Generation of photons from vacuum in cavity via time-modulation of a
qubit invisible to the field
- URL: http://arxiv.org/abs/2206.05863v2
- Date: Thu, 22 Sep 2022 18:35:44 GMT
- Title: Generation of photons from vacuum in cavity via time-modulation of a
qubit invisible to the field
- Authors: M V S de Paula, W W T Sinesio, A V Dodonov
- Abstract summary: We find that tripartite entangled states with a small number of photons can be generated from the system ground state under resonant modulations.
We attest our approximate analytic results by numeric simulations and show that photon generation from vacuum persists in the presence of common dissipation mechanisms.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We propose a scheme for generation of photons from vacuum due to
time-modulation of a quantum system coupled indirectly to the cavity field
through some ancilla quantum subsystem. We consider the simplest case when the
modulation is applied to an artificial 2-level atom (we call t-qubit), while
the ancilla is a stationary qubit coupled via the dipole interaction both to
the cavity and t-qubit. We find that tripartite entangled states with a small
number of photons can be generated from the system ground state under resonant
modulations, even when the t-qubit is far detuned from both the ancilla and the
cavity, provided its bare and modulation frequencies are properly adjusted as
function of other system parameters. We attest our approximate analytic results
by numeric simulations and show that photon generation from vacuum persists in
the presence of common dissipation mechanisms.
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