Extended Dicke quantum battery with interatomic interactions and driving field

Cavity-Heisenberg spin chain quantum battery

“…The calculation results of both Dicke QB [43] and extended Dicke QB [47] show that for large N , the average charging power scales like P max ∝ N 3/2 in single-photon Dicke QB. Therefore, we also expect the existence of a general scaling relation between the charging power of the CHS (or HS) QB and the number N of spins.…”

“…this reveals the quantum advantage α = 1.5 and even more than 1.5 of CHS QB can be reached, higher than that of HS QB (scaling exponent of the maximum charging power can only reach α = 0.75, see Appendix A). Similar to the extended Dicke quantum battery [47], the scaling rate can be even higher by adjusting the parameters appropriately.…”

“…In the quest for such a quantum advantage and potential experimental implementations of QB, various models have been proposed, which can be mainly divided into two categories: quantum cavity model, where arrays of N qubits are coupled to a cavity field [8,14,15,18,[43][44][45][46][47], and atomic models (two-level atoms, three-level atoms, spin, etc.) [8-14, 20, 32, 34-37, 48-55].…”

Quantum advantage in charging cavity and spin batteries by repeated interactions

“…In parallel, various types of quantum systems have been considered as quantum batteries, ranging from qubit ensembles [42,[71][72][73][74][75][76][77][78] and ladder models [67,[79][80][81][82][83][84] to oscillators and flywheels [50,[85][86][87][88]. One of the prime candidates for experimental proofs-of-principle is the Dicke-model battery [71][72][73][89][90][91], in which an ensemble of qubits is charged by a collectively coupled oscillator mode (see also related proposals in waveguide QED set-ups [92,93]). Recent efforts in cavity-and circuit-QED have brought about the first results [94,95].…”

IBM quantum platforms: a quantum battery perspective

“…During the years, the studies progressively moved towards more experimentally oriented proposals. They addressed set-ups conveniently designed in such a way to be easily implemented on existing quantum computing platforms such as arrays of artificial atoms [10][11][12][13][14][15][16][17] and systems for cavity and circuit quantum electrodynamics [18][19][20][21][22]. Very remarkably, the first experimental evidence of a QB has been reported less than one year ago in a system where fluorescent organic molecules play the role of two-level systems embedded in a microcavity [23].…”