Physics Seminar
Abstract:
What can parties achieve when they interact with one another using quantum information-resources, that is impossible classically?
I introduce a quantum information–theoretic primitive for determining a discrete-valued function that depends on multiple parties’ local private inputs.
The primitive permits the parties to mutually learn each others' local inputs, and thereby determine function values, while their individual systems remain independent of these inputs. The resulting function values are shared among the parties, but may remain information-theoretically hidden from any external observer, as well as from adversarial state-preparation or measurement processes within the quantum system, in every iteration.
In particular, while classically producing a shared function with these information-theoretic properties requires the use of private keys or hidden randomness, in the proposed setting it is achieved using entanglement alone -- permitting a quantum computational capability with no classical counterpart.
I'll discuss the primitive's general properties and applications across a broad range of secure quantum communication and computation settings including; quantum key distribution, multi-party coordination and decision schemes, function evaluation, and in some settings, protocols for fairly generated private coins.
Biography:
Olivia Hartzell is an independent researcher working at the intersection of quantum information, communication, and quantum games. Her work explores how quantum-mediated interactions depart from classical counterparts. She holds a PhD from Harvard University, where her research focused on structural estimation of game-theoretic models and mechanism design.
Note:
All PHY Graduate Students are encouraged to attend.
SENG 201
Dr. David Kagan
dkagan@umassd.edu
https://umassd.zoom.us/j/95920189607?pwd=TmaJGJewZfTdMpIsrBYl1WpEwI9hbM.1