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Continuous monitoring can improve single-photon probability
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abstract
An engineering technique using continuous quantum measurement together with a change detection algorithm is proposed to improve the probability of single photon emission for a quantum-dot based single-photon source. The technique involves continuous monitoring of the emitter, integrating the measured signal, and a simple change detection circuit to decide when to stop pumping. The idea is to pump just long enough such that the emitter $+$ cavity system is in a state that can emit at most one photon with high probability. Continuous monitoring provides partial information on the state of the emitter. This technique is useful when the system is operating in the weak coupling regime, and the rate of pumping is smaller than, or comparable to, the emitter-cavity coupling strength, as can be the case for electrical pumping.
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Cited by 1 Pith paper
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Continuous measurement-based holonomic quantum computation
Repeated measurements of slowly rotated stabilizer generators confine a code state to a moving code space and apply a logical unitary holonomy, with derived success probabilities and a path-correction method.
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