Differential amplifier gated with quantum dots absorbing incident electromagnetic radiation

A differential amplifier gated with quantum dots for absorbing an incident electromagnetic radiation, comprising:

• an unmatched pair including a first and second plurality of quantum dots for respectively absorbing a first and second spectrum, wherein the unmatched pair has a difference between the first spectrum absorbed by the first quantum dots and the second spectrum absorbed by the second quantum dots;
• and
• a matched pair of a first and second phototransistor each including a channel, the first quantum dots for absorbing the first spectrum from the incident electromagnetic radiation and gating a first current through the channel of the first phototransistor, and the second quantum dots for absorbing the second spectrum from the incident electromagnetic radiation and gating a second current through the channel of the second phototransistor,
• wherein the first and second phototransistors are coupled together for generating a differential output from the first and second currents, the differential output corresponding to the difference between the first and second spectrums within the incident electromagnetic radiation.