Scalable Spin Amplification with a Gain over a Hundred

Abstract

We propose a scalable and practical implementation of spin amplification which does not require individual addressing nor a specially tailored spin network. We have demonstrated a gain of 140 in a solid-state nuclear spin system of which the spin polarization has been increased to 0.12 using dynamic nuclear polarization with photoexcited triplet electron spins. Spin amplification scalable to a higher gain opens the door to the single spin measurement for a readout of quantum computers as well as practical applications of nuclear magnetic resonance (NMR) spectroscopy to infinitesimal samples which have been concealed by thermal noise.

6 pages, 7 figures

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• Entanglement Assisted Metrology
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Cited by in corpus (5)

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• Hybrid quantum magnetic field sensor with an electron spin and a nuclear spin in diamond
• Ancilla Induced Amplification of Quantum Fisher Information
• Design method of dynamical decoupling sequences integrated with optimal control theory
• Spin Amplification with Inhomogeneous Broadening