A vapor-cavity-QED system for quantum computation and communication

• URL: http://arxiv.org/abs/2509.19432v1
• Date: Tue, 23 Sep 2025 18:00:01 GMT
• Title: A vapor-cavity-QED system for quantum computation and communication
• Authors: Sharoon Austin, Dhruv Devulapalli, Khoi Hoang, Feng Zhou, Kartik Srinivasan, Alexey V. Gorshkov,
• Abstract summary: We study scenarios where we can drive a Raman transition to generate photons with specific temporal shapes and to absorb, and hence detect, single photons.<n>The strong atom-cavity interaction can also be used to implement the atom-photon controlled-phase gate.
• Score: 3.594916434616971
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In this work, we propose performing key operations in quantum computation and communication using room-temperature atoms moving across a grid of high-quality-factor, small-mode-volume cavities. These cavities enable high-cooperativity interactions with single atoms to be achieved with a characteristic timescale much shorter than the atomic transit time, allowing multiple coherent operations to take place. We study scenarios where we can drive a Raman transition to generate photons with specific temporal shapes and to absorb, and hence detect, single photons. The strong atom-cavity interaction can also be used to implement the atom-photon controlled-phase gate, which can then be used to construct photon-photon gates, create photonic cluster states, and perform non-demolition detection of single photons. We provide numerics validating our methods and discuss the implications of our results for several applications.

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