发信人: PRL (EOT), 信区: D_Materials
标 题: 恭喜姜校顺老师的nature子刊上线
发信站: 南京大学小百合站 (Tue Jun 24 13:16:04 2014)
我现代工学院2014年第一篇natuer子刊终于上线了。
基于有源-无源光学微腔耦合系统的宇称时间对称与光学隔离
一作是11级常龙学长，指导老师是姜校顺老师。
特此祝贺，并附上链接与摘要：
http://www.nature.com/nphoton/journal/vaop/ncurrent/full/nphoton.2014.133.html
Compound-photonic structures with gain and loss1 provide a powerful platform
for testing various theoretical proposals on non-Hermitian parity–time-
symmetric quantum mechanics2, 3, 4, 5 and initiate new possibilities for
shaping optical beams and pulses beyond conservative structures. Such
structures can be designed as optical analogues of complex parity–time-
symmetric potentials with real spectra. However, the beam dynamics can exhibit
unique features distinct from conservative systems due to non-trivial wave
interference and phase-transition effects. Here, we experimentally realize
parity–time-symmetric optics on a chip at the 1,550 nm wavelength in two
directly coupled high-Q silica-microtoroid resonators with balanced effective
gain and loss. With this composite system, we further implement switchable
optical isolation with a non-reciprocal isolation ratio from −8 dB to +8 dB,
by breaking time-reversal symmetry with gain-saturated nonlinearity in a large
parameter-tunable space. Of importance, our scheme opens a door towards
synthesizing novel microscale photonic structures for potential applications
in optical isolators, on-chip light control and optical communications.
--
※ 来源:．南京大学小百合站 http://bbs.nju.edu.cn [FROM: 210.28.140.242]
标 题: 恭喜姜校顺老师的nature子刊上线
发信站: 南京大学小百合站 (Tue Jun 24 13:16:04 2014)
我现代工学院2014年第一篇natuer子刊终于上线了。
基于有源-无源光学微腔耦合系统的宇称时间对称与光学隔离
一作是11级常龙学长，指导老师是姜校顺老师。
特此祝贺，并附上链接与摘要：
http://www.nature.com/nphoton/journal/vaop/ncurrent/full/nphoton.2014.133.html
Compound-photonic structures with gain and loss1 provide a powerful platform
for testing various theoretical proposals on non-Hermitian parity–time-
symmetric quantum mechanics2, 3, 4, 5 and initiate new possibilities for
shaping optical beams and pulses beyond conservative structures. Such
structures can be designed as optical analogues of complex parity–time-
symmetric potentials with real spectra. However, the beam dynamics can exhibit
unique features distinct from conservative systems due to non-trivial wave
interference and phase-transition effects. Here, we experimentally realize
parity–time-symmetric optics on a chip at the 1,550 nm wavelength in two
directly coupled high-Q silica-microtoroid resonators with balanced effective
gain and loss. With this composite system, we further implement switchable
optical isolation with a non-reciprocal isolation ratio from −8 dB to +8 dB,
by breaking time-reversal symmetry with gain-saturated nonlinearity in a large
parameter-tunable space. Of importance, our scheme opens a door towards
synthesizing novel microscale photonic structures for potential applications
in optical isolators, on-chip light control and optical communications.
--
※ 来源:．南京大学小百合站 http://bbs.nju.edu.cn [FROM: 210.28.140.242]
No comments:
Post a Comment