A low cost, short range quantum key distribution system

Abstract We present a miniaturized quantum key distribution system, designed to augment the more mature systems currently commercially available. Our device is for consumer market, and so size, weight power are important than raw performance. To achieve our form factor, transmitter handheld receiver larger fixed terminal. envisage users would bring their transmitters centrally located receivers exchange keys which they could use at later point. Transmitting qubits 80 MHz, peak rate in excess of 20 kbps. The fits within an envelope <150 ml, weighs 65 g consumes 3.15 W power.