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Marker Lecture: Ultrafast quantum control of single electron orbital and spin dynamics in diamond

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David Awschalom, University of Chicago
When
28 March 2014 from 11:00 AM to 12:00 PM
Where
320 Whitmore Laboratory
Contact Name
Contact Phone
814-863-0136
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 The nitrogen-vacancy (NV) center in diamond is an optically addressable, solid-state spin with promising applications in quantum information and sensing.  We present an all-optical pump-probe technique to independently study the orbital and spin dynamics of a single NV center.  Using ultrafast optical pulses with polarization selectivity, we investigate the coherent orbital dynamics of the NV center excited state that occur on nanosecond to femtosecond timescales.  In a similar manner, we also probe the excited state spin dynamics of the NV center and achieve rotations of the spin state on sub-nanosecond timescales. With this ultrafast pump-probe spectroscopy, we demonstrate arbitrary-axis spin rotations and controlled unitary evolution within the full spin-triplet manifold.  These techniques provide a time-domain probe to investigate Hamiltonian dynamics as well as a pathway toward integrating solid state spin qubits with photonic networks.

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