ the bootstrap method, a technique that relies on consistency relations instead of direct diagonalization, to determine the expectation values in quantum ma…
Smooth Crossover Between Weak and Strong Thermalization using Rigorous Bounds on Equilibration of Isolated Systems
Luis Fernando dos Prazeres, Thiago R. de Oliveira
It is usually expected and observed that non-integrable isolated quantum systems thermalize. However, for some non-integrable spin chain models, in a numerical study, initial state…
Dynamics of inhomogeneous spin ensembles with all-to-all interactions: breaking permutational invariance
Fernando Iemini, Darrick Chang, Jamir Marino
We investigate the consequences of introducing non-uniform initial conditions in the dynamics of spin ensembles characterized by all-to-all interactions. Specifically, our study in…
Canonical typicality under general quantum channels
Pedro S. Correia, Gabriel Dias Carvalho, Thiago R. de Oliveira +2
With the control of ever more complex quantum systems becoming a reality, new scenarios are emerging where generalizations of the most foundational aspects of statistical quantum m…
Experimental Investigation of Geometric Quantum Speed Limits in an Open Quantum System
Diego Paiva Pires, Eduardo R. deAzevedo, Diogo O. Soares-Pinto +2
We studied geometric quantum speed limits (QSL) of a qubit subject to decoherence in an ensemble of chloroform molecules in a Nuclear Magnetic Resonance experiment. The QSL is a fu…