Quantum-correlation-enhanced weak-field detection in an optomechanical system
Quantum-correlation-enhanced weak-field detection in an optomechanical system
A theoretical scheme is proposed to enhance the signal-to-noise ratio in ultrasensitive detection by quantum correlation in a composite optomechanical system. Introducing an auxiliary oscillator and treating it as an added probe for weak-field detection, the additional noise can be greatly suppressed, which may even break the standard quantum limit. …