Whispering gallery mode resonators(WGMRs)have proven their advantages in terms of sensitivity and precision in various sensing applications.However,when high precision is pursued,the WGMR demands a high-quality factor...Whispering gallery mode resonators(WGMRs)have proven their advantages in terms of sensitivity and precision in various sensing applications.However,when high precision is pursued,the WGMR demands a high-quality factor usually at the cost of its free spectral range(FSR)and corresponding measurement range.In this article,we propose a high-resolution and wide-range temperature sensor based on chip-scale WGMRs,which utilizes a Si_(3)N_(4)ring resonator as the sensing element and a Mg F_(2)-based microcomb as a broadband frequency reference.By measuring the beatnote signal of the WGM and microcomb,the ultra-high resolution of 58 micro-Kelvin(μK)was obtained.To ensure high resolution and broad range simultaneously,we propose an ambiguity-resolving method based on the gradient of feedback voltage and combine it with a frequency-locking technique.In a proof-of-concept experiment,a wide measurement range of 45 K was demonstrated.Our soliton comb-assisted temperature measurement method offers high-resolution and wide-range capabilities,with promising advancements in various sensing applications.展开更多
As a potential candidate for quantum computation and metrology,the nitrogen vacancy(NV)center in diamond presents both challenges and opportunities resulting from charge-state conversion.By utilizing different lasers ...As a potential candidate for quantum computation and metrology,the nitrogen vacancy(NV)center in diamond presents both challenges and opportunities resulting from charge-state conversion.By utilizing different lasers for the photon-induced charge-state conversion,we achieved subdiffraction charge-state manipulation.The charge-state depletion(CSD)microscopy resolution was improved to 4.1 nm by optimizing the laser pulse sequences.Subsequently,the electron spin-state dynamics of adjacent NV centers were selectively detected via the CSD.The experimental results demonstrated that the CSD can improve the spatial resolution of the measurement of NV centers for nanoscale sensing and quantum information.展开更多
This paper discusses the developement and investigation of a silica microbubble resonator(MBR) that is optimized to cancel mode dispersion with material dispersion, at a wavelength of approximately 1550 nm and maintai...This paper discusses the developement and investigation of a silica microbubble resonator(MBR) that is optimized to cancel mode dispersion with material dispersion, at a wavelength of approximately 1550 nm and maintain a quality factor of an optical mode as large as 5.4 × 10~7. Benefitting from the near-zero dispersion and high quality factor, a primary optical comb is generated in the MBR using cascaded four-wave mixing processes, which span over 300 nm with several tens of teeth. Furthermore, the frequency comb could be gradually tuned by mechanically stretching the MBR. This tunable Kerr comb has multiple potential applications in precision measurements and sensing applications, such as molecular spectroscopy and ranging.展开更多
Recently,optomechanical systems have emerged as promising platforms to perform quantum information processing .There has been considerable progress in the control of solid-state phonons at the quantum level,including ...Recently,optomechanical systems have emerged as promising platforms to perform quantum information processing .There has been considerable progress in the control of solid-state phonons at the quantum level,including the ground state cooling ,the generation of quantum correlated states between radiation fields and mechanical motion ,and mechanical squeezing . A unique feature of the optomechanical systems is the interconversion between stationary and flying (photonic)qubits.Mechanical motion can serve as a universal transducer to mediate the long-range interactions between stationary quantum systems, including trapped ions,superconducting circuits,single charges,and spins in diamond or silicon ,enabling the construction of a hybrid quantum network that combines the otherwise incompatible degrees of the freedom of different physical systems.展开更多
基金National Key Research and Development Program of China(2022YFF0608304)National Natural Science Foundation of China(62075206,62205324)。
文摘Whispering gallery mode resonators(WGMRs)have proven their advantages in terms of sensitivity and precision in various sensing applications.However,when high precision is pursued,the WGMR demands a high-quality factor usually at the cost of its free spectral range(FSR)and corresponding measurement range.In this article,we propose a high-resolution and wide-range temperature sensor based on chip-scale WGMRs,which utilizes a Si_(3)N_(4)ring resonator as the sensing element and a Mg F_(2)-based microcomb as a broadband frequency reference.By measuring the beatnote signal of the WGM and microcomb,the ultra-high resolution of 58 micro-Kelvin(μK)was obtained.To ensure high resolution and broad range simultaneously,we propose an ambiguity-resolving method based on the gradient of feedback voltage and combine it with a frequency-locking technique.In a proof-of-concept experiment,a wide measurement range of 45 K was demonstrated.Our soliton comb-assisted temperature measurement method offers high-resolution and wide-range capabilities,with promising advancements in various sensing applications.
基金This study was financially supported by the National Basic Research Program of China(Grant No.2011CB921200)the Knowledge Innovation Project of Chinese Academy of Sciences(Grant No.60921091)+3 种基金the National Natural Science Foundation of China(Grant No.11374290)the Program for New Century Excellent Talents in Universitythe Fundamental Research Funds for the Central Universitiesthe Foundation for the Author of National Excellent Doctoral Dissertation of China.
文摘As a potential candidate for quantum computation and metrology,the nitrogen vacancy(NV)center in diamond presents both challenges and opportunities resulting from charge-state conversion.By utilizing different lasers for the photon-induced charge-state conversion,we achieved subdiffraction charge-state manipulation.The charge-state depletion(CSD)microscopy resolution was improved to 4.1 nm by optimizing the laser pulse sequences.Subsequently,the electron spin-state dynamics of adjacent NV centers were selectively detected via the CSD.The experimental results demonstrated that the CSD can improve the spatial resolution of the measurement of NV centers for nanoscale sensing and quantum information.
基金supported by the National Key R&D Program of China(Grant No.2016YFA0301303)the Anhui Initiative in Quantum Information Technologies(Grant No.AHY130200)+2 种基金the National Natural Science Foundation of China(Grant Nos.11934012,61575184,and 11722436)the Fundamental Research Funds for the Central Universitiesthe Key Science and Technology Program of Henan Province,China(Grant No.182102410070)。
文摘This paper discusses the developement and investigation of a silica microbubble resonator(MBR) that is optimized to cancel mode dispersion with material dispersion, at a wavelength of approximately 1550 nm and maintain a quality factor of an optical mode as large as 5.4 × 10~7. Benefitting from the near-zero dispersion and high quality factor, a primary optical comb is generated in the MBR using cascaded four-wave mixing processes, which span over 300 nm with several tens of teeth. Furthermore, the frequency comb could be gradually tuned by mechanically stretching the MBR. This tunable Kerr comb has multiple potential applications in precision measurements and sensing applications, such as molecular spectroscopy and ranging.
文摘Recently,optomechanical systems have emerged as promising platforms to perform quantum information processing .There has been considerable progress in the control of solid-state phonons at the quantum level,including the ground state cooling ,the generation of quantum correlated states between radiation fields and mechanical motion ,and mechanical squeezing . A unique feature of the optomechanical systems is the interconversion between stationary and flying (photonic)qubits.Mechanical motion can serve as a universal transducer to mediate the long-range interactions between stationary quantum systems, including trapped ions,superconducting circuits,single charges,and spins in diamond or silicon ,enabling the construction of a hybrid quantum network that combines the otherwise incompatible degrees of the freedom of different physical systems.
