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Enhanced Quantum State Transfer via Feedforward Cancellation of Optical Phase Noise.

Maddox, Benjamin P; Mortlock, Jonathan M; Hepworth, Tom R; Raghuram, Adarsh P; Gregory, Philip D; Guttridge, Alexander; Cornish, Simon L

Enhanced Quantum State Transfer via Feedforward Cancellation of Optical Phase Noise. Thumbnail


Authors

Tom Hepworth tom.hepworth@durham.ac.uk
PGR Student Doctor of Philosophy

Profile image of Adarsh Raghuram

Adarsh Raghuram adarsh.p.raghuram@durham.ac.uk
PGR Student Doctor of Philosophy

Dr Phil Gregory p.d.gregory@durham.ac.uk
Assistant Professor - Royal Society University Research Fellow



Abstract

Many experimental platforms for quantum science depend on state control via laser fields. Frequently, however, the control fidelity is limited by optical phase noise. This is exacerbated in stabilized laser systems where high-frequency phase noise is an unavoidable consequence of feedback. Here we implement an optical feedforward technique to suppress laser phase noise in the stimulated Raman adiabatic passage state transfer of ultracold RbCs molecules, across 114 THz, from a weakly bound Feshbach state to the rovibrational ground state. By performing over 100 state transfers on single molecules, we measure a significantly enhanced transfer efficiency of 98.7(1)% limited only by available laser intensity.

Citation

Maddox, B. P., Mortlock, J. M., Hepworth, T. R., Raghuram, A. P., Gregory, P. D., Guttridge, A., & Cornish, S. L. (2024). Enhanced Quantum State Transfer via Feedforward Cancellation of Optical Phase Noise. Physical Review Letters, 133(25), Article 253202. https://doi.org/10.1103/PhysRevLett.133.253202

Journal Article Type Article
Acceptance Date Nov 18, 2024
Online Publication Date Dec 18, 2024
Publication Date 2024-12
Deposit Date Jan 21, 2025
Publicly Available Date Jan 21, 2025
Journal Physical review letters
Print ISSN 0031-9007
Electronic ISSN 1079-7114
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 133
Issue 25
Article Number 253202
DOI https://doi.org/10.1103/PhysRevLett.133.253202
Public URL https://durham-repository.worktribe.com/output/3341879

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