2 results about "Constant intensity" patented technology

Embodiments of the present disclosure provide methods and apparatus for converting an optical signal into an electrical signal The method comprises receiving the optical signal, splitting the optical signal into a first signal and a second signal, measuring intensity information of the first signal, processing the first signal using an intensity modulator to generate an inverse intensity waveform, combining the inverse intensity waveform and the second signal to generate a constant intensity waveform, converting the constant intensity waveform into a digital constant intensity signal using an Analog-to-Digital Converter (ADC), combining the intensity information and the digital constant intensity signal, and generating the electrical signal using a Digital Signal Processor (DSP).

A non-linear superconducting quantum circuit having a first mode and a second mode is disclosed, wherein the first mode and the second mode have respective resonant frequencies. The circuit is configured such that the resonant frequency of the second mode is substantially 2N times the resonant frequency of the first mode when a predetermined current of a constant intensity is applied to the circuit. The circuit intrinsically performs a resonant 2N-to-1 photon exchange between respectively the first mode and the second mode, with N being a positive integer, thus improving the non-linear superconducting quantum circuit. When this circuit receives a predetermined current and when the second mode is driven appropriately, the circuit can stabilize a cat-qubit. In order to perform quantum measurements on this circuit, the drive of the second mode is turned off, thus switching to a no-drive manifold such that the quantum measurements can be performed.