TY - GEN

T1 - Spin noise spectroscopy in semiconductors

T2 - Spintronics VII

AU - Hübner, Jens

AU - Dahbashi, Ramin

AU - Berski, Fabian

AU - Wiegand, Julia

AU - Kuhn, Hendrik

AU - Lonnemann, Jan

AU - Oestreich, Michael

PY - 2014/8/28

Y1 - 2014/8/28

N2 - Spin noise spectroscopy in semiconductors has matured during the past nine years into a versatile and well developed technique being capable to unveil the intrinsic and unaltered spin dynamics in a wide range of semiconductor systems. Originating from atom and quantum optics as a potential true quantum non-demolition measurement technique, SNS is capable of unearthing the intricate dynamics of free or localized electron and hole spins in semiconductors being eventually coupled to the nuclear spin bath as well. In this contribution, we review shortly the major steps which inspired the success of spin noise spectroscopy in semiconductors and present the most recent extensions into the low-invasive detection regime of the spin dynamics for the two extreme limits of very high and extremely low rates of spin decoherence, respectively. On the one hand, merging ultrafast laser spectroscopy with spin noise spectroscopy enables the detection of spin noise with picosecond resolution, i.e., with THz bandwidths yielding access to otherwise concealed microscopic electronic processes. On the other hand, we present very high sensitivity SNS being capable to measure the extremely long spin coherence of single holes enclosed in individual quantum dots venturing a step forward towards true optical quantum non-demolition experiments in semiconductors. In addition, higher-order spin noise statistics of, e.g., single charges can give information beyond the linear response regime governed by the fundamental fluctuation-dissipation theorem and thereby possibly shed some light on the nested coupling between electronic and nuclear spins.

AB - Spin noise spectroscopy in semiconductors has matured during the past nine years into a versatile and well developed technique being capable to unveil the intrinsic and unaltered spin dynamics in a wide range of semiconductor systems. Originating from atom and quantum optics as a potential true quantum non-demolition measurement technique, SNS is capable of unearthing the intricate dynamics of free or localized electron and hole spins in semiconductors being eventually coupled to the nuclear spin bath as well. In this contribution, we review shortly the major steps which inspired the success of spin noise spectroscopy in semiconductors and present the most recent extensions into the low-invasive detection regime of the spin dynamics for the two extreme limits of very high and extremely low rates of spin decoherence, respectively. On the one hand, merging ultrafast laser spectroscopy with spin noise spectroscopy enables the detection of spin noise with picosecond resolution, i.e., with THz bandwidths yielding access to otherwise concealed microscopic electronic processes. On the other hand, we present very high sensitivity SNS being capable to measure the extremely long spin coherence of single holes enclosed in individual quantum dots venturing a step forward towards true optical quantum non-demolition experiments in semiconductors. In addition, higher-order spin noise statistics of, e.g., single charges can give information beyond the linear response regime governed by the fundamental fluctuation-dissipation theorem and thereby possibly shed some light on the nested coupling between electronic and nuclear spins.

KW - Quantum dots

KW - Semiconductors

KW - Spin dynamic

KW - Spin noise spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=84923036770&partnerID=8YFLogxK

U2 - 10.1117/12.2061926

DO - 10.1117/12.2061926

M3 - Conference contribution

AN - SCOPUS:84923036770

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Spintronics VII

PB - SPIE

Y2 - 17 August 2014 through 21 August 2014

ER -