Thursday Colloquium Reminder- Happening Today

Thu Feb 1 08:35:50 EST 2024

From: The Ohio State University Department of Physics <scopel.6 at osu.edu>
Sent: Thursday, February 1, 2024 8:33 AM
To: Scopel, Carly <scopel.6 at osu.edu>
Subject: Thursday Colloquium Reminder- Happening Today

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COLLEGE OF ARTS AND SCIENCES | DEPARTMENT OF PHYSICS

Happening Today-Spring 2024 Colloquium Series

Please join us at 11:00 AM for Colloquium with Dr. Han Zhao from the California Institute of Technology.

Bridging Microwave and Optical Quantum Worlds Using Nanomechanics

Abstract: Imparting quantum information from microwave onto optical frequencies and vice versa is an indispensable functionality in modern quantum technologies, underlying key breakthroughs towards the quantum version of Moore’s law. Gigahertz mechanical oscillations with the characteristic wavelength at the nanoscale couple strongly to both microwave and optical fields, hence provide the ideal intermediator that bridges the orders-of-magnitude frequency gap. This talk will showcase how properly engineered on-chip mechanical systems can be leveraged to address the outstanding challenges of quantum networking and scalable quantum computing. I will present our recent progress towards phonon-mediated quantum transduction that interconnects superconducting circuits using telecommunication-band photons. Owing to the ultra-long acoustic lifetime at millikelvin temperatures, this approach achieves percent-level transduction efficiency and sub-quanta added noise under continuous-wave optical pump, opening the door to a new era of speedup for generating long-range entanglements among distant superconducting quantum processors. Looking ahead, I will share the exciting prospect of utilizing such a transducer to build efficient quantum links across different quantum hardware systems for the "quantum Internet". The quantum coherence of photon-phonon interactions at the nanoscale also enables a unique optoelectronic interface for hybrid information processing. In the second part, I will demonstrate a cavity acousto-optic arithmetic unit that performs large-scale linear transformations in the frequency dimension of light. Equipped with unprecedented arithmetic parallelism, this prototype device marks a milestone towards a hardware-efficient integrated optical quantum computing framework harvesting the quantum advantages at room-temperature.

Faculty Host: Dan Gauthier
Location: 1080 Physics Research Building, Smith Seminar Room

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Join Us for the Colloquium and Reception
Event details:

  *   Speaker: Dr. Han Zhao
  *   Reception starts at 10:45 AM, Physics Research Building Atrium
  *   Colloquium 11:00 AM- 12:00 PM, 1080 Physics Research Building
Refreshments will be provided at 10:45 AM.

[Photo of exterior of Smith Seminar Room, Physics 1080. (Location of Colloquium and Reception.)]

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