Theoretical seminar | 28 October 2020
Open quantum systems composed of atoms interacting with light exhibit behavior that is akin to that of associative memories . This means that they possess stationary states that can be interpreted as stored memory patterns, which are retrieved when the initial state is inside the basin of attraction of a given pattern . The corresponding pattern retrieval dynamics can be observed in actual experimental settings. In these experiments, atoms are confined within an optical cavity whose photons mediate long-range interactions . Stored patterns are encoded in the atom-light coupling constants. This setting offers an interesting opportunity for studying quantum generalizations of associative memories and stored (quantum) patterns in this context . Moreover, it allows to systematically construct scenarios in which quantum effects might be beneficial, e.g., for speeding up the pattern retrieval process . I will talk about recent research of my group on this subject, which builds a bridge between classic machine learning concepts, such as the э Neural Network, and the most recent experimental manifestations of synthetic quantum matter.
 E. Fiorelli et al., Physical Review Letters 125, 070604 (2020)
 F. Carollo and I. Lesanovsky, arXiv:2009.13932 (2020)
 V.D. Vaidya et al., Physical Review X 8, 011002 (2018)
 P. Rotondo et al., Journal of Physics A 51, 115301 (2018)
 E. Fiorelli et al., Physical Review A 99, 032126 (2019)
ITMO Scientists Demonstrate Record-Breaking Light Coupling into Optical Fiber at Large Incidence Angles