



@article {3073,
	title = {Candidate for a self-correcting quantum memory in two dimensions},
	year = {2022},
	month = {5/19/2022},
	abstract = {<p>An interesting problem in the field of quantum error correction involves finding a physical system that hosts a \&quot;self-correcting quantum memory,\&quot; defined as an encoded qubit coupled to an environment that naturally wants to correct errors. To date, a quantum memory stable against finite-temperature effects is only known in four spatial dimensions or higher. Here, we take a different approach to realize a stable quantum memory by relying on a driven-dissipative environment. We propose a new model which appears to self correct against both bit-flip and phase-flip errors in two dimensions: A square lattice composed of photonic \&quot;cat qubits\&quot; coupled via dissipative terms which tend to fix errors locally. Inspired by the presence of two distinct Z2-symmetry-broken phases, our scheme relies on Ising-like dissipators to protect against bit flips and on a driven-dissipative photonic environment to protect against phase flips.\&nbsp;</p>},
	url = {https://arxiv.org/abs/2205.09767},
	author = {Simon Lieu and Yu-Jie Liu and Alexey V. Gorshkov}
}
