Optical amplification of spin noise spectroscopy via homodyne detection

Abstract

Spin noise (SN) spectroscopy measurements on delicate semiconductor spin systems, like single InGaAs quantum dots, are currently not limited by optical shot noise but rather by the electronic noise of the detection system. Here, we report a realization of homodyne SN spectroscopy enabling shot noise limited SN measurements. The proof-of-principle measurements on impurities in an isotopically enriched rubidium atom vapor show that homodyne SN spectroscopy can be utilized even in the low frequency spectrum which facilitates advanced semiconductor spin research like higher order SN measurements on spin qubits.

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Cited by in corpus (8)

• Increased sensitivity of spin noise spectroscopy using homodyne detection in $n$-doped GaAs
• Inter-species spin-noise correlations in hot atomic vapors
• Detection and amplification of spin noise using scattered laser light in a quantum-dot microcavity
• Collision-induced spin noise
• Simultaneous measurements of nuclear spin heat capacity, temperature and relaxation in GaAs microstructures
• Birefringence and dichroism effects in the spin noise spectra of a spin-1 system
• Random-time quantum measurements
• Nonlinear analog spintronics with van der Waals heterostructures