Volume 121, Number 5, March 2018
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||26 April 2018|
Non-Bloch decay of Rabi oscillations in liquid state NMR
Department of Physical Sciences, Indian Institute of Science Education and Research Kolkata Mohanpur - 741246, West Bengal, India
Received: 23 February 2018
Accepted: 29 March 2018
Rabi oscillations are known to exhibit non-Bloch behaviour in anisotropic media. In this letter, we report an experimental observation of non-Bloch decay of Rabi oscillations in isotropic liquid state NMR. To avoid the dephasing due to the radio-frequency inhomogeneities, we develop a modified version of the rotary echo protocol and use it to determine the decay rates of Rabi oscillations. We find that the measured decay rates are proportional to the square of the Rabi frequencies and the proportionality constant is of the order of tens of picoseconds. Further, we show that this non-Bloch nature of the decay rates becomes less prominent with increasing temperature. The implications of the presence of non-Bloch decay rates in liquid state NMR in the context of ensemble quantum computing are also discussed.
PACS: 74.25.N- – Response to electromagnetic fields / 67.30.hj – Spin dynamics / 67.30.er – Magnetic properties, NMR
© EPLA, 2018
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