A hybrid quantum architecture was proposed to engineer a localization-delocalization phase transition of light in a two-dimension square lattices of superconducting coplanar waveguide resonators,which are interconnect...A hybrid quantum architecture was proposed to engineer a localization-delocalization phase transition of light in a two-dimension square lattices of superconducting coplanar waveguide resonators,which are interconnected by current-biased Josephson junction phase qubits.We find that the competition between the on-site repulsion and the nonlocal photonic hopping leads to the Mott insulator-superfluid transition.By using the mean-field approach and the quantum master equation,the phase boundary between these two different phases could be obtained when the dissipative effects of superconducting resonators and phase qubit are considered.The good tunability of the effective on-site repulsion and photon-hopping strengths enable quantum simulation on condensed matter physics and many-body models using such a superconducting resonator lattice system.The experimental feasibility is discussed using the currently available technology in the circuit QED.展开更多
Nonlinear Cherenkov radiation(NCR),an intriguing noncollinear second harmonic generation process satisfying versatile longitudinal phase matching and its diffraction in space,has been realized in periodically poled li...Nonlinear Cherenkov radiation(NCR),an intriguing noncollinear second harmonic generation process satisfying versatile longitudinal phase matching and its diffraction in space,has been realized in periodically poled lithium niobate(PPLN)nonlinear grating and other engineered nonlinear photonic structures.Here,we report on the observation of unprecedented ultrabroadband NCR(with a 1.3-octave bandwidth ranging from 363 to 900 nm)from a single PPLN nonlinear grating plate driven by a high-peak-power ultrashort femtosecond pump white laser that covers 2.2-octave bandwidth ranging from 400 to 1,850 nm and possesses a maximum pulse energy of 1.7mJ.Multiple colored NCR patterns along the direction of Cherenkov conical angles simultaneously appear and superimpose in space,leading to a beautifully colorful red-violet rainbow picture dispersed in space clearly observable by the naked eye that has never been reported before.The experiments would enrich the basic physical and optical understanding of nonlinear optical interaction and diffraction characteristics of ultrabroadband high-peak-power white laser sources with engineered nonlinear microstructures.展开更多
基金supported by the National Science Foundation of China(Grant Nos.11372122,10874122 and 11074070)the Program for Excellent Talents at the University of Guangdong Province(Guangdong Teacher Letter[1010]No.79)
文摘A hybrid quantum architecture was proposed to engineer a localization-delocalization phase transition of light in a two-dimension square lattices of superconducting coplanar waveguide resonators,which are interconnected by current-biased Josephson junction phase qubits.We find that the competition between the on-site repulsion and the nonlocal photonic hopping leads to the Mott insulator-superfluid transition.By using the mean-field approach and the quantum master equation,the phase boundary between these two different phases could be obtained when the dissipative effects of superconducting resonators and phase qubit are considered.The good tunability of the effective on-site repulsion and photon-hopping strengths enable quantum simulation on condensed matter physics and many-body models using such a superconducting resonator lattice system.The experimental feasibility is discussed using the currently available technology in the circuit QED.
基金supported by the Science and Technology Project of Guangdong(2020B010190001)the National Natural Science Foundation of China(12434016)+1 种基金the National Key R&D Program of China(2023YFA1406900)the National Funded Postdoctoral Researcher Program(GZB20240785).
文摘Nonlinear Cherenkov radiation(NCR),an intriguing noncollinear second harmonic generation process satisfying versatile longitudinal phase matching and its diffraction in space,has been realized in periodically poled lithium niobate(PPLN)nonlinear grating and other engineered nonlinear photonic structures.Here,we report on the observation of unprecedented ultrabroadband NCR(with a 1.3-octave bandwidth ranging from 363 to 900 nm)from a single PPLN nonlinear grating plate driven by a high-peak-power ultrashort femtosecond pump white laser that covers 2.2-octave bandwidth ranging from 400 to 1,850 nm and possesses a maximum pulse energy of 1.7mJ.Multiple colored NCR patterns along the direction of Cherenkov conical angles simultaneously appear and superimpose in space,leading to a beautifully colorful red-violet rainbow picture dispersed in space clearly observable by the naked eye that has never been reported before.The experiments would enrich the basic physical and optical understanding of nonlinear optical interaction and diffraction characteristics of ultrabroadband high-peak-power white laser sources with engineered nonlinear microstructures.
