Towards dark space stabilization and manipulation in driven dissipative Majorana platforms

We propose driven dissipative Majorana platforms for the stabilization and manipulation of robust quantum states. For Majorana box setups, in the presence of environmental electromagnetic noise and with tunnel couplings to quantum dots, we show that the time evolution of the Majorana sector is gover...

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Bibliographic Details
Published in:Physical review. B 2020-10, Vol.102 (13), p.1, Article 134501
Main Authors: Gau, Matthias, Egger, Reinhold, Zazunov, Alex, Gefen, Yuval
Format: Article
Language:English
Subjects:
Couplings
Electromagnetic noise
Error correction
Fault tolerance
Quantum dots
Space stations
Stabilization
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Summary:We propose driven dissipative Majorana platforms for the stabilization and manipulation of robust quantum states. For Majorana box setups, in the presence of environmental electromagnetic noise and with tunnel couplings to quantum dots, we show that the time evolution of the Majorana sector is governed by a Lindblad master equation over a wide parameter regime. For the single-box case, arbitrary pure states ("dark states") can be stabilized by adjusting suitable gate voltages. For devices with two tunnel-coupled boxes, we outline how to engineer dark spaces, i.e., manifolds of degenerate dark states, and how to stabilize fault-tolerant Bell states. The proposed Majorana-based dark space platforms rely on the constructive interplay of topological protection mechanisms and the autonomous quantum error correction capabilities of engineered driven dissipative systems. Once a working Majorana platform becomes available, only standard hardware requirements are needed to implement our ideas.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.102.134501