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Crucial Role of Quantum Entanglement in Bulk Properties of Solids
Caslav Brukner, Vlatko Vedral, Anton Zeilinger
We demonstrate that the magnetic susceptibility of strongly alternating antiferromagnetic spin-1/2 chains is an entanglement witness. Specifically, magnetic susceptibility of coppe…
The Meissner effect and massive particles as witnesses of macroscopic entanglement
Vlatko Vedral
We show how the spatial macroscopic entanglement equivalent to the off diagonal long range order (ODLRO) implies the Meissner effect and flux quantisation for a superconductor. It…
Equation of state for Entanglement in a Fermi gas
Christian Lunkes, Caslav Brukner, Vlatko Vedral
Entanglement distance is the maximal separation between two entangled electrons in a degenerate electron gas. Beyond that distance, all entanglement disappears. We relate entanglem…
Thermodynamical Cost of Accessing Quantum Information
K. Maruyama, C. Brukner, V. Vedral
Thermodynamics is a macroscopic physical theory whose two very general laws are independent of any underlying dynamical laws and structures. Nevertheless, its generality enables us…
Macroscopic Thermodynamical Witnesses of Quantum Entanglement
Caslav Brukner, Vlatko Vedral
We show that macroscopic thermodynamical properties - such as functions of internal energy and magnetization - can detect quantum entanglement in solids at nonzero temperatures in…
High Temperature Macroscopic Entanglement
Vlatko Vedral
In this paper I intend to show that macroscopic entanglement is possible at high temperatures. I analyze multipartite entanglement produced by the pairing mechanism which featu…