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APMS Colloquium

Thursday, May 1, 9:45-10:45 am

Prof. Christian Arenz
Arizona State Univ.

Speeding Up Quantum Dynamics Through Parametric Control

Abstract: Strong interactions between the components of a quantum system are critical for leveraging quantum effects for quantum technologies. In this talk, I present a protocol to enhance such interactions through control, thereby speeding up the system’s evolution without knowing parameter details. I first show that while this is impossible for systems with finitely many degrees of freedom, interactions involving quantum harmonic oscillators can generically be enhanced through local parametric control of high frequency. I go on to discuss phase insensitive amplification of displacements, enhancing Jaynes-Cumming type interactions, and speeding up the implementation of quantum logic gates as potential applications of the presented control strategy. Finally, I report the experimental realization of the protocol in an ion trap system and discuss further applications in photonic quantum computing.

Bio: Christian is currently an assistant professor in the School of Electrical, Computer and Energy Engineering at Arizona State University. Prior to joining ASU in 2022, he was a lecturer and an associate research scholar at Princeton University. He completed his PhD in applied mathematics at Aberystwyth University in 2016. He obtained his master’s degree equivalent in theoretical physics from Saarland University in 2012, where he studied quantum optical systems. Christian’s current research centers on using tools from control theory to advance quantum information science.

Liberal Arts Building (18), Room 201
Join Via Zoom: https://tinyurl.com/ColloqAPMSMIRA

Sponsored by:

• Center for Materials Interfaces in Research and Applications (¡MIRA!)
• Nanotechnology Collaborative Infrastructure Southwest (NCI-SW) and Arizona State University (ASU)

For more information please contact APMS at APMS@nau.edu