Fisher information analysis on quantum-enhanced parameter estimation in electromagnetically-induced-transparency spectrum with single photons

Abstract

Electromagnetically-induced-transparency (EIT) spectroscopy has been used as a sensitive sensor in quantum metrology applications. The sensitivity of a sensor strongly depends on the measurement precision of EIT spectrum. In this work, we present a theoretical study of the spectral lineshape measurement on a three-level $\Lambda$-type EIT media based on Fisher information (FI) analysis. Using two kinds of probing source: the single-photon Fock state and the coherent state, we calculate the FI in an EIT medium and quantify the quantum advantage and limitations of the single-photon probe. The analysis of FI structure also provides a clear picture to classify the spectral lineshape into two different regimes, the EIT and Aulter-Townes splitting (ATS). This work provides a systematic analysis of the single-photon EIT spectrum, which provides essential knowledge of quantum sensing based on EIT and deepens our understanding of spectral characteristics of $\Lambda$-type media.

15 pages, 15 figures

References in corpus (12)

• Efficient quantum memory for single photon polarization qubits
• Giant electro-optic effect using polarizable dark states
• Optimal estimation of losses at the ultimate quantum limit with non-Gaussian states
• Determining the Angle-of-Arrival of an Radio-Frequency Source with a Rydberg Atom-Based Sensor
• Continuous-frequency weak electric field measurement with Rydberg atoms
• Large Fizeau's light-dragging effect in a moving electromagnetically induced transparent medium
• Simultaneous Multi-Band Demodulation Using a Rydberg Atomic Sensor
• Optimal Atomic Quantum Sensing using EIT Readout
• Electromagnetically induced transparency based Rydberg-atom sensor for quantum voltage measurements
• Quantum Advantage with Seeded Squeezed Light for Absorption Measurement
• Quantum fidelity of electromagnetically induced transparency: The full quantum theory
• Effect of laser frequency fluctuation on the decay rate of Rydberg coherence

Cited by in corpus (1)

• Topological Sensing in the Dynamics of Quantum Walks with Defects