title: Simulating quantum fields with cavity QED.
abstract: As the realization of a fully operational quantum computer remains distant, quantum simulation, whereby one quantum system is engineered to simulate another, becomes a key goal of great practical importance. Here we report on a variational method exploiting the natural physics of cavity QED architectures to simulate strongly interacting quantum fields. Our scheme is broadly applicable to any architecture involving tunable and strongly nonlinear interactions with light; as an example, we demonstrate that existing cavity devices could simulate models of strongly interacting bosons. The scheme can be extended to simulate systems of entangled multicomponent fields, beyond the reach of existing classical simulation methods.
authors.affiliation: QOLS, Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom.
authors.forename: Sean
authors.initials: S
authors.lastname: Barrett
authors.forename: Klemens
authors.initials: K
authors.lastname: Hammerer
authors.forename: Sarah
authors.initials: S
authors.lastname: Harrison
authors.forename: Tracy E
authors.initials: TE
authors.lastname: Northup
authors.forename: Tobias J
authors.initials: TJ
authors.lastname: Osborne