2022年8月20日 · 本文为大家介绍定义量子密钥分发基础的最基本协议——bb84、b92 和 e91 协议及其安全性。

E91协议，也被称为Ekert协议，是由Artur Ekert于1991年提出的量子密钥分发（QKD）协议，它巧妙地利用量子纠缠的特性来确保通信的安全性，被誉为量子通信领域的基石。

在E91协议中，首先产生一对纠缠的量子粒子，然后分别将它们发送给通信双方，即发送方（Alice）和接收方（Bob）。 Alice和Bob各自随机选择测量基态（通常是一组正交的偏振基态）来测量他们收到的粒子。 由于量子纠缠的特性，他们的测量结果将高度相关。 测量完成后，Alice和Bob通过一个公开的经典通信渠道公开他们选择的基态，但不公开测量结果。 在他们选择了相同基态的情况下，Alice和Bob的测量结果应该是高度相关的。 这些一致的测量结果用于生成共享 …

2018年5月22日 · The BB84 protocol uses four quantum single particle state and avoids using quantum entangled states and storing quantum particles, making it easy to operate. Later in 1991, Ekert 17 proposed that QKD be implemented using the quantum entangled states explored in the Einstein-Podolsky-Rosen (EPR) thought experiment, which is called the E91 protocol.

2023年7月4日 · 主要包括BB84协议、B92协议和E91协议。 1984年，IBM公司的研究员Bennett和蒙特利大学学者Brassard提出了BB84协议，该协议把密码以密钥的形式分配给信息的收发方，故而称为“量子密钥分发（QKD）”。 BB84协议四态协议（即基于四个量子状态实现），也是第一个量子密码通信协议。 BB84协议的关. 文章浏览阅读1.5k次，点赞6次，收藏14次。 近些年来，随着量子技术的迅速发展和量子计算机的崛起，对量子密码学的研究变得更加重要。 传统的加密方 …

The fifth generation of the BMW 3 Series range of compact executive cars is designated under the model codes E90 (saloon), E91 (estate, marketed as 'Touring'), E92 (coupé) and E93 (convertible). The model was introduced in December 2004, [ 8 ] and produced by BMW until October 2013 and is often collectively referred to as the E90, E9x, or ...

The Audi e-tron FE04 which Audi competes with as the first German manufacturer with a factory-backed commitment in Formula E features an all-new colour scheme and further technology development. Champion Lucas di Grassi races in car number ‘1’ for the first time in his career.

Presented on Wednesday evening, on Friday in action for the first time: Audi’s newly designed Formula E race car made its premiere on the race track. Audi factory driver Daniel Abt turned several demonstration laps with the e-tron FE04 on a short version of the Red Bull Ring and was thus one of the highlights of the event. “A successful ...

2020年12月6日 · For your swap, you'll need to swap over the engine harness, DME, CAS, Rear differential and half axles, drive shaft, and of course the engine, transmission, and the transfer case. Front brakes are different too so i'd just drop the whole front subframe from the chassis and roll everything over.

2017年10月5日 · The new Audi e-tron FE04 has left a strong impression at the official pre-season testing of the Formula E electric racing series at Valencia (Spain). Team Audi Sport ABT Schaeffler from Monday to Thursday completed the largest number of …