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

中文翻译：

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低成本，短距离量子密钥分发系统

我们提出了一种小型化的量子密钥分配系统，旨在增强目前市场上可获得的更为成熟的量子密钥分配系统。我们的设备是为消费市场设计的，因此尺寸，重量和功率比原始性能更重要。为了达到我们的外形尺寸，发射器是手持式的，接收器是较大的固定终端。我们设想用户会将他们的发射器带到位于中心的接收器并交换密钥，以便以后使用。以80 MHz传输qubit，峰值密钥速率超过20 kbps。发射器设备可装入<150 ml的信封内，重65 g，消耗3.15 W功率。