TY - JOUR
T1 - Experimental demonstration of optical Bloch oscillation in electromagnetically induced photonic lattices
AU - Zhang, Zhaoyang
AU - Ning, Shaohuan
AU - Zhong, Hua
AU - Belić, Milivoj R.
AU - Zhang, Yiqi
AU - Feng, Yuan
AU - Liang, Shun
AU - Zhang, Yanpeng
AU - Xiao, Min
N1 - Publisher Copyright:
© 2021
PY - 2022/5
Y1 - 2022/5
N2 - The optical Bloch oscillation (OBO) is an optical-quantum analogy effect that is significant for light field manipulations, such as light beam localization, oscillation and tunneling. As an intra-band oscillation, OBO was important for optical investigations in photonic lattices and atomic vapors over an extended period of time. However, OBO in reconfigurable platforms is still an open topic, even though tunability is highly desired in developing modern photonic techniques. Here we theoretically establish and experimentally demonstrate OBO in an electromagnetically induced photonic lattice with a ramping refractive index, established in a coherently-prepared three-level 85Rb atomic vapor under the electromagnetically induced transparency condition. This is achieved by interfering two coupling beams with Gaussian profiles and launching a probe beam that exhibits OBO within the resulting lattice. The induced reconfigurable photonic lattice possesses a transverse gradient, due to the innate edges of Gaussian beams, and sets a new stage for guiding the flow of light in periodic photonic environments. Our results should motivate better understanding of peculiar physical properties of an intriguing quantum-optical analogy in an atomic setting.
AB - The optical Bloch oscillation (OBO) is an optical-quantum analogy effect that is significant for light field manipulations, such as light beam localization, oscillation and tunneling. As an intra-band oscillation, OBO was important for optical investigations in photonic lattices and atomic vapors over an extended period of time. However, OBO in reconfigurable platforms is still an open topic, even though tunability is highly desired in developing modern photonic techniques. Here we theoretically establish and experimentally demonstrate OBO in an electromagnetically induced photonic lattice with a ramping refractive index, established in a coherently-prepared three-level 85Rb atomic vapor under the electromagnetically induced transparency condition. This is achieved by interfering two coupling beams with Gaussian profiles and launching a probe beam that exhibits OBO within the resulting lattice. The induced reconfigurable photonic lattice possesses a transverse gradient, due to the innate edges of Gaussian beams, and sets a new stage for guiding the flow of light in periodic photonic environments. Our results should motivate better understanding of peculiar physical properties of an intriguing quantum-optical analogy in an atomic setting.
KW - Atomic coherence effect
KW - Beam dynamics
KW - Electromagnetically induced transparency
KW - Optical bloch oscillation
KW - Photonic lattice
UR - http://www.scopus.com/inward/record.url?scp=85119604990&partnerID=8YFLogxK
U2 - 10.1016/j.fmre.2021.08.019
DO - 10.1016/j.fmre.2021.08.019
M3 - Article
AN - SCOPUS:85119604990
SN - 2096-9457
VL - 2
SP - 401
EP - 404
JO - Fundamental Research
JF - Fundamental Research
IS - 3
ER -