Department of Physics & Astronomy
University of New Mexico

CQuIC Seminars

Photonic circuit for loss correction using Chi-2 bulk nonlinearities (and a new master equation)

Presented by Kurt Jacobs, Army Research Laboratory

I'll first briefly discuss a new, simple Lindblad master equation that handles weakly damped systems for all detunings between transitions. This fills the gap between the degenerate and non-degenerae master equations. Most of the talk will be devoted to a recent circuit that uses bulk Chi-2 nonlinearities to perform quantum error correction for photon loss using a two-mode bosonic code.

The talk is based on:

Accurate Lindblad-form master equation for weakly damped quantum systems across all regimes

G McCauley, B Cruikshank, DI Bondar, K Jacobs
npj Quantum Information 6 (1), 1-14

Room-Temperature Photonic Logical Qubits via Second-Order Nonlinearities
S Krastanov, M Heuck, JH Shapiro, P Narang, DR Englund, K Jacobs
arXiv preprint arXiv:2002.07193

3:30 pm, Thursday, October 22, 2020
CQuIC Zoom seminar

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A schedule of talks within the Department of Physics and Astronomy is available on the P&A web site at http://physics.unm.edu/pandaweb/events/index.php