IOptics Seminar by Physics Grad Student Trent Graham on Friday, March 4!

Please join us for the next iOptics seminar on Friday, 4th March at 12:00 PM in 3269 Beckman Institute. Trent Graham, graduate student in Prof. Paul Kwiat's lab in the Physics Department here at UIUC, is presenting on "Superdense Teleportation of Hyperentangled Photons on Earth and in Space".

Speaker: Trent Graham

Topic: Superdense Teleportation of Hyperentangled Photons on Earth and in Space

Date: Friday, 4th March 2016 Time: 12.00 PM - 1.00 PM

Location: 3269 Beckman Institute

Sponsors: OSA Student Chapter, SPIE Student Chapter, IEEE Photonics

Event type: Seminar

Abstract: The transfer of quantum states over long distances has long been a goal of quantum information science and is required for many important quantum communication and computing protocols. To address the problem of lossy, noisy channels, entanglement-enhanced state communication techniques such as quantum teleportation and remote state preparation have been developed, which allow two remote parties with shared entanglement to exchange quantum states using classical communication. However, these techniques require extensive experimental resources and complicated measurements to implement deterministically. In contrast, a new technique called Superdense Teleportation (SDT) can communicate quantum information deterministically with greatly reduced resources, simplified measurements, and decreased classical communication cost. These advantages make this protocol ideal for communicating quantum information for space applications.

I will present our previous experimental implementation of SDT using photons that are hyperentangled in polarization and orbital angular momentum. Our experimental results demonstrate that we can transmit photon states between remote parties at well above the classical limit; however, this implementation cannot be directly adapted for space application, since turbulence scrambles orbital angular momentum states.To address this issue, I will also present an SDT laboratory demonstration, which uses photons hyperentangled in polarization and temporal mode to communicate a special set of two-qubit, single-photon states between two remote parties. Leveraging the results of our prototype experiment and other space communication research, we will investigate the possibility of a satellite-to-Earth implementation.

Speaker Biography: Trent Graham graduated with a B.S. in Physics from the University of Illinois at Urbana-Champaign in 2009. He is currently a final year graduate student (also at the UIUC) working under Paul Kwiat in the department of Physics studying quantum communication using hyperentangled photons. Trent will begin a postdoctoral position with Mark Saffman at the University of Wisconsin-Madison in May 2016 studying quantum computing using Rydberg atoms.

As always lunch will be served after the seminar.