[spunkets]

No pie in the sky. That Kirchoff law represented conservation of charge as currents entering and leaving a junction. This law is simply conservation of energy entering ad leaving a junction. There's nothing novel about applying the law of conservation of energy to any process, including the laser transistor system they've engineered.

That system itself works by boosting the V in the conductor with the electric field of the laser beam. At the point where the beam enters the conductor, the E field is increased and the current jumps correspondingly. That jump in current doesn't represent creation of charge though, as would be the case in circuits w/o external fields applied.

Before the junction: E = i*V*t = q*V = q*E_{before_junction}*v_charge

After the junction:

E = i*V*t + c*ε_o*E² = q*E_{before_junction}*v_charge + c*ε_o*E²;

The laser just increases the charge velocity at the junction.

[spunkets]

Not ε_o. It should be the dielectric constant of the material, ε_material.

[grey_whiskers]

Thanks for the summary, you rock.

Cheers!