Scaling Phononic Quantum Networks of Solid-State Spins with Closed Mechanical Subsystems
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2018-11-13 |
| Journal | Physical Review X |
| Authors | Mark C. Kuzyk, Hailin Wang |
| Institutions | University of Oregon |
| Citations | 81 |
Abstract
Section titled āAbstractāPhononic quantum networks feature distinct advantages over photonic networks\nfor on-chip quantum communications, providing a promising platform for\ndeveloping quantum computers with robust solid-state spin qubits. Large\nmechanical networks including one-dimensional chains of trapped ions, however,\nhave inherent and well-known scaling problems. In addition, chiral phononic\nprocesses, which are necessary for conventional phononic quantum networks, are\ndifficult to implement in a solid-state system. To overcome these seemingly\nunsolvable obstacles, we have developed a new network architecture that breaks\na large mechanical network into small and closed mechanical subsystems. This\narchitecture is implemented in a diamond phononic nanostructure featuring\nalternating phononic crystal waveguides with specially-designed bandgaps. The\nimplementation also includes nanomechanical resonators coupled to color centers\nthrough phonon-assisted transitions as well as quantum state transfer protocols\nthat can be robust against the thermal environment.\n