Quantum memories based on engineered dissipation

By Fernando Pastawski, Lucas Clemente, J. I. Cirac. 2010

137 citations recorded by the source corpus.

Storing quantum information for long times without disruptions is a major requirement for most quantum information technologies. A very appealing approach is to use self-correcting Hamiltonians, that is tailoring local interactions among the qubits such that when the system is weakly coupled to a cold bath the thermalization process takes a long time. Here we propose an alternative but more powerful approach in which the coupling to a bath is engineered, so that dissipation protects the encoded qubit against more general kinds of errors. We show that the method can be implemented locally in four-dimensional lattice geometries by means of a toric code and propose a simple two-dimensional setup for proof-of-principle experiments.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/8fa6614cea94515e9c9fcbdbb0348fbbdb9eb0c4

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Quantum trajectories and open many-body quantum systems (2014, background): “Such effects can also be used to manipulate or protect states in quantum computations [125, 126] and quantum memories [127], as well as to prepare entangled states dissipatively [128–130], or realise specific quantum gates for group-II atoms [131, 132].”
Driven-dissipative preparation of entangled states in cascaded quantum-optical networks (2011, background): “In this context, it has been realized that quantum reservoir engineering allows one to dissipatively prepare interesting many body states [12, 13, 14, 15, 16], perform universal quantum computation [14], realize a dissipative quantum repeater [17], or a dissipatively protected quantum memory [18].”
Engineered Open Systems and Quantum Simulations with Atoms and Ions (2012, background): “, 2009) and memories (Pastawski et al., 2011), as well as topological quantum computation (Nayak et al.”