Quantum-Enhanced Stimulated Brillouin Scattering Spectroscopy and Imaging

Abstract

Brillouin microscopy is an emerging label-free imaging technique to assess local viscoelastic properties. Quantum-enhanced stimulated Brillouin scattering is demonstrated for the first time using low power continuous-wave lasers at 795~nm. A signal to noise ratio enhancement of 3.4~dB is reported by using two-mode intensity-difference squeezed light generated with the four-wave mixing process in atomic rubidium vapor. The low optical power and the excitation wavelengths in the water transparency window has the potential to provide a powerful bio-imaging technique for probing mechanical properties of biological samples prone to phototoxicity and thermal effects. The performance enhancement affordable through the use of quantum light may pave the way for significantly improved sensitivity that cannot be achieved classically. The proposed new way of utilizing squeezed light for enhanced stimulated Brillouin scattering can be easily adapted for both spectroscopic and imaging applications in materials science and biology.

12 pages, 8 figures

References in corpus (5)

• Strong low-frequency quantum correlations from a four-wave mixing amplifier
• Stimulated generation of superluminal light pulses via four-wave mixing
• Quantum-Enhanced Two-Photon Spectroscopy Using Two-mode Squeezed Light
• Improved measurement of two-mode quantum correlations using a phase-sensitive amplifier
• Experimental study of decoherence of the two-mode squeezed vacuum state via second harmonic generation

Cited by in corpus (11)

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• Quantum Metrology of Absorption and Gain Parameters using Two-Mode Bright Squeezed Light
• Quantum advantage of time-reversed ancilla-based metrology of absorption parameters
• Enhancement in phase sensitivity in displacement-assisted SU(1,1) interferometer via photon recycling
• Recovery of Quantum Correlations using Machine Learning
• Mitigating scattering in a quantum system using only an integrating sphere
• Photon-resolved Floquet theory approach to spectroscopic quantum sensing