Universal Dynamical Control of Open Quantum Systems

Figure 12

(a) Schematic drawing of two locally modulated atoms in separated cavities, coupled to the cavity modes. (b) Concurrence as a function of time. Unmodulated (black) and modulated (blue) scenarios, with no cross decoherence, 𝜇=0. Inset: decoherence rate magnitude 𝜈(𝑡) (solid) and asymmetry 𝜁(𝑡) (dashed) as a function of time. Parameters: 𝑎=0.75, 𝜔_𝑎=20/𝑡_𝑐, 𝜔₀=0.8𝜔_𝑎, 𝛽=1/𝜔_𝑎, 𝛾^unmod=0.032/𝑡_𝑐, 𝛾^mod=2.65𝛾^unmod, 𝜏_1,2/𝑡_𝑐={0.175,0.1}, and 𝜙_1,2=𝜋/10. (c) Schematic drawing of two locally modulated atoms in the same cavity, coupled to the cavity modes. (d) Concurrence as a function of time. Unmodulated (black) and modulated (blue) scenarios, with cross decoherence. Inset: cross-decoherence 𝜇(𝑡) (dotted) and asymmetry 𝜁(𝑡) (dashed) as a function of time. Parameters: 𝑎=0.75, 𝜔_𝑎=20/𝑡_𝑐, 𝜔₀=𝜔_𝑎, 𝛽=10/𝜔_𝑎, 𝛾^unmod=0.032/𝑡_𝑐, 𝛾^mod=1.1𝛾^unmod, 𝜏_1,2/𝑡_𝑐={0.175,0.1}, 𝜙_1,2=𝜋/10, and 𝜈(𝑡≫𝑡_𝑐)=0.28/𝑡_𝑐.

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