Dicke Simulators with Emergent Collective Quantum Computational Abilities
Journal article, 2015

Using an approach inspired from spin glasses, we show that the multimode disordered Dicke model is equivalent to a quantum Hopfield network. We propose variational ground states for the system at zero temperature, which we conjecture to be exact in the thermodynamic limit. These ground states contain the information on the disordered qubit-photon couplings. These results lead to two intriguing physical implications. First, once the qubit-photon couplings can be engineered, it should be possible to build scalable pattern-storing systems whose dynamics is governed by quantum laws. Second, we argue with an example of how such Dicke quantum simulators might be used as a solver of "hard" combinatorial optimization problems.

Author

P. Rotondo

University of Milan

M. C. Lagomarsino

Centre national de la recherche scientifique (CNRS)

Sorbonne University

Giovanni Viola

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Physical Review Letters

0031-9007 (ISSN) 1079-7114 (eISSN)

Vol. 114 14 143601- 143601

Subject Categories

Physical Sciences

DOI

10.1103/PhysRevLett.114.143601

More information

Latest update

9/7/2018 1