Quantum Optics Seminar: Paul Seidler, IBM Zurich

Bidirectional microwave-optical conversion with a triply resonant barium titanate transducer

Direct electro-optic coupling via the Pockels effect in optical resonators made of non-centrosymmetric materials offers an attractive route to coherent interconversion of microwave and optical photons.  Such devices could enable optical interconnection of quantum computers based on qubits operating at microwave frequencies, providing both networking opportunities and added functionality.  I will present a monolithically integrated, bidirectional, electro-optic transducer comprising barium titanate ridge waveguides and a superconducting microwave circuit.  The triply resonant device achieves an off-chip efficiency of 10-6 and a conversion bandwidth of 16 MHz.