4 papers
Entanglement transition in a cluster spin chain coupled with free spins
Kevissen Sellapillay, Laurent Raymond, Alberto D. Verga
We investigate the entanglement of a ladder of spins formed by two sublattices, a ''cluster'' chain and the ''environment'', consisting of independent spins, both coupled by an exc…
Entanglement dynamics and ergodicity breaking in a quantum cellular automaton
Kevissen Sellapillay, Alberto Verga, Giuseppe Di Molfetta
Ergodicity breaking is observed in the blockade regime of Rydberg atoms arrays, in the form of low entanglement eigenstates known as scars, which fail to thermalize. The signature…
A discrete relativistic spacetime formalism for 1+1-QED with continuum limits
Kevissen Sellapillay, Pablo Arrighi, Giuseppe Di Molfetta
We build a quantum cellular automaton (QCA) which coincides with 1+1 QED on its known continuum limits. It consists in a circuit of unitary gates driving the evolution of particles…
Quantum walk on a graph of spins: magnetism and entanglement
Kevissen Sellapillay, Alberto D. Verga
We introduce a model of a quantum walk on a graph in which a particle jumps between neighboring nodes and interacts with independent spins sitting on the edges. Entanglement propag…