Raytheon Company

Ulvi Yurtsever

Steven R Wilkinson

A system and method for distributing a quantum key from a first party to a second party. A first node is connected to a public channel, wherein the first node includes a pulse position modulation encoder connected to a quantum channel. A second node is connected to the public channel, wherein the second node includes a pulse position modulation decoder connected to the quantum channel. The pulse position modulation encoder encodes quantum states |0&#x3e; and |1&#x3e;, and transmits the encoded quantum states from the first node to the second node via the quantum channel. Quantum state |1&#x3e; is encoded as |1&#x3e;&#x2261;(|t&#x3e;+|t&#x3e;)/&#x221a;{square root over (2)}.

Quantum key distribution via pulse position modulation

A system and method of synchronizing clocks within a system having a plurality of base stations, wherein each base station includes a frequency locked clock. A fast moving emitter transmits pulses that are received at each base station. A time of arrival for each pulse received by each base station is recorded and the recorded times of arrival are communicated to at least one of the other base stations. The clocks are synchronized as a function of the recorded times of arrival received from each base station.

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Altadena, CA, United States of America

Ulvi Yurtsever