  We report a new gateway to enhance the sponatnesous emission rate of single
quantum emitters by introducing a cavity in tilted nanofiber Bragg grating
(TNFBG). We found that light emitter's coupling efficiency into the tilted
grating structure's guided mode is 65%, with 70 grating periods. This novel
tilted structure has a high Q factor ~ 1408.71 and low mode volume ~ 0.66
microm3- an important requirement. Further, the Purcell factor of a quantum
light emitter inside the nanofiber is nine times more than that of an emitter
on the cavity's surface. The further optimized system with enhanced perfromance
can be used the next generation quantum information and quantum metrology
application.
