Fast, low-loss, all-optical phase modulation in warm rubidium vapour
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Low-loss high-speed switches are an integral component of future photonic quantum technologies,
with applications in state generation, multiplexing, and the implementation of quantum gates. Phase modulation is one method of achieving this switching; however, existing optical phase modulators offer either high bandwidth or low loss—not both. We demonstrate fast (100MHz
bandwidth), low-loss (83(2)% transmission) phase shifting (∆ϕ = (0.90(5))π) in a signal field, induced by a control field, and mediated by the two-photon 5S1/2 → 5P3/2 → 5D5/2 transition in 87Rb vapour. The all-optical nature of the scheme circumvents restrictions of electronic phase
modulators, where bandwidth and repetition rate can be limited by the requirement to rapidly modulate high voltages. We discuss routes to enhance both performance and scalability for application to a range of quantum and classical technologies.
with applications in state generation, multiplexing, and the implementation of quantum gates. Phase modulation is one method of achieving this switching; however, existing optical phase modulators offer either high bandwidth or low loss—not both. We demonstrate fast (100MHz
bandwidth), low-loss (83(2)% transmission) phase shifting (∆ϕ = (0.90(5))π) in a signal field, induced by a control field, and mediated by the two-photon 5S1/2 → 5P3/2 → 5D5/2 transition in 87Rb vapour. The all-optical nature of the scheme circumvents restrictions of electronic phase
modulators, where bandwidth and repetition rate can be limited by the requirement to rapidly modulate high voltages. We discuss routes to enhance both performance and scalability for application to a range of quantum and classical technologies.
Date Issued
2025-04-01
Date Acceptance
2024-12-16
Citation
Quantum Science and Technology, 2025, 10 (2)
ISSN
2058-9565
Publisher
IOP Publishing
Journal / Book Title
Quantum Science and Technology
Volume
10
Issue
2
Copyright Statement
©2025 The Author(s). Published by IOP Publishing Ltd Original Content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI
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Subjects
GENERATION
MEMORY
phase modulation
photonic quantum computing
Physical Sciences
Physics
Physics, Multidisciplinary
quantum optics
Quantum Science & Technology
Science & Technology
Publication Status
Published
Article Number
025001
Date Publish Online
2025-01-09