Geometric Ramsey Interferometry with a Tripod Scheme
- URL: http://arxiv.org/abs/2309.10192v2
- Date: Thu, 16 May 2024 07:46:25 GMT
- Title: Geometric Ramsey Interferometry with a Tripod Scheme
- Authors: Chetan Sriram Madasu, Ketan Damji Rathod, Chang Chi Kwong, David Wilkowski,
- Abstract summary: Ramsey interferometry is a key technique for precision spectroscopy and to probe the coherence of quantum systems.
Here, we explore a different type of Ramsey interferometer where we perform quantum state manipulations by geometrical means.
This study opens the door for more robust interferometers operating on multiple input-output ports.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Ramsey interferometry is a key technique for precision spectroscopy and to probe the coherence of quantum systems. Typically, an interferometer is constructed using two quantum states and involves a time-dependent interaction with two short resonant electromagnetic pulses. Here, we explore a different type of Ramsey interferometer where we perform quantum state manipulations by geometrical means, eliminating the temporal dependence of the interaction. We use a resonant tripod scheme in ultracold strontium atoms where the interferometric operation is restricted to a two-dimensional dark-state subspace in the dressed-state picture. The observed interferometric phase accumulation is due to an effective geometric scalar term in the dark-state subspace, which remarkably does not vanish during the free evolution time when the light-matter interaction is turned off. This study opens the door for more robust interferometers operating on multiple input-output ports.
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