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We develop a rigorous mathematically consistent description of PT symmetricoptical systems by using second quantization. We demonstrate the possibility ofsignificant spontaneous generation of photons in PT symmetric systems. Furtherwe show the emergence of Hanbury-Brown Twiss (HBT) correlations in spontaneousgeneration. We show that the spontaneous generation determines decisively thenonclassical nature of fields in PT symmetric systems. Our work can be appliedto other systems like plasmonic structure where losses are compensated by gainmechanisms.

Spontaneous Generation of Photons in Transmission of Quantum Fields in PT Symmetric Optical Systems