Resonant Fluorescence Spectroscopy in Low Dimensional Semiconductor Structures

Abstract

Linear quantum computation and teleportation requires interference of two single photons pulses. These photons must be indistinguishable i.e. must have same pulse width, arrival time etc. Moreover, "if the radiative transition between two quantum states of a single emitter is broadened due to spontaneous emission, single photon pulse width is Fourier transform limited" and can generate indistinguishable photons[4]. Resonant fluorescence does not have any jitter in photon emission due to the absence of non-radiative relaxation process. "Nonclassical light can be generated by resonant excitation of individual emitters to scatter single photon with coherence property determine by laser source". This creates a prototype quantum optical circuit and provide a test bed for all optical generation, distribution, and detection of nonclassical light on a common photonic chip for semiconductor based photonic information technology[Reithmaier et al.]. Moreover, resonance fluorescence is used in high fidelity readout of trapped ion qubits, and "resonant coherent excitation on quantum dot has proven to be very efficient for achieving on high degree of indistinguishability and coherence"[4].