公开(公告)号：US20160218869A1

公开(公告)日：2016-07-28

申请号：US15090851

申请日：2016-04-05

Applicant: Nokia Corporation

Inventor： Joachim Wabnig ,  Antti Niskanen ,  Hongwei Li ,  David Bitauld

IPC: H04L9/08 ,  H04B10/70 ,  H04L9/14

CPC classification number: H04L9/0858 ,  H04B10/70 ,  H04L9/14 ,  H04L2209/24 ,  H04L2209/80

Abstract: For secure wireless communications the sender device uses a rail encoder that outputs dual rail-encoded states of light in a time slot. The states of light dual rail-encode information according to a phase and/or intensity difference between the dual rails, and the rail-encoded states of light may further be converted to a polarization-encoded state. This may be implemented using at least two polarizing beam-splitters with at least one quarter-wave plate disposed therebetween; and/or with integrated waveguides that convert three optical inputs to two optical outputs that are input to a polarization rotator-combiner. The encoder may randomly define the polarization-encoded state such as by randomly selecting from a finite number of at least N=3 possible polarization rotations. The recipient device may use 2N parallel, channels to decode the dual rail-encoded states of light, each channel comprising a detector configured to detect one of N possible polarization states.

Abstract translation: 对于安全无线通信，发送器设备使用轨道编码器，其在时隙中输出双轨编码的光状态。 根据双轨之间的相位和/或强度差以及轨道编码状态的光的双轨编码信息的状态可进一步转换为偏振编码状态。 这可以使用至少两个偏振光束分离器来实现，其中至少有一个四分之一波片位于它们之间; 和/或具有将三个光输入转换成输入到偏振旋转器组合器的两个光输出的集成波导。 编码器可以随机地定义偏振编码状态，例如通过从有限数量的至少N = 3个可能的偏振旋转中随机选择。 接收设备可以使用2N并行的信道来解码双轨编码的光状态，每个信道包括被配置为检测N个可能极化状态之一的检测器。

公开(公告)号：US20150249537A1

公开(公告)日：2015-09-03

申请号：US14435695

申请日：2012-10-15

Applicant: NOKIA CORPORATION

Inventor： Joachim Wabnig ,  Antti Niskanen ,  Hongwei Li ,  David Bitauld

IPC: H04L9/08 ,  H04B10/70

CPC classification number: H04L9/0858 ,  H04B10/70 ,  H04L2209/24 ,  H04L2209/34

Abstract: Methods and apparatus for distribution of keys are disclosed. An optical signal for carrying encoded information in accordance with a quantum key distribution scheme is generated. The generated optical signal has a wavelength which is changed to another wavelength prior to transmission of the optical signal. The optical signal carrying the encoded information and having the changed wavelength is received, where after decoding of the information takes place by means of detector apparatus operating in the changed wavelength.

Abstract translation: 公开了用于分配密钥的方法和装置。 产生用于承载根据量子密钥分发方案的编码信息的光信号。 生成的光信号在发送光信号之前具有被改变为另一波长的波长。 接收携带编码信息并具有改变的波长的光信号，其中在通过以改变的波长工作的检测器装置进行信息解码之后。

公开(公告)号：US10225081B2

公开(公告)日：2019-03-05

申请号：US15090851

申请日：2016-04-05

Applicant: Nokia Corporation

Inventor： Joachim Wabnig ,  Antti Niskanen ,  Hongwei Li ,  David Bitauld

IPC: H04L9/14 ,  H04L9/08 ,  H04B10/70

Abstract: For secure wireless communications the sender device uses a rail encoder that outputs dual rail-encoded states of light in a time slot. The states of light dual rail-encode information according to a phase and/or intensity difference between the dual rails, and the rail-encoded states of light may further be converted to a polarization-encoded state. This may be implemented using at least two polarizing beam-splitters with at least one quarter-wave plate disposed therebetween; and/or with integrated waveguides that convert three optical inputs to two optical outputs that are input to a polarization rotator-combiner. The encoder may randomly define the polarization-encoded state such as by randomly selecting from a finite number of at least N=3 possible polarization rotations. The recipient device may use 2N parallel channels to decode the dual rail-encoded states of light, each channel comprising a detector configured to detect one of N possible polarization states.