סמינר זה יחשב כסמינר שמיעה לתלמידי תואר שני--

Seminar on Wednesday, December 29, 2021 at 15:00-16:00

Room 207, Kitot Building

Controlling solid-state spins in photonic platforms for quantum technologies

By:

Speaker: Demitry Farfurnik / University of Maryland

Abstract

Optically-active spin systems in direct bandgap semiconductors are excellent sources of single and entangled photons, which positions them as promising building blocks of photonic quantum simulators and for the realization of quantum networks. To leverage the full potential of such spin systems often requires their coupling to photonic structures. Photonic structures can provide an efficient optical access to the spin, enhance photon emission rates, and generate strong spin-cavity coupling that introduces effective photon-photon interactions for quantum information processing.

In this talk, I will describe the experimental approaches for characterizing and optimizing the performance of spin systems based on optically-active quantum dots in photonic platforms. First, I will introduce the techniques for coherently controlling the quantum state of optically-active solid-state spins. I will then present the use of all-optical coherent control for performing noise spectroscopy of a single spin qubit. Such noise spectroscopy can evaluate the potential of spin qubits for quantum applications, thereby contributing to the development of qubits with long coherence times in noisy environments. Finally, I will describe the fabrication process of photonic structures that can couple to the spin, and procedures for optimizing such structures for quantum applications. The coupling of such photonic structures to optically-active spins could enable the realization of multipulse spin control sequences and the generation of controllable spin-photon entanglement for quantum information processing.

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Abstract:
Many issues related to human interaction and communication with AVs are still open. Many others will emerge as we encounter more frequent interactions that will take place outside of the laboratory. In this talk, I explore the interaction of pedestrians and AVs from the perspective of social behavior. Human behavior in social situations is often influenced by social bindings, which helps people make decisions and act, as they often do when a pedestrian and driver meets. In a set of survey and laboratory studies we aimed to explore how would the pedestrian-AV meetings would look like in the absence of a fellow human driver. We set to learn the pedestrians’ attitude, concerns, and expected behavior when interacting with AV; the acceptability of abusive and exploitative behavior to unmanned AVs, means of mitigation, and the actual effects on road crossing decisions. Through that work we seek to improve the design and coordination of pedestrians with AVs in future interactions. 

Bio:
Many issues related to human interaction and communication with AVs are still open. Many others will emerge as we encounter more frequent interactions that will take place outside of the laboratory. In this talk, I explore the interaction of pedestrians and AVs from the perspective of social behavior. Human behavior in social situations is often influenced by social bindings, which helps people make decisions and act, as they often do when a pedestrian and driver meets. In a set of survey and laboratory studies we aimed to explore how would the pedestrian-AV meetings would look like in the absence of a fellow human driver. We set to learn the pedestrians’ attitude, concerns, and expected behavior when interacting with AV; the acceptability of abusive and exploitative behavior to unmanned AVs, means of mitigation, and the actual effects on road crossing decisions. Through that work we seek to improve the design and coordination of pedestrians with AVs in future interactions. 

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