Basics of Quantum Metrology (Lecture 2) by Sai Vinjanampathy

Program

Introduction to Precision Measurements and Quantum Metrology

ORGANIZERS: Subhadeep De (IUCAA, Pune), Saikat Ghosh (IIT Kanpur), Arup Kumar Raychaudhuri (CGCRI, Kolkata), Kasturi Saha (IIT Bombay, Mumbai), Bijaya Kumar Sahoo (PRL, Ahmedabad) and Anil Shaji (IISER, Thiruvananthapuram)

DATE: 10 July 2023 to 21 July 2023

VENUE: Ramanujan Lecture Hall, ICTS Bengaluru

Quantum physics has come a long way since its inception 120 years ago to the application of quantum effects in day-to-day life in the form of quantum technologies that are emerging rapidly across multiple fields. What began as a powerful theory on nature that describes the properties of particles, atoms led to a deep understanding of matter, energy, and their behavior at various scales. Over the past decade, there has been a paradigm shift with the development of the ability to control individual quantum systems. Applicable quantum technologies ranging from quantum computers, sensors, and encryption tools incorporating individual quantum systems have come to the force. Quantum resources like entanglement, superposition, and coherence can be used to attain unprecedented accuracies that are not achievable using classical methods and comparable resources. Pushing the boundaries of measurement precision is not only interesting in its own right but also fundamental to discovering new science beyond the limits of what is known. It has to be emphasized that quantum measurement and sensing technology are founded on and fundamentally relies on a proper understanding of precision measurements.

In the school, we aim to build knowledge and awareness on precision measurements and quantum metrology among young students who will be the future researchers in this area and be part of the National Quantum Mission in India.

The lectures in this school shall cover:

Theory of precision measurements
Theory of estimation
Classical and quantum metrology
Atomic & optical physics techniques used for quantum metrology and precision measurements
Precision measurements using atoms/ ions/ molecules, photons, NV-centers.

ICTS is committed to building an environment that is inclusive, non-discriminatory, and welcoming of diverse individuals. We especially encourage the participation of women and other under-represented groups.

Essential qualification of Participants: M. Sc. 2nd year (Physics, engineering physics, related areas), Ph. D students, Junior / senior research fellows, post-doctoral fellow/ research associates.

Supported By:

Advanced Photonics
Atos India Private Limited
Diamond Elements
New Age Instruments & Materials Private Limited
One Industry, Western System
Simco Global Technology & Systems Limited
Tabor Electronics

[painandsuffer]

Just like [0, 1]off and on simultaneously is superposition.

Can there ever be superiorpostion [-1, 0, 1, ] simultaneously?

So, in this analogy, interpreting negative one as dark energy provides a conceptual connection where negative one represents an opposing or counterbalancing energy to the positive energy represented by one. It is a way of associating the concept of negative one with the notion of a counteracting or opposing force in the context of energy.

While this analogy is not a direct mathematical interpretation of negative one, it offers a conceptual framework to understand the relationship between different energy states or phenomena.

-1 = dark energy
0 = off
1 = energy

Could this be possible

[pdelong]

I can't seem to find Lecture 1 of this series when I search on the channel (search term, "Vinjanampathy"). I'd like to start with that one if I can.

(Actually, I can't even find _this_ video on the channel, when I search, so I'm not sure how I found it in the first place.)