RSS icon
Twitter icon
Facebook icon
Vimeo icon
YouTube icon

Transforming light polarization into matter-spin-qubits and back, using single, semiconductor quantum dots

April 18, 2011 - 12:30pm
Speaker: 
David Gershoni
Institution: 
Solid State Institute

We demonstrate experimentally that light polarization can be directly transformed into the spin of resonantly excited correlated electron hole pairs ('bright' and 'dark' excitons) in semiconductor quantum dots. We show how a polarized picosecond pulse “writes” the exciton’s spin polarization and how a second pulse “reads” it. We also demonstrate manipulation of the spin state from any given point on the surface of its Bloch sphere, to any desired point, using a third, single intermediate pulse.

1201 Physics Building
College Park, MD 20742

Subscribe to A Quantum Bit 

Quantum physics began with revolutionary discoveries in the early twentieth century and continues to be central in today’s physics research. Learn about quantum physics, bit by bit. From definitions to the latest research, this is your portal. Subscribe to receive regular emails from the quantum world. Previous Issues...

Sign Up Now

Sign up to receive A Quantum Bit in your email!

 Have an idea for A Quantum Bit? Submit your suggestions to jqi-comm@umd.edu