Optical switching of nuclear spin–spin couplings in semiconductors

Optical switching of nuclear spin–spin couplings in semiconductors

Two-qubit operation is an essential part of quantum computation. However, solid-state nuclear magnetic resonance quantum computing has not been able to fully implement this functionality, because it requires a switchable inter-qubit coupling that controls the time evolutions of entanglements. Nuclear dipolar coupling is beneficial in that it is present whenever nuclear-spin qubits are close to ...

OPTICAL PROPERTIES OF III-NITRIDE SEMICONDUCTORS AND THE APPLICATIONS IN ALL-OPTICAL SWITCHING By

Optical Properties of Semiconductors

1 Rolf W. Martin, Esslingen University of Applied Sciences, Department of Basic Sciences, Flandernstr. 101, 73732 Esslingen, Germany, [email protected] 2 Otto A. Strobel, Esslingen University of Applied Sciences, Department of Basic Sciences, Flandernstr. 101, 73732 Esslingen, Germany, [email protected] Abstract – A computer based laboratory experiment in the physics lab fo...

Exciton/Charge-Transfer Electronic Couplings in Organic Semiconductors.

Charge transfer (CT) states and excitons are important in energy conversion processes that occur in organic light emitting devices (OLEDS) and organic solar cells. An ab initio density functional theory (DFT) method for obtaining CT-exciton electronic couplings between CT states and excitons is presented. This method is applied to two organic heterodimers to obtain their CT-exciton coupling and...

Broadband sensitive pump-probe setup for ultrafast optical switching of photonic nanostructures and semiconductors.

We describe an ultrafast time resolved pump-probe spectroscopy setup aimed at studying the switching of nanophotonic structures. Both femtosecond pump and probe pulses can be independently tuned over broad frequency range between 3850 and 21,050 cm(-1). A broad pump scan range allows a large optical penetration depth, while a broad probe scan range is crucial to study strongly photonic crystals...