Entanglement Resource Extraction in Quantum Many Body Systems

Lead Research Organisation: University College London
Department Name: London Centre for Nanotechnology

Abstract

Entanglement in quantum many body systems has been the subject of much research interest since the ability to quantify it first arose. Previous studies have studied the entanglement between two individual spins in a bipartite system; between contiguous blocks of many spins; and between blocks of spins spatially separated from one another. What remains to be studied in detail is the entanglement between distant blocks of spins which belong to the same chain. This is a useful characterisation to make, since it allows for the study of systems whereby external probes interact with the chain and become entangled to one another - thus the natural entanglement in the spin chain can be extracted for use as a resource. The extraction of entanglement in this way is preferable to generation, since it effectively comes for free. The primary aim of this research is to investigate such an entanglement model in various condensed matter systems, and aims to provide a theoretical proposal for its extraction. A further aim is then to investigate the application of this scheme in quantum metrology, and also in investigating the entanglement structure of relativistic fields.

Publications

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Studentship Projects

Project Reference Relationship Related To Start End Student Name
EP/P510270/1 01/04/2016 30/09/2021
1781307 Studentship EP/P510270/1 26/09/2016 31/03/2021 Gareth Sion Jones
 
Description Through this grant, I have developed a novel quantum metrology scheme which will allow for the measurement of quantum systems to accuracy which goes beyond the standard 'classical' limit.
Exploitation Route By applying the metrology scheme I have proposed, researchers will be able to measure the spin state of a quantum system to very high accuracy, whilst saving on time resource overheads.
Sectors Electronics,Other