Entanglement through qubit motion and the dynamical Casimir effect

Abstract

We explore the interplay between acceleration radiation and the dynamical Casimir effect (DCE) in the field of superconducting quantum technologies, analyzing the generation of entanglement between two qubits by means of the DCE in several states of qubit motion. We show that the correlated absorption and emission of photons is crucial for entanglement, which in some cases can be linked to the notion of simultaneity in special relativity. I.arXiv:1812.08554v2 [quant-ph]

Fifty Years of the Dynamical Casimir Effect

“…Various aspects of the problem of entanglement in systems with moving mirrors (or their analogs) were considered in Refs. [143,144,333,346,361,363,[524][525][526][527][528][529][530][531][532][533][534][535][536][537][538][539]. The quantum discord in the DCE was the subject of studies [333,540].…”

Generation of microwave photon perfect W states of three coupled superconducting resonators

“…[72,73] The dc-SQUID behaves as a parametric inductor to induce controllable inductive coupling between the two resonators by changing the external magnetic flux injected into the symmetric dc-SQUID loop, allowing us to produce time-dependent boundary conditions. In this case, the resonator-resonator interaction can be described as [74]…”

Tripartite Genuine Non-Gaussian Entanglement in Three-Mode Spontaneous Parametric Down-Conversion

“…For instance, the modulation of a SQUID terminating a superconducting transmission line can generate pairs of photons out of the vacuum -a particular realisation of the dynamical Casimir effect [2]-which exhibit entanglement and other forms of quantum correlations [3][4][5][6]. These correlations can be swapped to superconducting qubits [7,8] or can be used for continuous-variable quantum technological applications [9,10].…”