公开(公告)号：EP3329359A1

公开(公告)日：2018-06-06

申请号：EP16831127.2

申请日：2016-07-22

申请人： Los Alamos National Security, LLC

发明人： NORDHOLT, Jane, Elizabeth ,  HUGHES, Richard, John ,  NEWELL, Raymond, Thorson ,  PETERSON, Charles, Glen ,  ROSIEWICZ, Alexander

IPC分类号： G06F7/58

摘要： Random number generators include a thermal optical source and detector configured to produce random numbers based on quantum-optical intensity fluctuations. An optical flux is detected, and signals proportional to optical intensity and a delayed optical intensity are combined. The combined signals can be electrical signals or optical signals, and the optical source is selected so as to have low coherence over a predetermined range of delay times. Balanced optical detectors can be used to reduce common mode noise, and in some examples, the optical flux is directed to only one of a pair of balanced detectors.

公开(公告)号：EP2622784A2

公开(公告)日：2013-08-07

申请号：EP11829926.2

申请日：2011-09-29

申请人： Los Alamos National Security, LLC

发明人： HUGHES, Richard, John ,  NORDHOLT, Jane, Elizabeth ,  PETERSON, Charles, Glen

IPC分类号： H04L9/08 ,  H04L9/14 ,  H04L9/32 ,  H04W12/04

CPC分类号： H04L9/0852 ,  H04L9/083 ,  H04L9/3226 ,  H04L9/3236 ,  H04L63/062 ,  H04L2209/38 ,  H04W12/04 ,  H04W88/08

摘要： Techniques and tools for implementing protocols for secure multi-party communication after quantum key distribution ("QKD") are described herein. In example implementations, a trusted authority facilitates secure communication between multiple user devices. The trusted authority distributes different quantum keys by QKD under trust relationships with different users. The trusted authority determines combination keys using the quantum keys and makes the combination keys available for distribution (e.g., for non-secret distribution over a public channel). The combination keys facilitate secure communication between two user devices even in the absence of QKD between the two user devices. With the protocols, benefits of QKD are extended to multi-party communication scenarios. In addition, the protocols can retain benefit of QKD even when a trusted authority is offline or a large group seeks to establish secure communication within the group.

摘要翻译： 本文描述了在量子密钥分发（“QKD”）之后实现安全多方通信协议的技术和工具。 在示例实现中，可信授权有助于多个用户设备之间的安全通信。 受信任的机构在与不同用户的信任关系下，通过QKD分配不同的量子密钥。 受信任的机构使用量子密钥确定组合密钥，并使组合密钥可用于分发（例如，用于通过公共信道的非秘密分发）。 即使在两个用户设备之间没有QKD的情况下，组合键也促进了两个用户设备之间的安全通信。 通过协议，QKD的优点将扩展到多方通信场景。 此外，即使信任的权威机构处于脱机状态，或者大型组织寻求在组内建立安全通信，协议也可以保留QKD的优点。

公开(公告)号：EP2885886A2

公开(公告)日：2015-06-24

申请号：EP13837039.0

申请日：2013-08-16

申请人： Los Alamos National Security, LLC

发明人： NORDHOLT, Jane, Elizabeth ,  PETERSON, Charles, Glen ,  NEWELL, Raymond, Thorson ,  HUGHES, Richard, John

IPC分类号： H04B10/00

CPC分类号： H04B10/532 ,  H04B10/501 ,  H04B10/5161 ,  H04B10/54 ,  H04B10/541 ,  H04B10/70 ,  H04L9/0852

摘要： Security is increased in quantum communication (QC) systems lacking a true single-photon laser source by encoding a transmitted optical signal with two or more decoy-states. A variable attenuator or amplitude modulator randomly imposes average photon values onto the optical signal based on data input and the predetermined decoy-states. By measuring and comparing photon distributions for a received QC signal, a single-photon transmittance is estimated. Fiber birefringence is compensated by applying polarization modulation. A transmitter can be configured to transmit in conjugate polarization bases whose states of polarization (SOPs) can be represented as equidistant points on a great circle on the Poincaré sphere so that the received SOPs are mapped to equidistant points on a great circle and routed to corresponding detectors. Transmitters are implemented in quantum communication cards and can be assembled from micro-optical components, or transmitter components can be fabricated as part of a monolithic or hybrid chip-scale circuit.

公开(公告)号：EP2622783A1

公开(公告)日：2013-08-07

申请号：EP11829925.4

申请日：2011-09-29

申请人： Los Alamos National Security, LLC

发明人： NORDHOLT, Jane, Elizabeth ,  HUGHES, Richard, John ,  NEWELL, Raymond, Thorson ,  PETERSON, Charles, Glen ,  ROSENBERG, Danna ,  MCCABE, Kevin, Peter ,  TYAGI, Kush, T. ,  DALLMANN, Nicholas

IPC分类号： H04L9/08 ,  H04L9/32

CPC分类号： H04L9/0852 ,  H04L9/083 ,  H04L9/0897 ,  H04L9/3231

摘要： Techniques and tools for quantum key distribution (“QKD”) between a quantum communication (“QC”) card, base station and trusted authority are described herein. In example implementations, a QC card contains a miniaturized QC transmitter and couples with a base station. The base station provides a network connection with the trusted authority and can also provide electric power to the QC card. When coupled to the base station, after authentication by the trusted authority, the QC card acquires keys through QKD with a trusted authority. The keys can be used to set up secure communication, for authentication, for access control, or for other purposes. The QC card can be implemented as part of a smart phone or other mobile computing device, or the QC card can be used as a fillgun for distribution of the keys.

摘要翻译： 用于量子通信（“QC”）卡，基站和可信机构之间量子密钥分配（“QKD”）的技术和工具中描述英寸 在示例实现中，QC卡包含一个小型化的发射机QC和夫妇与基站。 基站可以获取与可信机构的网络连接，并因此可以提供电力给QC卡。 当连接到基站，由所述受信任的权威认证之后，该QC卡通过与可信机构QKD获取密钥。 这些密钥可以用来建立安全的通信，进行认证，访问控制，或用于其他目的。 该QC卡可以被实现为智能电话或其它移动计算设备，或该QC卡的一部分可以用作用于键的分布的fillgun。