Imaging the interface of a qubit and its quantum-many-body environment

• URL: http://arxiv.org/abs/2011.11022v3
• Date: Wed, 3 Nov 2021 04:53:58 GMT
• Title: Imaging the interface of a qubit and its quantum-many-body environment
• Authors: S. Rammohan, S. Tiwari, A. Mishra, A. Pendse, A. K. Chauhan, R. Nath, A. Eisfeld, and S. W\"uster
• Abstract summary: We show theoretically that for a Rydberg qubit in a Bose condensed environment, experiments can image the system-environment interface that is central for decoherence. High precision absorption images of the condensed environment will be able to capture transient signals that show the real time build up of a mesoscopic entangled state in the environment.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Decoherence affects all quantum systems, natural or artificial, and is the primary obstacle impeding quantum technologies. We show theoretically that for a Rydberg qubit in a Bose condensed environment, experiments can image the system-environment interface that is central for decoherence. High precision absorption images of the condensed environment will be able to capture transient signals that show the real time build up of a mesoscopic entangled state in the environment. This is possible before decoherence sources other than the condensate itself can kick in, since qubit decoherence time-scales can be tuned from the order of nanoseconds to microseconds by choice of the excited Rydberg principal quantum number {\nu}. Imaging the interface will allow detailed explorations of open quantum system concepts and may offer guidance for coherence protection in challenging scenarios with non-Markovian environments.

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