TY - JOUR
T1 - Frequency Superresolution with Spectrotemporal Shaping of Photons
AU - Shah, Manav
AU - Fan, Linran
N1 - Funding Information:
This work is supported by Office of Naval Research (Grant No. N00014-19-1-2190), and National Science Foundation (Grants No. ECCS-1842559 and No. CCF-1907918).
Publisher Copyright:
© 2021 American Physical Society.
PY - 2021/3
Y1 - 2021/3
N2 - Quantum sensing and metrology promise useful insights and alternative techniques to surpass the measurement limits of a classical framework. Significant improvement has been made in the areas of imaging, positioning, timing, interferometry, communication, and information processing through quantum detection and estimation techniques. In this Letter, we focus on the application of quantum information for spectral measurements. Specifically, we study the quantum limit to resolve two spectral modes with small frequency separation. We show that frequency superresolution can be achieved with spectrotemporal shaping of input fields before detection. Through a numerical optimization algorithm, we design the apparatus for spectrotemporal shaping based on phase modulation and dispersion engineering. This scheme can achieve performance close to the quantum limit with minimum resources, showing the robustness for experimental implementation and real-world applications.
AB - Quantum sensing and metrology promise useful insights and alternative techniques to surpass the measurement limits of a classical framework. Significant improvement has been made in the areas of imaging, positioning, timing, interferometry, communication, and information processing through quantum detection and estimation techniques. In this Letter, we focus on the application of quantum information for spectral measurements. Specifically, we study the quantum limit to resolve two spectral modes with small frequency separation. We show that frequency superresolution can be achieved with spectrotemporal shaping of input fields before detection. Through a numerical optimization algorithm, we design the apparatus for spectrotemporal shaping based on phase modulation and dispersion engineering. This scheme can achieve performance close to the quantum limit with minimum resources, showing the robustness for experimental implementation and real-world applications.
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U2 - 10.1103/PhysRevApplied.15.034071
DO - 10.1103/PhysRevApplied.15.034071
M3 - Article
AN - SCOPUS:85103437100
SN - 2331-7019
VL - 15
JO - Physical Review Applied
JF - Physical Review Applied
IS - 3
M1 - 034071
ER -