Bloch Siegert Physics in a Reconfigurable Photonic Binary Lattice
Abstract
The Bloch Siegert shift, a hallmark correction arising from counter-rotating interactions in driven two-level systems, has an exact counterpart in binary lattices under static forcing, where it governs resonant long-range tunneling between sites separated by odd lattice spacings. Here we report the first experimental realization of this correspondence using a 12 mode programmable photonic integrated circuit. By implementing a reconfigurable binary lattice with sub-percent control of on-site detuning, we observe coherent periodic jumps across four resonance orders and quantitatively verify the predicted period law over the full parameter space. The measured dynamics exhibit the extreme resonance sensitivity characteristic of Bloch Siegert physics and agree closely with the level-anticrossing picture of the semiclassical Rabi model. Exploiting the underlying parity structure, we further convert intrinsically bidirectional oscillations into cascaded unidirectional transport through adaptive sign reversal of the staggered potential, achieving fidelities exceeding 0.95 and 0.98 on the same hardware platform. Our results establish programmable photonic lattices as a scalable testbed for strongly driven quantum-optical phenomena and Floquet-engineered transport.
Versions
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BibTeX
@misc{xu2026bloch,
title = {{Bloch Siegert Physics in a Reconfigurable Photonic Binary Lattice}},
author = {Ze-Sheng Xu and Liwei Duan and Rohan Yadgirkar and Andrea Cataldo and Adrian Iovan and Jun Gao and Ali W. Elshaari},
howpublished = {arXiv},
year = {2026},
month = may,
doi = {10.48550/arxiv.2605.08875},
eprint = {2605.08875},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2605.08875},
}
RIS
TY - UNPB
TI - Bloch Siegert Physics in a Reconfigurable Photonic Binary Lattice
AU - Ze-Sheng Xu
AU - Liwei Duan
AU - Rohan Yadgirkar
AU - Andrea Cataldo
AU - Adrian Iovan
AU - Jun Gao
AU - Ali W. Elshaari
PY - 2026
DA - 2026/05/09
PB - arXiv
DO - 10.48550/arxiv.2605.08875
UR - https://arxiv.org/abs/2605.08875
AB - The Bloch Siegert shift, a hallmark correction arising from counter-rotating interactions in driven two-level systems, has an exact counterpart in binary lattices under static forcing, where it governs resonant long-range tunneling between sites separated by odd lattice spacings. Here we report the first experimental realization of this correspondence using a 12 mode programmable photonic integrated circuit. By implementing a reconfigurable binary lattice with sub-percent control of on-site detuning, we observe coherent periodic jumps across four resonance orders and quantitatively verify the predicted period law over the full parameter space. The measured dynamics exhibit the extreme resonance sensitivity characteristic of Bloch Siegert physics and agree closely with the level-anticrossing picture of the semiclassical Rabi model. Exploiting the underlying parity structure, we further convert intrinsically bidirectional oscillations into cascaded unidirectional transport through adaptive sign reversal of the staggered potential, achieving fidelities exceeding 0.95 and 0.98 on the same hardware platform. Our results establish programmable photonic lattices as a scalable testbed for strongly driven quantum-optical phenomena and Floquet-engineered transport.
ER -