Psiket Webinars

This talk explores the major frontiers of the Second Quantum Revolution from a quantum hardware perspective, focusing on how the future of quantum technologies will be shaped. I present a forward-looking view of how the three foundational pillars—quantum computation, quantum communication, and quantum sensing—are co-evolving toward scalable and practically deployable quantum infrastructures. Within this framework, I highlight selected examples from my own work, including spin–photon interfaces in silicon for scalable quantum computing architectures and quantum networking, erbium-doped nanoparticle single-photon sources for telecom-band quantum communication, and a levitated superconducting particle coupled to a superconducting qubit as a platform for macroscopic quantum control and ultra-sensitive quantum sensing.

In this presentation, we review research in the field of electromechanics and its role in quantum science and technology. Electromechanics explores systems in which mechanical resonators are parametrically coupled to radio-frequency or optical circuits, providing a framework for manipulating quantum states. Mechanical resonators also serve as coherent interfaces in hybrid quantum systems, enabling links between microwave and optical domains, as well as between superconducting qubits and mechanical modes. In recent years, significant advances have been achieved in the fabrication of high-coherence nanomechanical resonators, and a brief overview of some of these developments will be presented.

Metamaterials are an amazing group of engineered materials that allow us to precisely control waves such as light, sound, and heat. In this seminar, we will review the path of formation and evolution of metamaterials from their early stages to their new horizons in the quantum world. In the first part, we will be introduced to classical metamaterials and see how these materials can make objects almost invisible by bending the path of light, or achieve a kind of “sound cloak” and “thermal cloak” by guiding sound and heat, achievements that may seem fantastic at first glance, but are based on precise physical principles. Then we enter a new realm called quantum metamaterials; where phenomena such as superposition and quantum entanglement pave the way for advanced technologies in fields such as quantum computing, secure communications, and ultra-sensitive sensors. This webinar is held in simple and practical language for all science enthusiasts, whether you are an expert or simply curious.

Since their discovery more than a century ago, excited Rydberg atoms have played a central role in the development of quantum theory and atomic physics. In recent years, the advent of cold gases has led to a revival of the physics of Rydberg atoms, making it possible to create, study, manipulate, and exploit extraordinary atomic states with unprecedented precision. The combination of extremely low temperatures, high densities, and strong atomic interactions has led to rich physical behaviors with promising applications in optical science and quantum information. In this talk, I will discuss various ideas for transforming laser-induced Rydberg atoms into a versatile platform for quantum information, quantum simulation, large-scale quantum entanglement, and the fabrication of quantum materials.

Many of the most important researches in modern quantum sciences and technologies, such as precise quantum measurements, quantum detection and sensing, quantum amplifiers, as well as the description of important phenomena such as electromagnetic induced transparency and Fano resonance, are directly related to the linear response of quantum systems to external stimuli. In this lecture, we show how an open quantum system that is in thermodynamic equilibrium with its surroundings at a certain temperature responds when it is affected by an external driving factor. Finally, we investigate the linear response of an optomechanical system to a weak time-dependent perturbation in the framework of the generalized linear response theory.

The development of quantum technology has so far raised many hopes for different target markets. Sometimes the approach and driving engine of this technology is evaluated for its special functions and sometimes for its money-making future. This presentation evaluates the role and impact of quantum technology in the country's technology development by proposing a hybrid ecosystem.

Quantum controlled states can be used as quantum sensors. In the meantime, one of the favorite sensors are magnetometer sensors based on NV-vacancy nitrogen centers. NV centers can emit red light when excited by green light, but the probability of such phenomena depends on the spin states of their electrons. By placing the spin states in a superposition, only microwaves with the appropriate frequency can change the radiation intensity. Most importantly, this quantum state can last for more than a millisecond at room temperature thanks to the hard diamond lattice that shields the NV centers from vibrations. Among all solid state spins, NV centers in diamond have attracted the most attention for sensing purposes. This is partly due to easy light detection at room temperature and partly due to their stability in very small crystals and nanostructures.

Quantum radar is an emerging field at the intersection of quantum mechanics and radar technology that uses quantum phenomena and resources to enhance detection and enhance detection. With the principles of quantum mechanics, it can be shown that quantum radar has several major advantages over its classical counterpart, such as increased accuracy, detection sensitivity in noisy environments, and resistance to jamming. In this presentation, after introducing the classical radar and its challenges, we will introduce the quantum lighting protocol (single photon-Gaussian), how to implement microwave, how to measure and how to propagate in noisy environments. Also, the most important challenges and opportunities of this technology will be stated.