Microwave to optical transduction on a chip using ytterbium doped materials
Abstract
The goal of this project is to coherently and reversibly convert microwave signals-from superconducting chips into optical signals., We are aiming for single photon level-efficiencies, thus enabling quantum communication between future superconducting quantum-comp,uters. The conversion process is mediated by an ensemble of 171Yb atoms (or ions) doped-in a YVO4 crystal, coupled simultaneously wi,th high cooperativity to both a superconducting-resonator and an optical resonator. The reason for using 171Yb:YVO is that 171Yb is, the only-Kramers rare-earth ion with a nuclear spin, and thus a simple hyperfine level structure for-coupling to microwave signal,s. This is highly advantageous because it allows for transduction-devices without using large magnetic fields that are not compatibl,e with superconducting qubits.-With support by ONR we already made essential steps towards these goals as following: (i) grew-and ch,aracterized excellent 171Yb:YVO crystals that for this project; (ii) demonstrated proof of-concept transduction (i.e. measurable sig,nals) using on-chip microwave waveguides, optical-waveguides and optical resonators (iii) demonstrated on-chip integration (on YVO4), of photonic-crystal resonators and microwave superconducting resonators with high quality factors.-We propose a three-year research, program with the following aims: (Year 1) Develop high-quality devices integrating optical and superconducting microwave resonators, coupled to-171Yb:YVO; (Year 2) Demonstrate coherent transduction with internal efficiency of a few-percent; (Year 3) Characterize t,he noise of the transduction process, to further increase the-efficiency and achieve a signal to noise ratio that allows transductio,n at single photon level.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 16, 2022
- Source ID
- N000142212422
Entities
People
- Andrei Faraon
Organizations
- California Institute of Technology
- Office of Naval Research
- United States Navy