ACQUISITION OF A LOW TEMPERATURE SYSTEM FOR THE STUDY OF NON-ABELIAN TOPOLOGICAL EXCITATIONS
Abstract
I. ABSTRACT Quantum computers are thought to be able to revolutionize cryptography, enable simu- lation of quantum system to streamline new materials development, and solve some other problems unattainable by classical computers. So far large errors in conventional qubit im- plementations render quantum computers impossible. Our parent ONR grant (#N00014-14- 1-0339, managed by Dr. Chagaan Baatar, ONR Electronics, Sensors and Networks Research Division) describes the development of a novel platform where radically new topologically protected qubits (bits of quantum information) for inherently fault-tolerant quantum com- putation may be possible to realize. The goal is to create non-Abelian excitations, long- thought particles with weird exchange statistics where the result of three-particle exchange depends on the order of the exchanges. These particles should be topologically protected from local noise sources and provide that immunity to qubits. Within the rst few months of the grant we performed key feasibility experiments and currently developing devices where non-Abelian excitations can be probed. However, limitations of our equipment will limit experiments to only indirect probing of these particles, while manipulation, detection and non-Abelian statistics demonstration are beyond the capability of the current system. We propose to acquire a customized commercial dilution refrigerator where the required control and detection equipment can be installed, including a number of unique rf components we developed in the past. Incorporation of two low temperature ampli ers for dual-channel rf readout will enable measurements of non-local properties of non-Abelian particles via corre- lation techniques, non-locality being at the heart of the fault tolerance of topological qubits. Installation of multiple high-frequency lines with both rf pulsing and biasing capabilities will enable testing of qubit circuits. The refrigerator will be also retro tted with a vector magnet to study the direction of intrinsic spin-orbital elds. Results obtained using the proposed instrument will signi cantly advance the research program described in the parent ONR grant, and set the stage for the demonstration of non-Abelian matter and development of topologically protected fault-tolerant quantum computer.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 12, 2016
- Source ID
- N000141512831
Entities
People
- Leonid Rokhinson
Organizations
- Office of Naval Research
- United States Navy
- University of Virginia