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Propagation of magnetically controllable lasers and magneto-optic dual switching using nitrogen-vacancy centers in diamond
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10.1063/1.4795275
/content/aip/journal/jap/113/10/10.1063/1.4795275
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/10/10.1063/1.4795275
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Structure of the negatively charged NV center in the diamond lattice, consisting of a substitutional nitrogen (N) and a neighboring vacancy (V). (b) Schematic diagram of tripod four-level NV centers interacting with a weak probe laser field with Rabi frequency , a weak signal laser field with Rabi frequency , and a strong control laser field with Rabi frequency . The strain splitting sublevel ( ) is chosen as the excited state , , , and are labeled as three ground states , , and , respectively. The symbols , , and are the frequency detunings of the corresponding probe, signal, and control fields, see text for details. (c) By applying an external magnetic field along the quantized symmetry axis of the NV center, the degeneracy among the ground states and is lifted, where the amount stands for the Zeeman shift. GHz is the zero-field splitting between the ground state sublevels and ( are degenerate at zero magnetic field) of the NV center.

Image of FIG. 2.
FIG. 2.

The probe absorption Im [panels (a) and (c)] versus the probe detuning at and the signal absorption Im [panels (b) and (d)] versus the signal detuning at for the absence and presence of the magnetic field: B = 0 [panels (a) and (b)] and [panels (c) and (d)]. The system parameters in (a)–(d) are chosen as , , , , and , respectively.

Image of FIG. 3.
FIG. 3.

The absorption responses: (a) Im and (b) Im as a function of the magnetic field strength B. The parameters are chosen as , , , , , , and , respectively.

Image of FIG. 4.
FIG. 4.

(a) Initial Gaussian-type probe pulse pair at the entrance to the NV medium . (b) and (c) Magnitude squared of probe pulse envelopes at the exit of the NV medium and for six different values of the magnetic field strength B (from the top curve to the bottom curve corresponding to the small value to the large value: B = 0, , , , , and , respectively) under the condition of the control field intensity . Other parameters are , , , , , , and , respectively. Here and in all the other figures, the time τ is measured in units of , and the propagation distance ξ of the laser field in the medium is measured in units of .

Image of FIG. 5.
FIG. 5.

(a) Initial Gaussian-type signal pulse pair at the entrance to the NV medium . (b) and (c) Magnitude squared of signal pulse envelopes at the exit of the NV medium and for six different values of the magnetic field strength B (from the top curve to the bottom curve corresponding to the small value to the large value: B = 0, , , , , and , respectively). Other parameters are the same as those in Fig. 4 except that the signal pulse length .

Image of FIG. 6.
FIG. 6.

The space-time evolution of the magnitude squared of normalized probe pulse envelopes [panels (a) and (b)] and normalized signal pulse envelopes [panels (c) and (d)] for the absence and presence of the magnetic field: B = 0 [panels (a) and (c)] and [panels (b) and (d)]. Other parameters are the same as those in Figs. 4 and 5 .

Image of FIG. 7.
FIG. 7.

Time evolution of a cw probe field [solid line of panel (a)] and a cw signal field [solid line of panel (b)] at the exit of the NV medium . The magnetic field (dashed lines): which is normalized by its peak value B 0, is turned on or off at an approximate period of . Other parameters are , , , , , , , , , and , respectively.

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/content/aip/journal/jap/113/10/10.1063/1.4795275
2013-03-13
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Propagation of magnetically controllable lasers and magneto-optic dual switching using nitrogen-vacancy centers in diamond
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/10/10.1063/1.4795275
10.1063/1.4795275
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