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École Polytechnique

Quantum Optics 2 - Two photons and more

"Quantum Optics 1, Single photons", allowed learners to be introduced to the basic principles of light quantization, and to the standard formalism of Quantum Optics. All the examples were taken in single photons phenomena, including applications to quantum technologies. In the same spirit, "Quantum Optics 2, Two photons and more", will allow learners to use the Quantum Optics formalism to describe entangled photon, a unique feature at the root of the second quantum revolution and its applications to quantum technologies. Learners will also discover how the Quantum Optics formalism allows one to describe classical light, either coherent such as laser light, or incoherent such as thermal radiation. Using a many photons description, it is possible to derive the so-called Standard Quantum Limit (SQL), which applies to classical light, and to understand how new kinds of quantum states of light, such as squeezed states of light, allow one to beat the SQL, one of the achievements of quantum metrology. Several examples of Quantum Technologies based on entangled photons will be presented, firstly in quantum communication, in particular Quantum Teleportation and Quantum Cryptography. Quantum Computing and Quantum Simulation will also be presented, including some insights into the recently proposed Noisy Intermediate Scale Quantum (NISQ) computing, which raises a serious hope to demonstrate, in a near future, the actively searched quantum advantage, ie, the possibility to effect calculations exponentially faster than with classical computers.

Status: Cryptographic Protocols
Status: Telecommunications
Course13 hours

Featured reviews

DP

Reviewed Dec 27, 2019

Great course - follows the first course for the first three lessons, then makes a detour into Bell's inequalities / quantum teleportation where I found the formalism more challenging.

AK

Reviewed Jul 17, 2020

very good course.Please launch Quantum optics 3 course now

JR

Reviewed Jun 4, 2020

This course presents many relevant examples of current applications of quantum optics. Given that you have retained the information from the first course, the second course is very enjoyable.

BB

Reviewed Nov 2, 2019

The course content is excellent as are the video presentations and quiz questions and, above all, the explanations of concepts.

NK

Reviewed Feb 9, 2021

Very Interesting course on applied Quantum optics. Includes the latest Quantum Technologies

CW

Reviewed Nov 28, 2020

Its an awesome course to dive deep into fundamentals of quantum optics

PK

Reviewed Jun 28, 2020

Good conventional course about optics based on two photon

RK

Reviewed Dec 20, 2020

This was a fascinating journey. The material is extremally interesting and Prof Aspectdelivers it in the best manner. Highly recommended.

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