QLW3:Quantum Sensors and Quantum Devices

Quantum Sensors and Quantum Devices:  

A quantum sensor is a special kind of sensor that uses the principles of quantum mechanics, like quantum entanglement and quantum interference, to achieve highly accurate measurements. It surpasses the current limits of traditional sensor technology. Quantum sensing involves designing and creating quantum sources (such as entangled particles) and quantum measurements that outperform any classical methods in various technological applications. This can be achieved using systems based on light (photonic systems) or solid materials.

In the field of photonic quantum sensing, we use quantum entanglement, single particles of light (photons), and squeezed states to make extremely precise measurements. Optical sensing involves using different aspects of the electromagnetic field, vibrations in solids, and special states of matter called Bose-Einstein condensates. These quantum systems can be studied to understand the changes that occur when going from one quantum state to another. Various techniques are employed to enhance the sensitivity of photonic sensors and improve the detection of weak signals using quantum correlations.

Quantum sensors often rely on systems that have continuous properties, like position and momentum. They use light in specific states, which have quantum properties like squeezing or entanglement, to detect physical changes. These changes are then measured using interferometric techniques.

In solid-state physics, a quantum sensor is a device that reacts to a stimulus. It has discrete energy levels and uses quantum effects like coherence and entanglement to measure physical quantities with higher precision than what can be achieved with classical sensors.

There are 4 criteria for solid-state quantum sensors:

  1. The system has to have discrete, resolvable energy levels.
  2. You can initialize the sensor and you can perform readout (turn on and get answer).
  3. You can coherently manipulate the sensor.
  4. The sensor interacts with a physical quantity and has some response to that quantity.

The structure of this weekend course is :
Day 1: Quantum Sensors
1.1: Why Quantum Sensors ? 
1.2: Types of Quantum Sensors

1.3: Quantum Metrology 

1.4: Other applications of Quantum sensors 
1.5: The future of Quantum sensors 

Day 2: Quantum Devices and Quantum materials
2.1: Atomic clocks
2.2: What is a Quantum material? 
2.3: Nano- technology
2.4: Quantum Dots
2.5: hBN as the new promising Quantum material 

This course is offered during the third weekend of every month, starting December 2023
Further information will be provided to those who express interest by sending a WhatsApp message to Prof MM Pant at +919810073724

Enrolment and fee payment: 

  • As the course is delivered through WhatsApp, the enrolment process is simply that of sending a WhatsApp message to Prof MM Pant at +919810073724
  • The fee for the above weekend course is Rs 1000/- and can be easily remitted through PayTM to MM Pant ( mobile number : +919810073724).
  • For those who would rather pay into a Bank account, the relevant information is : 
  • Madan Mohan Pant
  • HDFC Bank, Unitech Cyber Park, Sector 39, Gurgaon 
            A/c 26451000000301
  • (The account number is 26451 followed by six zeroes followed by 301)