Embedding of Time-Delayed Quantum Feedback in a Nonreciprocal Array
- URL: http://arxiv.org/abs/2204.02367v1
- Date: Tue, 5 Apr 2022 17:18:00 GMT
- Title: Embedding of Time-Delayed Quantum Feedback in a Nonreciprocal Array
- Authors: Xin H. H. Zhang, S. H. L. Klapp, A. Metelmann
- Abstract summary: Time-delayed quantum feedback is a fast and efficient method to control and stabilize few and many-body quantum systems.
Here, we present a method of encoding time-delayed quantum feedback into a chain of nonreciprocally coupled auxiliary oscillators.
Our approach serves as a novel method of introducing time-delayed quantum feedback and provides the advantage of large tunability.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Time-delayed quantum feedback is a fast and efficient method to control and
stabilize few and many-body quantum systems. However, a proper understanding of
such systems stays opaque due to the non-Markovian nature of the feedback
protocol. Here, we present a method of encoding time-delayed quantum feedback
into a chain of nonreciprocally coupled auxiliary oscillators. Our approach
serves as a novel method of introducing time-delayed quantum feedback and
provides the advantage of large tunability. Importantly, within our approach
the original non-Markovian system is embedded into an enlarged Markovian open
quantum system, which can be treated efficiently with quantum many-body
methods. As an exemplary illustration, we apply our Markovian embedding
approach to the paradigmatic case of a driven-dissipative atom in front of a
mirror.
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