Guangzhen Li
Shanghai Jiao Tong University
Photon upconversionSpace (mathematics)OpticsPhysicsSlow lightNonlinear systemPhotonSum-frequency generationQuantum informationQuasi-phase-matchingKerr effectDispersion (optics)Pockels effectMaterials scienceQubitPhotonicsPhotonic integrated circuitLithium niobateLattice (module)CloakLight intensityComputational physicsSecond-harmonic generationOptoelectronicsBroadbandElectric fieldWavelengthQuantum opticsBandwidth (signal processing)Photonic crystalTransmission (telecommunications)Coherence (physics)Phase modulationContinuous wave
17Publications
6H-index
94Citations
Publications 22
Newest
#1Danying Yu (SJTU: Shanghai Jiao Tong University)H-Index: 2
#2Guangzhen Li (SJTU: Shanghai Jiao Tong University)H-Index: 6
Last. Xianfeng ChenH-Index: 30
view all 7 authors...
Photonic honeycomb lattices have attracted broad interests for their fruitful ways in manipulating light, which yet hold difficulties in achieving arbitrary reconfigurability and hence flexible functionality due to fixed geometry configurations. Here we theoretically propose to construct the honeycomb lattice in a one-dimensional ring array under dynamic modulations, with an additional synthetic dimension created by connecting the frequency degree of freedom of light. Such a system is highly re-...
Source
#2Luojia WangH-Index: 1
Last. Xianfeng ChenH-Index: 30
view all 9 authors...
In physics, synthetic dimensions trigger great interest to manipulate light in different ways, while in technology, lithium niobate shows important capability towards on-chip applications. Here, based on the state-of-art technology, we propose and study a theoretical model of dynamically-modulated waveguide arrays with the Su-Schrieffer-Heeger configuration in the spatial dimension. The propagation of light through the one-dimensional waveguide arrays mimics time evolution of field in a syntheti...
#1Guangzhen LiH-Index: 6
#2Luojia WangH-Index: 1
Last. Xianfeng ChenH-Index: 30
view all 7 authors...
Constructions of synthetic lattices in photonics attract growingly attentions for exploring interesting physics beyond the geometric dimensionality, among which modulated ring resonator system has been proved as a powerful platform to create different kinds of connectivities between resonant modes along the synthetic frequency dimension with many theoretical proposals. Various experimental realizations are investigated in a single ring resonator, while building beyond simple synthetic lattices i...
#1Guangzhen LiH-Index: 6
#2Danying YuH-Index: 2
Last. Xianfeng ChenH-Index: 30
view all 4 authors...
Synthetic dimensions in photonic structures provide unique opportunities for actively manipulating light in multiple degrees of freedom. Here, we theoretically explore a dispersive waveguide under the dynamic phase modulation that supports single pulse manipulations in the synthetic (2+1) dimensions. Compared with the counterpart of the conventional (2+1) space-time, we explore temporal diffraction and frequency conversion in a synthetic time-frequency space while the pulse evolves along the spa...
1 Citations
#1Luqi Yuan (SJTU: Shanghai Jiao Tong University)H-Index: 23
#2Danying Yu (SJTU: Shanghai Jiao Tong University)H-Index: 2
Last. Xianfeng Chen (SJTU: Shanghai Jiao Tong University)H-Index: 30
view all 5 authors...
We explore the synthetic space with rings including GVD, where effective magnetic flux is constructed to manipulate photons. We find photons can be precisely controlled in two different designs even with the waveguide dispersion included.
Source
#1Guangzhen Li (SJTU: Shanghai Jiao Tong University)H-Index: 6
#2Yuanlin Zheng (SJTU: Shanghai Jiao Tong University)H-Index: 14
Last. Xianfeng Chen (SJTU: Shanghai Jiao Tong University)H-Index: 30
view all 0 authors...
We propose the experimentally dynamic band structure measurement, which exhibits the evolution of the wavevector along the synthetic dimension and simulates the momentum movement in the one-dimensional solid-state system under a constant force.
Source
#1Danying YuH-Index: 2
#2Guangzhen LiH-Index: 6
Last. Xianfeng ChenH-Index: 30
view all 7 authors...
A dynamically-modulated ring system with frequency as a synthetic dimension has been shown to be a powerful platform to do quantum simulation and explore novel optical phenomena. Here we propose synthetic honeycomb lattice in a one-dimensional ring array under dynamic modulations, with the extra dimension being the frequency of light. Such system is highly re-configurable with modulation. Various physical phenomena associated with graphene including Klein tunneling, valley-dependent edge states,...
#1Guangzhen Li (SJTU: Shanghai Jiao Tong University)H-Index: 6
#2Yuanlin Zheng (SJTU: Shanghai Jiao Tong University)H-Index: 14
Last. Xianfeng Chen (SDNU: Shandong Normal University)H-Index: 30
view all 9 authors...
Band structure theory plays an essential role in exploring physics in both solid-state systems and photonics. Here, we demonstrate a direct experimental measurement of the dynamic band structure in a synthetic space including the frequency axis of light, realized in a ring resonator under near-resonant dynamic modulation. This synthetic lattice exhibits the physical picture of the evolution of the wave vector reciprocal to the frequency axis in the band structure, analogous to a one-dimensional ...
16 CitationsSource
#1Yi'an LiuH-Index: 4
#2Yuping ChenH-Index: 26
Last. Xianfeng ChenH-Index: 30
view all 6 authors...
Temporal cloaks have inspired the innovation of research on security and efficiency of quantum and fiber communications for concealing temporal events. The existing temporal cloaking approaches possessing ps ~ns cloaking windows employed the third-order nonlinearity mostly. Here we explore a temporal cloak for perpetually concealing pulse events using high efficiency second-order nonlinearity. A temporal pulse event was cloaked as a continuous wave with constant intensity and restored by polariz...
#1Licheng Ge (SJTU: Shanghai Jiao Tong University)H-Index: 3
#2Yuping Chen (SJTU: Shanghai Jiao Tong University)H-Index: 3
Last. Xianfeng Chen (SJTU: Shanghai Jiao Tong University)H-Index: 30
view all 7 authors...
Future quantum information networks operated on telecom channels require qubit transfer between different wavelengths while preserving quantum coherence and entanglement. Qubit transfer is a nonlinear optical process, but currently the types of atoms used for quantum information processing and storage are limited by the narrow bandwidth of upconversion available. Here we present the first experimental demonstration of broadband and high-efficiency quasi-phase matching second-harmonic generation ...
15 CitationsSource