Quenching Spin Decoherence in Diamond through Spin Bath Polarization

2008/04/09 by Susumu Takahashi, Ronald Hanson, Johan van Tol +3 · 3 citations
Engineering · Materials Science · Physics and Astronomy · #Diamond and Carbon-based Materials Research #Quantum and electron transport phenomena #Semiconductor materials and devices #cond-mat.mes-hall #quant-ph

paper · pdf · doi:10.1103/physrevlett.101.047601

5 pages and 3 figures

arxiv created 2008/04/09 · openalex publication_date 2008/07/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04

Abstract

We experimentally demonstrate that the decoherence of a spin by a spin bath can be completely eliminated by fully polarizing the spin bath. We use electron paramagnetic resonance at 240 GHz and 8 T to study the electron-spin coherence time T2 of nitrogen-vacancy centers and nitrogen impurities in diamond from room temperature down to 1.3 K. A sharp increase of T2 is observed below the Zeeman energy (11.5 K). The data are well described by a suppression of the flip-flop induced spin bath fluctuations due to thermal electron-spin polarization. T2 saturates at approximately 250 micros below 2 K, where the polarization of the electron-spin bath exceeds 99%.

Citations

• Restoring Coherence Lost to a Slow Interacting Mesoscopic Spin Bath
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