[quantum-info] PIQuDos Seminar on Monday: Stephen Jordan

[Markus Mueller]

Dear all,

please join us on Monday at 4pm for a quantum information seminar by 
Stephen Jordan.


Title: *Classical and quantum circuit obfuscation with braids*
Speaker: *Stephen Jordan* (National Institute of Standards and 
Technology (NIST))

Abstract:
A circuit obfuscator is an algorithm that translates logic circuits into 
functionally-equivalent similarly-sized logic circuits that are hard to 
understand. While ad hoc obfuscators have been implemented, theoretical 
progress has mainly been limited to no-go results. In this work, we 
propose a new notion of circuit obfuscation, which we call partial 
indistinguishability. We then prove that, in contrast to previous 
definitions of obfuscation, partial indistinguishability obfuscation can 
be achieved by a polynomial-time algorithm. Specifically, our algorithm 
re-compiles the given circuit using a gate that satisfies the relations 
of the braid group, and then reduces to a braid normal form. Variants of 
our obfuscation algorithm can be applied to both classical and quantum 
circuits.

Date: Monday, April 8, 2013 - 4:00 pm
Location: Time Room (294)


Best,
Markus

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