Program
Full Program | Thursday | Friday | Saturday | All Sessions | Posters | Talks
LSU SQuInT Event Map
SESSION 10: Quantum information theory II (Theatre)Chair: (Jonathan Dowling (Louisiana State)) | |
| 8:30am - 9:15am | Scott Aaronson, Texas, Austin Quantum supremacy | Abstract. In the near future, there will likely be special-purpose quantum computers with 40-50 high-quality qubits. In this talk, I'll discuss general theoretical foundations for how to use such devices to demonstrate "quantum supremacy": that is, a clear quantum speedup for *some* task, motivated by the goal of overturning the Extended Church-Turing Thesis (which says that all physical systems can be efficiently simulated by classical computers) as confidently as possible. |
| 9:15am - 9:45am | Leigh Norris, Dartmouth Spectroscopy of quantum and non-Gaussian noise | Abstract. Precisely characterizing the decoherence effects arising from coupling to a noisy environment is essential for designing optimized error correction strategies and validation protocols for realistic quantum information processors. This challenge has prompted much of the recent interest in quantum noise spectroscopy, which seeks to estimate the spectral properties of noise affecting a target quantum system. Despite considerable theoretical and experimental advances, this effort has largely been confined to the case of classical, Gaussian phase noise on a single qubit. We overcome these limitations by introducing quantum noise spectroscopy protocols for both quantum and non-Gaussian phase noise. For realistic systems that include a pair of excitons coupled to a phonon bath and a qubit undergoing quadratic dephasing at an optimal point, we numerically demonstrate reconstruction of the asymmetric spectra unique to quantum environments and the polyspectra associated with higher order cumulants of non-Gaussian noise. In both cases, spectral reconstructions enable us to accurately predict the dynamics of qubits coupled to these noise sources. In addition to the practical value in characterizing a larger class of noise processes, this work highlights dynamical and spectral signatures unique to quantum and non-Gaussian noise sources. |
SQuInT Chief Organizer
Akimasa Miyake, Assistant Professor
amiyake@unm.edu
SQuInT Co-Organizer
Mark M. Wilde, Assistant Professor LSU
mwilde@phys.lsu.edu
SQuInT Administrator
Gloria Cordova
gjcordo1@unm.edu
505 277-1850
SQuInT Event Coordinator
Karen Jones, LSU
kjones@cct.lsu.edu
SQuInT Founder
Ivan Deutsch, Regents' Professor
ideutsch@unm.edu
